merge Georgs calendar

23 files changed, 11067 insertions, 0 deletions

diff --git a/apps/calendar/ajax/ajax.php b/apps/calendar/ajax/ajax.php
new file mode 100755
index 00000000000..c3a9486167e
--- /dev/null
+++ b/apps/calendar/ajax/ajax.php
@@ -0,0 +1,25 @@
+<?php
+require_once("../libs/sanitize.php");
+require_once ("../../../lib/base.php");
+if( !OC_USER::isLoggedIn()){
+	die("nosession");
+}
+if(sanitize_paranoid_string($_GET["task"]) == "load_events"){
+	echo "parsing_fail";
+	exit;
+}elseif(sanitize_paranoid_string($_GET["task"]) == "edit_event"){
+	echo "edit_event";
+	exit;
+}elseif(sanitize_paranoid_string($_GET["task"]) == "new_event"){
+	echo "new_event";
+	exit;
+}elseif(sanitize_paranoid_string($_GET["task"]) == "edit_settings"){
+	echo "edit_settings";
+	exit;
+}elseif(sanitize_paranoid_string($_GET["task"]) == "choose_calendar"){
+	echo "choose_calendar";
+	exit;
+}else{
+	die("unknown task");
+}
+?>
\ No newline at end of file
diff --git a/apps/calendar/appinfo/app.php b/apps/calendar/appinfo/app.php
new file mode 100644
index 00000000000..8cf92baf30a
--- /dev/null
+++ b/apps/calendar/appinfo/app.php
@@ -0,0 +1,18 @@
+<?php
+
+OC::$CLASSPATH['OC_Calendat_Calendar'] = 'apps/calendar/lib/calendar.php';
+OC::$CLASSPATH['OC_Calendar_Hooks'] = 'apps/calendar/lib/hooks.php';
+OC::$CLASSPATH['OC_Connector_Sabre_CalDAV'] = 'apps/calendar/lib/connector_sabre.php';
+OC_HOOK::connect('OC_User', 'post_createUser', 'OC_Calendar_Hooks', 'deleteUser');
+
+OC_App::register( array( 
+  'order' => 10,
+  'id' => 'calendar',
+  'name' => 'Calendar' ));
+
+OC_App::addNavigationEntry( array( 
+  'id' => 'calendar_index',
+  'order' => 10,
+  'href' => OC_Helper::linkTo( 'calendar', 'index.php' ),
+  'icon' => OC_Helper::imagePath( 'calendar', 'icon.png' ),
+  'name' => 'Calendar' ));
diff --git a/apps/calendar/appinfo/database.xml b/apps/calendar/appinfo/database.xml
new file mode 100644
index 00000000000..36fd56a0516
--- /dev/null
+++ b/apps/calendar/appinfo/database.xml
@@ -0,0 +1,189 @@
+<?xml version="1.0" encoding="ISO-8859-1" ?>
+<database>
+
+ <name>*dbname*</name>
+ <create>true</create>
+ <overwrite>false</overwrite>
+
+ <charset>utf8</charset>
+
+ <table>
+
+  <name>*dbprefix*calendar_objects</name>
+
+  <declaration>
+
+   <field>
+    <name>id</name>
+    <type>integer</type>
+    <default>0</default>
+    <notnull>true</notnull>
+    <autoincrement>1</autoincrement>
+    <unsigned>true</unsigned>
+    <length>4</length>
+   </field>
+
+   <field>
+    <name>calendarid</name>
+    <type>integer</type>
+    <default></default>
+    <notnull>true</notnull>
+    <unsigned>true</unsigned>
+    <length>4</length>
+   </field>
+
+   <field>
+    <name>objecttype</name>
+    <type>text</type>
+    <default></default>
+    <notnull>true</notnull>
+    <length>40</length>
+   </field>
+
+   <field>
+    <name>startdate</name>
+    <type>timestamp</type>
+    <default>0000-00-00 00:00:00</default>
+    <notnull>false</notnull>
+   </field>
+
+   <field>
+    <name>enddate</name>
+    <type>timestamp</type>
+    <default>0000-00-00 00:00:00</default>
+    <notnull>false</notnull>
+   </field>
+
+   <field>
+    <name>repeating</name>
+    <type>integer</type>
+    <default></default>
+    <notnull>false</notnull>
+    <length>4</length>
+   </field>
+
+   <field>
+    <name>summary</name>
+    <type>text</type>
+    <default></default>
+    <notnull>false</notnull>
+    <length>255</length>
+   </field>
+
+   <field>
+    <name>calendardata</name>
+    <type>clob</type>
+    <notnull>false</notnull>
+   </field>
+
+   <field>
+    <name>uri</name>
+    <type>text</type>
+    <default></default>
+    <notnull>false</notnull>
+    <length>100</length>
+   </field>
+
+   <field>
+    <name>lastmodified</name>
+    <type>integer</type>
+    <default></default>
+    <notnull>false</notnull>
+    <length>4</length>
+   </field>
+
+  </declaration>
+
+ </table>
+
+ <table>
+
+  <name>*dbprefix*calendar_calendars</name>
+
+  <declaration>
+
+   <field>
+    <name>id</name>
+    <type>integer</type>
+    <default>0</default>
+    <notnull>true</notnull>
+    <autoincrement>1</autoincrement>
+    <unsigned>true</unsigned>
+    <length>4</length>
+   </field>
+
+   <field>
+    <name>userid</name>
+    <type>text</type>
+    <default></default>
+    <notnull>false</notnull>
+    <length>255</length>
+   </field>
+
+   <field>
+    <name>displayname</name>
+    <type>text</type>
+    <default></default>
+    <notnull>false</notnull>
+    <length>100</length>
+   </field>
+
+   <field>
+    <name>uri</name>
+    <type>text</type>
+    <default></default>
+    <notnull>false</notnull>
+    <length>100</length>
+   </field>
+
+   <field>
+    <name>ctag</name>
+    <type>integer</type>
+    <default>0</default>
+    <notnull>true</notnull>
+    <unsigned>true</unsigned>
+    <length>4</length>
+   </field>
+
+   <field>
+    <name>description</name>
+    <type>clob</type>
+    <notnull>false</notnull>
+   </field>
+
+   <field>
+    <name>calendarorder</name>
+    <type>integer</type>
+    <default>0</default>
+    <notnull>true</notnull>
+    <unsigned>true</unsigned>
+    <length>4</length>
+   </field>
+
+   <field>
+    <name>calendarcolor</name>
+    <type>text</type>
+    <default></default>
+    <notnull>false</notnull>
+    <length>10</length>
+   </field>
+
+   <field>
+    <name>timezone</name>
+    <type>clob</type>
+    <notnull>false</notnull>
+   </field>
+
+   <field>
+    <name>components</name>
+    <type>text</type>
+    <default></default>
+    <notnull>false</notnull>
+    <length>20</length>
+   </field>
+
+  </declaration>
+
+ </table>
+
+</database>
diff --git a/apps/calendar/appinfo/info.xml b/apps/calendar/appinfo/info.xml
new file mode 100644
index 00000000000..4cb6b0dd3f5
--- /dev/null
+++ b/apps/calendar/appinfo/info.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0"?> 
+<info>
+	<id>calendar</id>
+	<name>Calendar</name>
+	<version>0.1</version>
+	<licence>AGPL</licence>
+	<author>Jakob Sack</author>
+	<require>2</require>
+	<description>CalDAV server with viewing support.</description>
+</info>
diff --git a/apps/calendar/caldav.php b/apps/calendar/caldav.php
new file mode 100644
index 00000000000..da56919a528
--- /dev/null
+++ b/apps/calendar/caldav.php
@@ -0,0 +1,48 @@
+<?php
+/**
+ * ownCloud - Addressbook
+ *
+ * @author Jakob Sack
+ * @copyright 2011 Jakob Sack mail@jakobsack.de
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+// Do not load FS ...
+$RUNTIME_NOSETUPFS = true;
+
+require_once('../../lib/base.php');
+
+// Backends
+$authBackend = new OC_Connector_Sabre_Auth();
+$principalBackend = new OC_Connector_Sabre_Principal();
+$caldavBackend    = new OC_Connector_Sabre_CalDAV();
+
+// Root nodes
+$nodes = array(
+	new Sabre_DAVACL_PrincipalCollection($principalBackend),
+	new Sabre_CalDAV_CalendarRootNode($principalBackend, $caldavBackend),
+);
+
+// Fire up server
+$server = new Sabre_DAV_Server($nodes);
+$server->setBaseUri($WEBROOT.'/apps/calendar/caldav.php');
+// Add plugins
+$server->addPlugin(new Sabre_DAV_Auth_Plugin($authBackend,'ownCloud'));
+$server->addPlugin(new Sabre_CalDAV_Plugin());
+$server->addPlugin(new Sabre_DAVACL_Plugin());
+
+// And off we go!
+$server->exec();
diff --git a/apps/calendar/cfg/root.cfg.php b/apps/calendar/cfg/root.cfg.php
new file mode 100755
index 00000000000..855c9631c7f
--- /dev/null
+++ b/apps/calendar/cfg/root.cfg.php
@@ -0,0 +1,7 @@
+<?php
+$defaultview = "onemonthview";
+$calendar = array("files/calendar_app/private.ics", "files/calendar_app/german_hol.ics","files/calendar_app/christ_hol.ics");
+$calendar_name = array("files/calendar_app/private.ics"=>"Privater Kalender", "files/calendar_app/german_hol.ics"=>"Deutsche Feiertage", "files/calendar_app/christ_hol.ics"=>"Christliche Feiertage");
+$calendar_status = array("files/calendar_app/private.ics"=>"enabled", "files/calendar_app/german_hol.ics"=>"disabled", "files/calendar_app/christ_hol.ics"=>"enabled");
+$default_timezone;
+?>
\ No newline at end of file
diff --git a/apps/calendar/css/style.css b/apps/calendar/css/style.css
new file mode 100755
index 00000000000..f74c47eb396
--- /dev/null
+++ b/apps/calendar/css/style.css
@@ -0,0 +1,171 @@
+/*************************************************
+ * ownCloud - Calendar Plugin                     *
+ *                                                *
+ * (c) Copyright 2011 Georg Ehrke                 *
+ * author: Georg Ehrke                            *
+ * email: ownclouddev at georgswebsite dot de     *
+ * homepage: ownclouddev.georgswebsite.de         *
+ * manual: ownclouddev.georgswebsite.de/manual    *
+ * License: GNU General Public License (GPL)      *
+ *                                                *
+ * <http://www.gnu.org/licenses/>                 *
+ * If you are not able to view the License,       *
+ * <http://www.gnu.org/licenses/>                 *
+ * <http://ownclouddev.georgswebsite.de/license/> *
+ * please write to the Free Software Foundation.  *
+ * Address:                                       *
+ * 59 Temple Place, Suite 330, Boston,            *
+ * MA 02111-1307  USA                             *
+ **************************************************
+ *                   list of IDs                  *
+ * calendar_container - contains all calendar     *
+ * choosecalendar - choose Calender holder        *
+ * choosecalendar_dialog - Dialog to choose cal.  *
+ * newentry_dialog - Dialog for creating an event *
+ * editentry_dialog - Dialog for editing an event *
+ * view - container for view chooser              *
+ * datecontrol - Date in the top middle           *
+ * datecontrol_label - label for datecontrol      *
+ * onedayview - view for one day                  *
+ * oneweekview - view for one week                *
+ * fourweeksview - view for four weeks            *
+ * onemonthview - view for one month              *
+ *                 list of classes                *
+ * actions - owncloud native class                *
+ * center - centering an element                  *
+ * control - owncloud native class                *
+ * dateinfo - date in four weeks and month view   *
+ * calender_row - normal calender row             *
+ * calender_time - calender row for time          *
+ * fourweeksview_item - item in fourweeksview     *
+ * onemonthview_item - item in onemonthview       *
+ *************************************************/
+#calendar_container {
+	position: absolute;
+	top: 150px;
+	bottom: 10px;
+	left: 230px;
+	right: 100px;
+}
+#choosecalendar {
+	margin-right: 10px;
+	float: right;
+}
+#choosecalendar_dialog {
+	display: none;
+}
+#newentry_dialog {
+	display: none;
+}
+#editentry_dialog {
+	display: none;
+}
+#parsingfail_dialog{
+	display: none;
+}
+#view {
+	margin-left: 10px;
+	float: left;
+}
+#datecontrol {
+	text-align: center;
+}
+#datecontrol_date_label {
+	margin: 0;
+	padding: 0;
+}
+#onedayview, #oneweekview, #fourweeksview, #onemonthview, #listview {
+	display: none;
+}
+#onedayview table {
+	margin: 0;
+	padding: 0;
+	width: 100%;
+}
+#oneweekview table {
+	margin: 0;
+	padding: 0;
+	width: 100%;
+}
+#fourweeksview table {
+	margin: 0;
+	padding: 0;
+	width: 100%;
+}
+#onemonthview table {
+	margin: 0;
+	padding: 0;
+	width: 100%;
+}
+#fourweeksview_calw1, #fourweeksview_calw2, #fourweeksview_calw3, #fourweeksview_calw4{
+	vertical-align: middle;
+	text-align: center;
+	width: 50px;
+}
+#devbox {
+	position: absolute;
+	top: 0;
+	left: 300px;
+	right: 300px;
+	text-align: center;
+	height: 50px;
+}
+.actions {
+	height: 33px;
+	min-width: 800px;
+}
+.controls {
+	min-width: 800px;
+}
+.center {
+	text-align: center;
+}
+.dateinfo {
+	height: 15px;
+	width: 100%;
+	overflow: hidden;
+	margin: 0;
+	padding: 0;
+	font-size: 12px;
+}
+.events {
+	height: 65px;
+	width: 100%;
+	margin: 0;
+	padding: 0;
+}
+.calendar_row {
+	height: 20px;
+	text-align: center;
+}
+.calendar_time {
+	height: 20px;
+	width: 50px;
+	text-align:right;
+}
+.fourweeksview_item {
+	text-align: center;
+	height: 80px;
+}
+.onemonthview_item {
+	text-align: center;
+	height: 80px;
+	margin: 0;
+	padding: 0;
+	vertical-align: top;
+}
+.weekend{
+	text-align: center;
+	height: 80px;
+	margin: 0;
+	padding: 0;
+	vertical-align: top;
+	background: #F3F3F3;
+}
+
+.weekend_thead, .weekend_row{
+	height: 20px;
+	text-align: center;
+	text-align: center;
+	background: #F3F3F3;
+}
\ No newline at end of file
diff --git a/apps/calendar/img/icon.png b/apps/calendar/img/icon.png
new file mode 100755
index 00000000000..ee0249b2c9b
--- /dev/null
+++ b/apps/calendar/img/icon.png
diff --git a/apps/calendar/index.php b/apps/calendar/index.php
new file mode 100755
index 00000000000..ee00b0280b2
--- /dev/null
+++ b/apps/calendar/index.php
@@ -0,0 +1,36 @@
+<?php
+/*************************************************
+ * ownCloud - Calendar Plugin                     *
+ *                                                *
+ * (c) Copyright 2011 Georg Ehrke                 *
+ * author: Georg Ehrke                            *
+ * email: ownclouddev at georgswebsite dot de     *
+ * homepage: ownclouddev.georgswebsite.de         *
+ * manual: ownclouddev.georgswebsite.de/manual    *
+ * License: GNU General Public License (GPL)      *
+ *                                                *
+ * If you are not able to view the License,       *
+ * <http://www.gnu.org/licenses/>                 *
+ * <http://ownclouddev.georgswebsite.de/license/> *
+ * please write to the Free Software Foundation.  *
+ * Address:                                       *
+ * 59 Temple Place, Suite 330, Boston,            *
+ * MA 02111-1307  USA                             *
+ *************************************************/
+require_once ("../../lib/base.php");
+if(!OC_USER::isLoggedIn()) {
+	header("Location: " . OC_HELPER::linkTo("", "index.php"));
+	exit ;
+}
+if(!file_exists("cfg/" . OC_USER::getUser() . ".cfg.php")) {
+	header("Location: install.php");
+}
+OC_UTIL::addScript("calendar", "calendar");
+OC_UTIL::addScript("calendar", "calendar_init");
+OC_UTIL::addScript("calendar", "calendar_dialog");
+OC_UTIL::addStyle("calendar", "style");
+require_once ("libs/iCalcreator.php");
+require_once ("libs/oc_calendar.php");
+OC_APP::setActiveNavigationEntry("calendar_index");
+$output = new OC_TEMPLATE("calendar", "calendar", "user");
+$output -> printpage();
diff --git a/apps/calendar/install.php b/apps/calendar/install.php
new file mode 100755
index 00000000000..cef1096871a
--- /dev/null
+++ b/apps/calendar/install.php
@@ -0,0 +1,35 @@
+<?php
+/*************************************************
+ * ownCloud - Calendar Plugin                     *
+ *                                                *
+ * (c) Copyright 2011 Georg Ehrke                 *
+ * author: Georg Ehrke                            *
+ * email: ownclouddev at georgswebsite dot de     *
+ * homepage: ownclouddev.georgswebsite.de         *
+ * manual: ownclouddev.georgswebsite.de/manual    *
+ * License: GNU General Public License (GPL)      *
+ *                                                *
+ * If you are not able to view the License,       *
+ * <http://www.gnu.org/licenses/>                 *
+ * <http://ownclouddev.georgswebsite.de/license/> *
+ * please write to the Free Software Foundation.  *
+ * Address:                                       *
+ * 59 Temple Place, Suite 330, Boston,            *
+ * MA 02111-1307  USA                             *
+ *************************************************/
+require_once ("../../lib/base.php");
+if(!OC_USER::isLoggedIn()) {
+	header("Location: " . OC_HELPER::linkTo("index.php"));
+	exit();
+}
+if(!file_exists("cfg/" . OC_USER::getUser() . ".cfg.php")) {
+	header("Location: install.php");
+}
+OC_UTIL::addScript("calendar", "calendar");
+OC_UTIL::addScript("calendar", "calendar_init");
+OC_UTIL::addStyle("calendar", "style");
+require_once ("template.php");
+OC_APP::setActiveNavigationEntry("calendar_settings");
+$output = new OC_TEMPLATE("calendar", "settings", "admin");
+$output -> printpage();
+?>
\ No newline at end of file
diff --git a/apps/calendar/js/calendar.js b/apps/calendar/js/calendar.js
new file mode 100755
index 00000000000..d8b1fece2d6
--- /dev/null
+++ b/apps/calendar/js/calendar.js
@@ -0,0 +1,890 @@
+/*************************************************
+ * ownCloud - Calendar Plugin                     *
+ *                                                *
+ * (c) Copyright 2011 Georg Ehrke                 *
+ * author: Georg Ehrke                            *
+ * email: ownclouddev at georgswebsite dot de     *
+ * homepage: ownclouddev.georgswebsite.de         *
+ * manual: ownclouddev.georgswebsite.de/manual    *
+ * License: GNU General Public License (GPL)      *
+ *                                                *
+ * If you are not able to view the License,       *
+ * <http://www.gnu.org/licenses/>                 *
+ * <http://ownclouddev.georgswebsite.de/license/> *
+ * please write to the Free Software Foundation.  *
+ * Address:                                       *
+ * 59 Temple Place, Suite 330, Boston,            *
+ * MA 02111-1307  USA                             *
+ **************************************************
+ *               list of all fx                   *
+ * calw - Calendarweek                            *
+ * doy - Day of the year                          *
+ * checkforleapyear - check for a leap year       *
+ * update_view - update the view of the calendar  *
+ * onedayview - one day view                      *
+ * oneweekview - one week view                    *
+ * onemonthview - four Weeks view                 *
+ * onemonthview - one Month view                  *
+ * listview - listview                            *
+ * forward_day - switching one day forward        *
+ * forward_week - switching one week forward      *
+ * forward_month - switching one month forward    *
+ * backward_day - switching one day backward      *
+ * backward_week - switching one week backward    *
+ * backward_month - switching one month backward  *
+ * generate_monthview - generating month view     *
+ * generate_dates - generate other days for view  *
+ * load_events - load the events                  *
+ * switch2today - switching to today              *
+ * remove_events - remove old events in view      *
+ *************************************************/
+function calw() {
+	var generate_dayofweek = dayofweek;
+	if(generate_dayofweek == 0) {
+		generate_dayofweek = 7;
+	}
+	var calw = Math.floor((doy() - generate_dayofweek) / 7) + 1;
+	return calw;
+}
+
+function doy() {
+	if(checkforleapyear(year) == true) {
+		var cal = leap_cal;
+	} else {
+		var cal = normal_cal;
+	}
+	var doy = 0;
+	for(var i = 0; i < month; i++) {
+		doy = parseInt(doy) + parseInt(cal[i]);
+	}
+	doy = parseInt(doy) + dayofmonth;
+	return doy;
+}
+
+function checkforleapyear(year2check) {
+	if((year2check / 600) == Math.floor(year2check / 400)) {
+		return true;
+	}
+	if((year2check / 4) == Math.floor(year2check / 4)) {
+		if((year2check / 100) == Math.floor(year2check / 100)) {
+			return false;
+		}
+		return true;
+	}
+	return false;
+}
+
+function update_view(view, task) {
+	if(view == "") {
+		view = currentview;
+	}
+	switch(view) {
+		case "onedayview":
+			if(task == "forward") {
+				forward_day();
+			}
+			if(task == "backward") {
+				backward_day();
+			}
+			remove_events("oneday");
+			load_cal("oneday");
+			load_events("oneday");
+			break;
+		case "oneweekview":
+			if(task == "forward") {
+				forward_week();
+			}
+			if(task == "backward") {
+				backward_week();
+			}
+			remove_events("oneweek");
+			load_cal("oneweek");
+			load_events("oneweek");
+			break;
+		case "fourweeksview":
+			if(task == "forward") {
+				forward_week();
+			}
+			if(task == "backward") {
+				backward_week();
+			}
+			remove_events("fourweeks");
+			load_cal("fourweeks");
+			load_events("fourweeks");
+			break;
+		case "onemonthview":
+			if(task == "forward") {
+				forward_month();
+			}
+			if(task == "backward") {
+				backward_month();
+			}
+			remove_events("onemonth");
+			load_cal("onemonth");
+			load_events("onemonth");
+			break;
+		case "listview":
+			if(task == "forward") {
+				forward_day();
+			}
+			if(task == "backward") {
+				backward_day();
+			}
+			remove_events("list");
+			load_cal("list");
+			load_events("list");
+			break;
+		default:
+			return false;
+	}
+}
+
+function listview(task) {
+	if(task == "forward") {
+		forward_day();
+	}
+	if(task == "backward") {
+		backward_day();
+	}
+	document.getElementById("datecontrol_date_label").innerHTML = dayshort[dayofweek] + space + dayofmonth + space + monthshort[month] + space + year;
+}
+
+function forward_day() {
+	if(checkforleapyear(year) == true) {
+		var cal = leap_cal;
+	} else {
+		var cal = normal_cal;
+	}
+	if(dayofmonth == cal[month]) {
+		if(month == 11) {
+			date.setFullYear(year++, month = 0, dayofmonth = 1);
+			if(dayofweek == 6) {
+				dayofweek = 0;
+			} else {
+				dayofweek++;
+			}
+		} else {
+			date.setMonth(month++, dayofmonth = 1);
+			if(dayofweek == 6) {
+				dayofweek = 0;
+			} else {
+				dayofweek++;
+			}
+		}
+	} else {
+		date.setDate(dayofmonth++);
+		if(dayofweek == 6) {
+			dayofweek = 0;
+		} else {
+			dayofweek++;
+		}
+	}
+	if(month == 11) {
+		update_eventsvar(year + 1);
+	}
+}
+
+function forward_week() {
+	for(var i = 1; i <= 7; i++) {
+		forward_day();
+	}
+}
+
+function forward_month() {
+	if(checkforleapyear(year) == true) {
+		var cal = leap_cal;
+	} else {
+		var cal = normal_cal;
+	}
+	for(var i = 1; i <= cal[month]; i++) {
+		forward_day();
+	}
+}
+
+function backward_day() {
+	if(checkforleapyear(year) == true) {
+		var cal = leap_cal;
+	} else {
+		var cal = normal_cal;
+	}
+	if(dayofmonth == 1) {
+		if(month == 0) {
+			date.setFullYear(year--, month = 11, dayofmonth = 31);
+			if(dayofweek == 0) {
+				dayofweek = 6;
+			} else {
+				dayofweek--;
+			}
+		} else {
+			date.setMonth(month--, dayofmonth = cal[month]);
+			if(dayofweek == 0) {
+				dayofweek = 6;
+			} else {
+				dayofweek--;
+			}
+		}
+	} else {
+		date.setDate(dayofmonth--);
+		if(dayofweek == 0) {
+			dayofweek = 6;
+		} else {
+			dayofweek--;
+		}
+	}
+	if(month == 0) {
+		update_eventsvar( year - 1);
+	}
+}
+
+function backward_week() {
+	for(var i = 1; i <= 7; i++) {
+		backward_day();
+	}
+}
+
+function backward_month() {
+	if(checkforleapyear(year) == true) {
+		var cal = leap_cal;
+	} else {
+		var cal = normal_cal;
+	}
+	for(var i = cal[month]; i >= 1; i--) {
+		backward_day();
+	}
+}
+
+function generate_dates(view) {
+	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	if(view == "oneweek") {
+		var generate_dayofweek = dayofweek;
+		var generate_dayofmonth = dayofmonth;
+		var generate_month = month;
+		var generate_year = year;
+		var dates = new Array();
+		if(generate_dayofweek == 0) {
+			generate_dayofweek = 7;
+		}
+		for(var i = generate_dayofweek; i > 1; i--) {
+			if(checkforleapyear(generate_year) == true) {
+				var cal = leap_cal;
+			} else {
+				var cal = normal_cal;
+			}
+			if(generate_dayofmonth == 1) {
+				if(generate_month == 0) {
+					generate_year--;
+					generate_month = 11;
+					generate_dayofmonth = cal[generate_month];
+				} else {
+					generate_month--;
+					generate_dayofmonth = cal[generate_month];
+				}
+			} else {
+				generate_dayofmonth--;
+			}
+			generate_dayofweek--;
+		}
+		dates[0] = new Array(generate_dayofmonth, generate_month, generate_year);
+		for(var i = 1; i <= 6; i++) {
+			if(checkforleapyear(generate_year) == true) {
+				var cal = leap_cal;
+			} else {
+				var cal = normal_cal;
+			}
+			if(generate_dayofmonth == cal[generate_month]) {
+				if(generate_month == 11) {
+					generate_year++;
+					generate_month = 0;
+					generate_dayofmonth = 1;
+				} else {
+					generate_month++;
+					generate_dayofmonth = 1;
+				}
+			} else {
+				generate_dayofmonth++;
+			}
+			dates[i] = new Array(generate_dayofmonth, generate_month, generate_year);
+		}
+		return dates;
+	}
+	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	if(view == "fourweeks") {
+		var generate_dayofweek = dayofweek;
+		var generate_dayofmonth = dayofmonth;
+		var generate_month = month;
+		var generate_year = year;
+		var dates = new Array();
+		if(generate_dayofweek == 0) {
+			generate_dayofweek = 7;
+		}
+		for(var i = generate_dayofweek; i > 1; i--) {
+			if(checkforleapyear(generate_year) == true) {
+				var cal = leap_cal;
+			} else {
+				var cal = normal_cal;
+			}
+			if(generate_dayofmonth == 1) {
+				if(generate_month == 0) {
+					generate_year--;
+					generate_month = 11;
+					generate_dayofmonth = cal[generate_month];
+				} else {
+					generate_month--;
+					generate_dayofmonth = cal[generate_month];
+				}
+			} else {
+				generate_dayofmonth--;
+			}
+			generate_dayofweek--;
+		}
+		dates[0] = new Array(generate_dayofmonth, generate_month, generate_year);
+		for(var i = 1; i <= 27; i++) {
+			if(checkforleapyear(generate_year) == true) {
+				var cal = leap_cal;
+			} else {
+				var cal = normal_cal;
+			}
+			if(generate_dayofmonth == cal[generate_month]) {
+				if(generate_month == 11) {
+					generate_year++;
+					generate_month = 0;
+					generate_dayofmonth = 1;
+				} else {
+					generate_month++;
+					generate_dayofmonth = 1;
+				}
+			} else {
+				generate_dayofmonth++;
+			}
+			dates[i] = new Array(generate_dayofmonth, generate_month, generate_year);
+		}
+		return dates;
+	}
+	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	if(view == "onemonth") {
+		var generate_dayofweek = dayofweek;
+		var generate_dayofmonth = dayofmonth;
+		var generate_month = month;
+		var generate_year = year;
+		var dates = new Array();
+		for(var i = generate_dayofmonth; i > 1; i--) {
+			if(checkforleapyear(generate_year) == true) {
+				var cal = leap_cal;
+			} else {
+				var cal = normal_cal;
+			}
+			if(generate_dayofmonth == 1) {
+				if(generate_month == 0) {
+					generate_year--;
+					generate_month = 11;
+					generate_dayofmonth = cal[generate_month];
+				} else {
+					generate_month--;
+					generate_dayofmonth = cal[generate_month];
+				}
+			} else {
+				generate_dayofmonth--;
+			}
+			if(generate_dayofweek == 0) {
+				generate_dayofweek = 6;
+			} else {
+				generate_dayofweek--;
+			}
+		}
+		if(generate_dayofweek == 0) {
+			generate_dayofweek = 7;
+			rows++;
+		}
+		for(var i = generate_dayofweek; i > 1; i--) {
+			if(checkforleapyear(generate_year) == true) {
+				var cal = leap_cal;
+			} else {
+				var cal = normal_cal;
+			}
+			if(generate_dayofmonth == 1) {
+				if(generate_month == 0) {
+					generate_year--;
+					generate_month = 11;
+					generate_dayofmonth = cal[generate_month];
+				} else {
+					generate_month--;
+					generate_dayofmonth = cal[generate_month];
+				}
+			} else {
+				generate_dayofmonth--;
+			}
+			generate_dayofweek--;
+		}
+		dates[0] = new Array(generate_dayofmonth, generate_month, generate_year);
+		for(var i = 1; i <= 41; i++) {
+			if(checkforleapyear(generate_year) == true) {
+				var cal = leap_cal;
+			} else {
+				var cal = normal_cal;
+			}
+			if(generate_dayofmonth == cal[generate_month]) {
+				if(generate_month == 11) {
+					generate_year++;
+					generate_month = 0;
+					generate_dayofmonth = 1;
+				} else {
+					generate_month++;
+					generate_dayofmonth = 1;
+				}
+			} else {
+				generate_dayofmonth++;
+			}
+			dates[i] = new Array(generate_dayofmonth, generate_month, generate_year);
+		}
+		return dates;
+	} else {////////////////////////////////////////////////////////////////////////////////////////////////////
+		return false;
+	}
+}
+
+function switch2today() {
+	date = today;
+	dayofweek = todaydayofweek;
+	month = todaymonth;
+	dayofmonth = todaydayofmonth;
+	year = todayyear;
+	update_view('', '');
+}
+
+function load_events(view, date) {
+
+}
+
+function update_eventsvar(loadyear) {
+	$("#js_events").load(oc_webroot + "/apps/calendar/ajax/ajax.php?task=load_events&year=" + loadyear);
+	if(document.getElementById("js_events").innerHTML == "nosession") {
+		alert("You are not logged in. That can happen if you don't use owncloud for a long time.");
+		document.location(oc_webroot);
+	}
+	if(document.getElementById("js_events").innerHTML == "parsingfail" || typeof (newevents) == "undefined") {
+		$(function() {
+			$( "#parsingfail_dialog" ).dialog();
+		});
+	} else {
+		events.concat(newevents);
+	}
+}
+
+function load_cal(loadview) {
+	if(loadview == "oneday") {
+		document.getElementById("datecontrol_date_label").innerHTML = dayshort[dayofweek] + space + dayofmonth + space + monthshort[month] + space + year;
+		document.getElementById("onedayview_today").innerHTML = daylong[dayofweek] + space + dayofmonth + space + monthshort[month];
+	}
+	if(loadview == "oneweek") {
+		document.getElementById("datecontrol_date_label").innerHTML = "CW: " + calw();
+		var dates = generate_dates("oneweek");
+		document.getElementById("oneweekview_monday").innerHTML = dayshort[1] + space + dates[0][0] + space + monthshort[dates[0][1]];
+		document.getElementById("oneweekview_tuesday").innerHTML = dayshort[2] + space + dates[1][0] + space + monthshort[dates[1][1]];
+		document.getElementById("oneweekview_wednesday").innerHTML = dayshort[3] + space + dates[2][0] + space + monthshort[dates[2][1]];
+		document.getElementById("oneweekview_thursday").innerHTML = dayshort[4] + space + dates[3][0] + space + monthshort[dates[3][1]];
+		document.getElementById("oneweekview_friday").innerHTML = dayshort[5] + space + dates[4][0] + space + monthshort[dates[4][1]];
+		document.getElementById("oneweekview_saturday").innerHTML = dayshort[6] + space + dates[5][0] + space + monthshort[dates[5][1]];
+		document.getElementById("oneweekview_sunday").innerHTML = dayshort[0] + space + dates[6][0] + space + monthshort[dates[6][1]];
+	}
+	if(loadview == "fourweeks") {
+		var calw1 = calw();
+		if(calw1 == 52) { //////////////////////////////// !!!! OPTIMIEREN  !!!! ///////////////////////////////////////////////////////////
+			var calw2 = 1;
+		} else {
+			var calw2 = calw() + 1;
+		}
+		if(calw1 == 51) {
+			var calw3 = 1;
+		} else if(calw1 == 52) {
+			var calw3 = 2;
+		} else {
+			var calw3 = calw() + 2;
+		}
+		if(calw1 == 50) {
+			var calw4 = 1;
+		} else if(calw1 == 51) {
+			var calw4 = 2;
+		} else if(calw1 == 52) {
+			var calw4 = 3;
+		} else {
+			var calw4 = calw() + 3;
+		}
+		var calwplusfour = calw4;
+		var dates = generate_dates("fourweeks");
+		document.getElementById("dateinfo_fourweeksview_monday_1").innerHTML = dates[0][0] + space + monthshort[dates[0][1]];
+		document.getElementById("dateinfo_fourweeksview_tuesday_1").innerHTML = dates[1][0] + space + monthshort[dates[1][1]];
+		document.getElementById("dateinfo_fourweeksview_wednesday_1").innerHTML = dates[2][0] + space + monthshort[dates[2][1]];
+		document.getElementById("dateinfo_fourweeksview_thursday_1").innerHTML = dates[3][0] + space + monthshort[dates[3][1]];
+		document.getElementById("dateinfo_fourweeksview_friday_1").innerHTML = dates[4][0] + space + monthshort[dates[4][1]];
+		document.getElementById("dateinfo_fourweeksview_saturday_1").innerHTML = dates[5][0] + space + monthshort[dates[5][1]];
+		document.getElementById("dateinfo_fourweeksview_sunday_1").innerHTML = dates[6][0] + space + monthshort[dates[6][1]];
+		document.getElementById("dateinfo_fourweeksview_monday_2").innerHTML = dates[7][0] + space + monthshort[dates[7][1]];
+		document.getElementById("dateinfo_fourweeksview_tuesday_2").innerHTML = dates[8][0] + space + monthshort[dates[8][1]];
+		document.getElementById("dateinfo_fourweeksview_wednesday_2").innerHTML = dates[9][0] + space + monthshort[dates[9][1]];
+		document.getElementById("dateinfo_fourweeksview_thursday_2").innerHTML = dates[10][0] + space + monthshort[dates[10][1]];
+		document.getElementById("dateinfo_fourweeksview_friday_2").innerHTML = dates[11][0] + space + monthshort[dates[11][1]];
+		document.getElementById("dateinfo_fourweeksview_saturday_2").innerHTML = dates[12][0] + space + monthshort[dates[12][1]];
+		document.getElementById("dateinfo_fourweeksview_sunday_2").innerHTML = dates[13][0] + space + monthshort[dates[13][1]];
+		document.getElementById("dateinfo_fourweeksview_monday_3").innerHTML = dates[14][0] + space + monthshort[dates[14][1]];
+		document.getElementById("dateinfo_fourweeksview_tuesday_3").innerHTML = dates[15][0] + space + monthshort[dates[15][1]];
+		document.getElementById("dateinfo_fourweeksview_wednesday_3").innerHTML = dates[16][0] + space + monthshort[dates[16][1]];
+		document.getElementById("dateinfo_fourweeksview_thursday_3").innerHTML = dates[17][0] + space + monthshort[dates[17][1]];
+		document.getElementById("dateinfo_fourweeksview_friday_3").innerHTML = dates[18][0] + space + monthshort[dates[18][1]];
+		document.getElementById("dateinfo_fourweeksview_saturday_3").innerHTML = dates[19][0] + space + monthshort[dates[19][1]];
+		document.getElementById("dateinfo_fourweeksview_sunday_3").innerHTML = dates[20][0] + space + monthshort[dates[20][1]];
+		document.getElementById("dateinfo_fourweeksview_monday_4").innerHTML = dates[21][0] + space + monthshort[dates[21][1]];
+		document.getElementById("dateinfo_fourweeksview_tuesday_4").innerHTML = dates[22][0] + space + monthshort[dates[22][1]];
+		document.getElementById("dateinfo_fourweeksview_wednesday_4").innerHTML = dates[23][0] + space + monthshort[dates[23][1]];
+		document.getElementById("dateinfo_fourweeksview_thursday_4").innerHTML = dates[24][0] + space + monthshort[dates[24][1]];
+		document.getElementById("dateinfo_fourweeksview_friday_4").innerHTML = dates[25][0] + space + monthshort[dates[25][1]];
+		document.getElementById("dateinfo_fourweeksview_saturday_4").innerHTML = dates[26][0] + space + monthshort[dates[26][1]];
+		document.getElementById("dateinfo_fourweeksview_sunday_4").innerHTML = dates[27][0] + space + monthshort[dates[27][1]];
+		document.getElementById("fourweeksview_calw1").innerHTML = calw1;
+		document.getElementById("fourweeksview_calw2").innerHTML = calw2;
+		document.getElementById("fourweeksview_calw3").innerHTML = calw3;
+		document.getElementById("fourweeksview_calw4").innerHTML = calw4;
+		document.getElementById("datecontrol_date_label").innerHTML = "CWs: " + calw() + " - " + calwplusfour;
+	}
+	if(loadview == "onemonth") {
+		document.getElementById("datecontrol_date_label").innerHTML = monthlong[month] + space + year;
+		if(checkforleapyear(year) == true) {
+			var cal = leap_cal;
+		} else {
+			var cal = normal_cal;
+		}
+		var monthview_dayofweek = dayofweek;
+		var monthview_dayofmonth = dayofmonth;
+		for(var i = monthview_dayofmonth; i > 1; i--) {
+			if(monthview_dayofweek == 0) {
+				monthview_dayofweek = 6;
+			} else {
+				monthview_dayofweek--;
+			}
+		}
+		document.getElementById("onemonthview_week_5").style.display = "none";
+		document.getElementById("onemonthview_week_6").style.display = "none";
+		rows = parseInt(monthview_dayofweek) + parseInt(cal[month]);
+		rows = rows / 7;
+		rows = Math.ceil(rows);
+		var dates = generate_dates("onemonth");
+		document.getElementById("dateinfo_onemonthview_monday_1").innerHTML = dates[0][0] + space + monthshort[dates[0][1]];
+		document.getElementById("dateinfo_onemonthview_tuesday_1").innerHTML = dates[1][0] + space + monthshort[dates[1][1]];
+		document.getElementById("dateinfo_onemonthview_wednesday_1").innerHTML = dates[2][0] + space + monthshort[dates[2][1]];
+		document.getElementById("dateinfo_onemonthview_thursday_1").innerHTML = dates[3][0] + space + monthshort[dates[3][1]];
+		document.getElementById("dateinfo_onemonthview_friday_1").innerHTML = dates[4][0] + space + monthshort[dates[4][1]];
+		document.getElementById("dateinfo_onemonthview_saturday_1").innerHTML = dates[5][0] + space + monthshort[dates[5][1]];
+		document.getElementById("dateinfo_onemonthview_sunday_1").innerHTML = dates[6][0] + space + monthshort[dates[6][1]];
+		document.getElementById("dateinfo_onemonthview_monday_2").innerHTML = dates[7][0] + space + monthshort[dates[7][1]];
+		document.getElementById("dateinfo_onemonthview_tuesday_2").innerHTML = dates[8][0] + space + monthshort[dates[8][1]];
+		document.getElementById("dateinfo_onemonthview_wednesday_2").innerHTML = dates[9][0] + space + monthshort[dates[9][1]];
+		document.getElementById("dateinfo_onemonthview_thursday_2").innerHTML = dates[10][0] + space + monthshort[dates[10][1]];
+		document.getElementById("dateinfo_onemonthview_friday_2").innerHTML = dates[11][0] + space + monthshort[dates[11][1]];
+		document.getElementById("dateinfo_onemonthview_saturday_2").innerHTML = dates[12][0] + space + monthshort[dates[12][1]];
+		document.getElementById("dateinfo_onemonthview_sunday_2").innerHTML = dates[13][0] + space + monthshort[dates[13][1]];
+		document.getElementById("dateinfo_onemonthview_monday_3").innerHTML = dates[14][0] + space + monthshort[dates[14][1]];
+		document.getElementById("dateinfo_onemonthview_tuesday_3").innerHTML = dates[15][0] + space + monthshort[dates[15][1]];
+		document.getElementById("dateinfo_onemonthview_wednesday_3").innerHTML = dates[16][0] + space + monthshort[dates[16][1]];
+		document.getElementById("dateinfo_onemonthview_thursday_3").innerHTML = dates[17][0] + space + monthshort[dates[17][1]];
+		document.getElementById("dateinfo_onemonthview_friday_3").innerHTML = dates[18][0] + space + monthshort[dates[18][1]];
+		document.getElementById("dateinfo_onemonthview_saturday_3").innerHTML = dates[19][0] + space + monthshort[dates[19][1]];
+		document.getElementById("dateinfo_onemonthview_sunday_3").innerHTML = dates[20][0] + space + monthshort[dates[20][1]];
+		document.getElementById("dateinfo_onemonthview_monday_4").innerHTML = dates[21][0] + space + monthshort[dates[21][1]];
+		document.getElementById("dateinfo_onemonthview_tuesday_4").innerHTML = dates[22][0] + space + monthshort[dates[22][1]];
+		document.getElementById("dateinfo_onemonthview_wednesday_4").innerHTML = dates[23][0] + space + monthshort[dates[23][1]];
+		document.getElementById("dateinfo_onemonthview_thursday_4").innerHTML = dates[24][0] + space + monthshort[dates[24][1]];
+		document.getElementById("dateinfo_onemonthview_friday_4").innerHTML = dates[25][0] + space + monthshort[dates[25][1]];
+		document.getElementById("dateinfo_onemonthview_saturday_4").innerHTML = dates[26][0] + space + monthshort[dates[26][1]];
+		document.getElementById("dateinfo_onemonthview_sunday_4").innerHTML = dates[27][0] + space + monthshort[dates[27][1]];
+		document.getElementById("dateinfo_onemonthview_monday_5").innerHTML = dates[28][0] + space + monthshort[dates[28][1]];
+		document.getElementById("dateinfo_onemonthview_tuesday_5").innerHTML = dates[29][0] + space + monthshort[dates[29][1]];
+		document.getElementById("dateinfo_onemonthview_wednesday_5").innerHTML = dates[30][0] + space + monthshort[dates[30][1]];
+		document.getElementById("dateinfo_onemonthview_thursday_5").innerHTML = dates[31][0] + space + monthshort[dates[31][1]];
+		document.getElementById("dateinfo_onemonthview_friday_5").innerHTML = dates[32][0] + space + monthshort[dates[32][1]];
+		document.getElementById("dateinfo_onemonthview_saturday_5").innerHTML = dates[33][0] + space + monthshort[dates[33][1]];
+		document.getElementById("dateinfo_onemonthview_sunday_5").innerHTML = dates[34][0] + space + monthshort[dates[34][1]];
+		document.getElementById("dateinfo_onemonthview_monday_6").innerHTML = dates[35][0] + space + monthshort[dates[35][1]];
+		document.getElementById("dateinfo_onemonthview_tuesday_6").innerHTML = dates[36][0] + space + monthshort[dates[36][1]];
+		document.getElementById("dateinfo_onemonthview_wednesday_6").innerHTML = dates[37][0] + space + monthshort[dates[37][1]];
+		document.getElementById("dateinfo_onemonthview_thursday_6").innerHTML = dates[38][0] + space + monthshort[dates[38][1]];
+		document.getElementById("dateinfo_onemonthview_friday_6").innerHTML = dates[39][0] + space + monthshort[dates[39][1]];
+		document.getElementById("dateinfo_onemonthview_saturday_6").innerHTML = dates[40][0] + space + monthshort[dates[40][1]];
+		document.getElementById("dateinfo_onemonthview_sunday_6").innerHTML = dates[41][0] + space + monthshort[dates[41][1]];
+		if(rows == 5) {
+			document.getElementById("onemonthview_week_5").style.display = "table-row";
+		}
+		if(rows == 6) {
+			document.getElementById("onemonthview_week_5").style.display = "table-row";
+			document.getElementById("onemonthview_week_6").style.display = "table-row";
+		}
+	}
+	if(loadview == "list") {
+		document.getElementById("datecontrol_date_label").innerHTML = dayshort[dayofweek] + space + dayofmonth + space + monthshort[month] + space + year;
+	}
+}
+
+function load_events(loadview) {
+	if(loadview == "oneday") {
+		if( typeof (events[year][month][dayofmonth]) != "undefined") {
+			if( typeof (events[year][month][dayofmonth]["allday"]) != "undefined") {
+				var eventnumber = 1;
+				var eventcontainer = document.getElementById("onedayview_wholeday");
+				while( typeof (events[year][month][dayofmonth]["allday"][eventnumber]) != "undefined") {
+					var newp = document.createElement("p");
+					newp.id = "onedayview_allday_" + eventnumber;
+					newp.className = "onedayview_event";
+					eventcontainer.appendChild(newp);
+					document.getElementById("onedayview_allday_" + eventnumber).innerHTML = events[year][month][dayofmonth]["allday"][eventnumber]["description"];
+					eventnumber++;
+				}
+			}
+			for( i = 0; i <= 23; i++) {
+				if( typeof (events[year][month][dayofmonth][i]) != "undefined") {
+					var eventnumber = 1;
+					while( typeof (events[year][month][dayofmonth][i][eventnumber]) != "undefined") {
+						var newp = document.createElement("p");
+						newp.id = "onedayview_" + i + "_" + eventnumber;
+						newp.className = "onedayview_event";
+						eventcontainer.appendChild(newp);
+						document.getElementById("onedayview_" + i + "_" + eventnumber).innerHTML = events[year][month][dayofmonth][i][eventnumber]["description"];
+						eventnumber++;
+					}
+				}
+			}
+		}
+	}
+	if(loadview == "oneweek") {//(generate_dayofmonth, generate_month, generate_year);
+		var weekdays = new Array("monday", "tuesday", "wednesday", "thursday", "friday", "saturday", "sunday");
+		var dates = generate_dates("oneweek");
+		document.getElementById("devbox").innerHTML = "";
+		for(var i = 0; i <= 6; i++) {
+			var loadevents_month = dates[i][0];
+			var loadevents_days = dates[i][1];
+			if( typeof (events[year][loadevents_month]) != "undefined") {
+				if( typeof (events[year][loadevents_month][loadevents_days]) != "undefined") {
+					if( typeof (events[year][loadevents_month][loadevents_days]["allday"]) != "undefined") {
+						var eventnumber = 1;
+						var eventcontainer = document.getElementById("oneweekview_" + weekdays[i] + "_allday");
+						while( typeof (events[year][loadevents_month][loadevents_days]["allday"][eventnumber]) != "undefined") {
+							var newp = document.createElement("p");
+							newp.id = "oneweekview_" + weekdays[i] + "_allday_" + eventnumber;
+							newp.className = "oneweekview_event";
+							eventcontainer.appendChild(newp);
+							document.getElementById("oneweekview_" + weekdays[i] + "_allday_" + eventnumber).innerHTML = events[year][loadevents_month][loadevents_days]["allday"][eventnumber]["description"];
+							eventnumber++;
+						}
+					}
+					for(var time = 0; time <= 23; time++) {
+						if( typeof (events[year][loadevents_month][loadevents_days][time]) != "undefined") {
+							var eventnumber = 1;
+							var eventcontainer = document.getElementById("oneweekview_" + weekdays[i] + "_" + time);
+							while( typeof (events[year][loadevents_month][loadevents_days][eventnumber]) != "undefined") {
+								var newp = document.createElement("p");
+								newp.id = "oneweekview_" + i + "_" + eventnumber;
+								newp.className = "oneweekview_event";
+								eventcontainer.appendChild(newp);
+								document.getElementById("oneweekview_" + i + "_" + eventnumber).innerHTML = events[year][loadevents_month][loadevents_days][i][eventnumber]["description"];
+								eventnumber++;
+							}
+						}
+					}
+				}
+			}
+		}
+	}
+	if(loadview == "fourweeks") {
+		var weekdays = new Array("monday", "tuesday", "wednesday", "thursday", "friday", "saturday", "sunday");
+		var dates = generate_dates("fourweeks");
+		var weekdaynum = 0;
+		var weeknum = 1;
+		for(var i = 0; i <= 27; i++) {
+			var loadevents_month = dates[i][0];
+			var loadevents_days = dates[i][1];
+			if( typeof (events[year][loadevents_month]) != "undefined") {
+				if( typeof (events[year][loadevents_month][loadevents_days]) != "undefined") {
+					var pnum = 0;
+					if( typeof (events[year][loadevents_month][loadevents_days]["allday"]) != "undefined") {
+						var eventnumber = 1;
+						var eventcontainer = document.getElementById("events_fourweeksview_" + weekdays[weekdaynum] + "_" + weeknum);
+						while( typeof (events[year][loadevents_month][loadevents_days]["allday"][eventnumber]) != "undefined") {
+							var newp = document.createElement("p");
+							newp.id = "fourweeksview_" + weekdays[weekdaynum] + "_" + weeknum + "_" + pnum;
+							newp.className = "fourweeksview_event";
+							eventcontainer.appendChild(newp);
+							document.getElementById("fourweeksview_" + weekdays[weekdaynum] + "_" + weeknum + "_" + pnum).innerHTML = events[year][loadevents_month][loadevents_days]["allday"][eventnumber]["description"];
+							eventnumber++;
+							pnum++;
+						}
+					}
+					for(var time = 0; time <= 23; time++) {
+						if( typeof (events[year][loadevents_month][loadevents_days][time]) != "undefined") {
+							var eventnumber = 1;
+							var eventcontainer = document.getElementById("events_fourweeksview_" + weekdays[weekdaynum] + "_" + weeknum);
+							while( typeof (events[year][loadevents_month][loadevents_days][i][eventnumber]) != "undefined") {
+								var newp = document.createElement("p");
+								newp.id = "fourweeksview_" + i + "_" + eventnumber;
+								newp.className = "fourweeksview_event";
+								eventcontainer.appendChild(newp);
+								document.getElementById("fourweeksview_" + i + "_" + eventnumber).innerHTML = events[year][loadevents_month][loadevents_days][i][eventnumber]["description"];
+								eventnumber++;
+								pnum++;
+							}
+						}
+					}
+				}
+			}
+			if(weekdaynum == 6){
+				weekdaynum = 0;
+				weeknum++;
+			}else{
+				weekdaynum++;
+			}
+		}
+	}
+	if(loadview == "onemonth") {
+		var weekdays = new Array("monday", "tuesday", "wednesday", "thursday", "friday", "saturday", "sunday");
+		var dates = generate_dates("onemonth");
+		var weekdaynum = 0;
+		var weeknum = 1;
+		for(var i = 0; i <= 41; i++) {
+			var loadevents_month = dates[i][0];
+			var loadevents_days = dates[i][1];
+			if( typeof (events[year][loadevents_month]) != "undefined") {
+				if( typeof (events[year][loadevents_month][loadevents_days]) != "undefined") {
+					var pnum = 0;
+					if( typeof (events[year][loadevents_month][loadevents_days]["allday"]) != "undefined") {
+						var eventnumber = 1;
+						var eventcontainer = document.getElementById("events_onemonthview_" + weekdays[weekdaynum] + "_" + weeknum);
+						while( typeof (events[year][loadevents_month][loadevents_days]["allday"][eventnumber]) != "undefined") {
+							var newp = document.createElement("p");
+							newp.id = "onemonthview_" + weekdays[weekdaynum] + "_" + weeknum + "_" + pnum;
+							newp.className = "onemonthview_event";
+							eventcontainer.appendChild(newp);
+							document.getElementById("onemonthview_" + weekdays[weekdaynum] + "_" + weeknum + "_" + pnum).innerHTML = events[year][loadevents_month][loadevents_days]["allday"][eventnumber]["description"];
+							eventnumber++;
+							pnum++;
+						}
+					}
+					for(var time = 0; time <= 23; time++) {
+						if( typeof (events[year][loadevents_month][loadevents_days][time]) != "undefined") {
+							var eventnumber = 1;
+							var eventcontainer = document.getElementById("events_onemonthview_" + weekdays[weekdaynum] + "_" + weeknum);
+							while( typeof (events[year][loadevents_month][loadevents_days][i][eventnumber]) != "undefined") {
+								var newp = document.createElement("p");
+								newp.id = "onemonthview_" + i + "_" + eventnumber;
+								newp.className = "onemonthview_event";
+								eventcontainer.appendChild(newp);
+								document.getElementById("onemonthview_" + i + "_" + eventnumber).innerHTML = events[year][loadevents_month][loadevents_days][i][eventnumber]["description"];
+								eventnumber++;
+								pnum++;
+							}
+						}
+					}
+				}
+			}
+			if(weekdaynum == 6){
+				weekdaynum = 0;
+				weeknum++;
+			}else{
+				weekdaynum++;
+			}
+		}
+	}
+	if(loadview == "list") {
+		//
+	}
+}
+
+function remove_events(removeview) {
+	if(removeview == "oneday") {
+		document.getElementById("onedayview_wholeday").innerHTML = "";
+		for(var i = 0; i <= 23; i++) {
+			document.getElementById("onedayview_" + i).innerHTML = "";
+		}
+	}
+	if(removeview == "oneweek") {
+		var weekdays = new Array("monday", "tuesday", "wednesday", "thursday", "friday", "saturday", "sunday");
+		for( i = 0; i <= 6; i++) {
+			document.getElementById("oneweekview_" + weekdays[i] + "_allday").innerHTML = "";
+			for(var time = 0; time <= 23; time++) {
+				document.getElementById("oneweekview_" + weekdays[i] + "_" + time).innerHTML = "";
+			}
+		}
+	}
+	if(removeview == "fourweeks") {
+		document.getElementById("events_fourweeksview_monday_1").innerHTML = "";
+		document.getElementById("events_fourweeksview_tuesday_1").innerHTML = "";
+		document.getElementById("events_fourweeksview_wednesday_1").innerHTML = "";
+		document.getElementById("events_fourweeksview_thursday_1").innerHTML = "";
+		document.getElementById("events_fourweeksview_friday_1").innerHTML = "";
+		document.getElementById("events_fourweeksview_saturday_1").innerHTML = "";
+		document.getElementById("events_fourweeksview_sunday_1").innerHTML = "";
+		document.getElementById("events_fourweeksview_monday_2").innerHTML = "";
+		document.getElementById("events_fourweeksview_tuesday_2").innerHTML = "";
+		document.getElementById("events_fourweeksview_wednesday_2").innerHTML = "";
+		document.getElementById("events_fourweeksview_thursday_2").innerHTML = "";
+		document.getElementById("events_fourweeksview_friday_2").innerHTML = "";
+		document.getElementById("events_fourweeksview_saturday_2").innerHTML = "";
+		document.getElementById("events_fourweeksview_sunday_2").innerHTML = "";
+		document.getElementById("events_fourweeksview_monday_3").innerHTML = "";
+		document.getElementById("events_fourweeksview_tuesday_3").innerHTML = "";
+		document.getElementById("events_fourweeksview_wednesday_3").innerHTML = "";
+		document.getElementById("events_fourweeksview_thursday_3").innerHTML = "";
+		document.getElementById("events_fourweeksview_friday_3").innerHTML = "";
+		document.getElementById("events_fourweeksview_saturday_3").innerHTML = "";
+		document.getElementById("events_fourweeksview_sunday_3").innerHTML = "";
+		document.getElementById("events_fourweeksview_monday_4").innerHTML = "";
+		document.getElementById("events_fourweeksview_tuesday_4").innerHTML = "";
+		document.getElementById("events_fourweeksview_wednesday_4").innerHTML = "";
+		document.getElementById("events_fourweeksview_thursday_4").innerHTML = "";
+		document.getElementById("events_fourweeksview_friday_4").innerHTML = "";
+		document.getElementById("events_fourweeksview_saturday_4").innerHTML = "";
+		document.getElementById("events_fourweeksview_sunday_4").innerHTML = "";
+	}
+	if(removeview == "onemonth") {
+		document.getElementById("events_onemonthview_monday_1").innerHTML = "";
+		document.getElementById("events_onemonthview_tuesday_1").innerHTML = "";
+		document.getElementById("events_onemonthview_wednesday_1").innerHTML = "";
+		document.getElementById("events_onemonthview_thursday_1").innerHTML = "";
+		document.getElementById("events_onemonthview_friday_1").innerHTML = "";
+		document.getElementById("events_onemonthview_saturday_1").innerHTML = "";
+		document.getElementById("events_onemonthview_sunday_1").innerHTML = "";
+		document.getElementById("events_onemonthview_monday_2").innerHTML = "";
+		document.getElementById("events_onemonthview_tuesday_2").innerHTML = "";
+		document.getElementById("events_onemonthview_wednesday_2").innerHTML = "";
+		document.getElementById("events_onemonthview_thursday_2").innerHTML = "";
+		document.getElementById("events_onemonthview_friday_2").innerHTML = "";
+		document.getElementById("events_onemonthview_saturday_2").innerHTML = "";
+		document.getElementById("events_onemonthview_sunday_2").innerHTML = "";
+		document.getElementById("events_onemonthview_monday_3").innerHTML = "";
+		document.getElementById("events_onemonthview_tuesday_3").innerHTML = "";
+		document.getElementById("events_onemonthview_wednesday_3").innerHTML = "";
+		document.getElementById("events_onemonthview_thursday_3").innerHTML = "";
+		document.getElementById("events_onemonthview_friday_3").innerHTML = "";
+		document.getElementById("events_onemonthview_saturday_3").innerHTML = "";
+		document.getElementById("events_onemonthview_sunday_3").innerHTML = "";
+		document.getElementById("events_onemonthview_monday_4").innerHTML = "";
+		document.getElementById("events_onemonthview_tuesday_4").innerHTML = "";
+		document.getElementById("events_onemonthview_wednesday_4").innerHTML = "";
+		document.getElementById("events_onemonthview_thursday_4").innerHTML = "";
+		document.getElementById("events_onemonthview_friday_4").innerHTML = "";
+		document.getElementById("events_onemonthview_saturday_4").innerHTML = "";
+		document.getElementById("events_onemonthview_sunday_4").innerHTML = "";
+		document.getElementById("events_onemonthview_monday_5").innerHTML = "";
+		document.getElementById("events_onemonthview_tuesday_5").innerHTML = "";
+		document.getElementById("events_onemonthview_wednesday_5").innerHTML = "";
+		document.getElementById("events_onemonthview_thursday_5").innerHTML = "";
+		document.getElementById("events_onemonthview_friday_5").innerHTML = "";
+		document.getElementById("events_onemonthview_saturday_5").innerHTML = "";
+		document.getElementById("events_onemonthview_sunday_5").innerHTML = "";
+		document.getElementById("events_onemonthview_monday_6").innerHTML = "";
+		document.getElementById("events_onemonthview_tuesday_6").innerHTML = "";
+		document.getElementById("events_onemonthview_wednesday_6").innerHTML = "";
+		document.getElementById("events_onemonthview_thursday_6").innerHTML = "";
+		document.getElementById("events_onemonthview_friday_6").innerHTML = "";
+		document.getElementById("events_onemonthview_saturday_6").innerHTML = "";
+		document.getElementById("events_onemonthview_sunday_6").innerHTML = "";
+	}
+	if(removeview == "list") {
+		document.getElementById("listview").innerHTML = "";
+	}
+}
\ No newline at end of file
diff --git a/apps/calendar/js/calendar_dialog.js b/apps/calendar/js/calendar_dialog.js
new file mode 100755
index 00000000000..fa89c70e847
--- /dev/null
+++ b/apps/calendar/js/calendar_dialog.js
@@ -0,0 +1,56 @@
+/*************************************************
+ * ownCloud - Calendar Plugin                     *
+ *                                                *
+ * (c) Copyright 2011 Georg Ehrke                 *
+ * author: Georg Ehrke                            *
+ * email: ownclouddev at georgswebsite dot de     *
+ * homepage: ownclouddev.georgswebsite.de         *
+ * manual: ownclouddev.georgswebsite.de/manual    *
+ * License: GNU General Public License (GPL)      *
+ *                                                *
+ * <http://www.gnu.org/licenses/>                 *
+ * If you are not able to view the License,       *
+ * <http://www.gnu.org/licenses/>                 *
+ * <http://ownclouddev.georgswebsite.de/license/> *
+ * please write to the Free Software Foundation.  *
+ * Address:                                       *
+ * 59 Temple Place, Suite 330, Boston,            *
+ * MA 02111-1307  USA                             *
+ **************************************************
+ *               list of all fx                   *
+ * choosecalendar_dialog - calendar chooser       *
+ * newevent_dialog - create event dialog          *
+ * editevent_dialog - edit event dialog           *
+ * choosecalendar_dialog_submit - submit          *
+ * newevent_dialog_submit - submit                *
+ * editevent_dialog_submit - submit               *
+ *************************************************/
+function choosecalendar_dialog() {
+	$( function() {
+		$( "#choosecalendar_dialog" ).dialog();
+	});
+}
+
+function newevent_dialog() {
+	$( function() {
+		$( "#newevent" ).dialog();
+	});
+}
+
+function editevent_dialog() {
+	$( function() {
+		$( "#editevent" ).dialog();
+	});
+}
+
+function choosecalendar_dialog_submit() {
+
+}
+
+function newevent_dialog_submit() {
+
+}
+
+function editevent_dialog_submit() {
+
+}
\ No newline at end of file
diff --git a/apps/calendar/js/calendar_init.js b/apps/calendar/js/calendar_init.js
new file mode 100755
index 00000000000..89fbe01b364
--- /dev/null
+++ b/apps/calendar/js/calendar_init.js
@@ -0,0 +1,61 @@
+/************************************************
+* ownCloud - Calendar Plugin                    *
+*                                               *
+* (c) Copyright 2011 Georg Ehrke                *
+* author: Georg Ehrke                           *
+* email: ownclouddev at georgswebsite dot de    *
+* homepage: http://ownclouddev.georgswebsite.de *
+* License: GPL                                  *
+* <http://www.gnu.org/licenses/>.               *
+************************************************/
+//loading Buttons
+$(function(){
+	$("#view").buttonset();
+	$("#choosecalendar").buttonset();
+	$("#datecontrol_left").button();
+	$("#datecontrol_left").button({ disabled: true });
+	$("#datecontrol_date").button();
+	$("#datecontrol_right").button();
+	$("#datecontrol_right").button({ disabled: true });
+	$(".choosecalendar_check").button();
+	$("#oneday").button();
+	$("#oneweek").button();
+	$("#fourweek").button();
+	$("#onemonth").button();
+	$("#list").button();
+});
+//init date vars
+var date = new Date();
+var dayofweek = date.getDay();
+var month = date.getMonth();
+var dayofmonth = date.getDate();
+var year = date.getFullYear();
+var daylong = new Array("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday");
+var dayshort = new Array("Sun.", "Mon.", "Tue.", "Wed.", "Thu.", "Fri.", "Sat.");
+var monthlong = new Array("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December");
+var monthshort = new Array("Jan.", "Feb.", "Mar.", "Apr.", "May", "Jun.", "Jul.", "Aug.", "Sep.", "Oct.", "Nov.", "Dec.");
+var space = " ";
+var normal_cal = new Array("31","28", "31", "30", "31", "30", "31", "31", "30", "31", "30", "31");
+var leap_cal = new Array("31","29", "31", "30", "31", "30", "31", "31", "30", "31", "30", "31");
+//init today date vars
+var today = new Date();
+var todaydayofweek = today.getDay();
+var todaymonth = today.getMonth();
+var todaydayofmonth = today.getDate();
+var todayyear = today.getFullYear();
+//other vars
+var rows;
+var dates;
+var listview_numofevents = 0;
+var listview_count = 0;
+//event vars
+var events = new Array(2011);
+events[2011] = new Array(0,1,2,3,4,5,6,7,8,9,10,11);
+events[2011][7] = new Array();
+events[2011][7][7] = new Array();
+events[2011][7][7]["allday"] = new Array(1, 2);
+events[2011][7][7]["allday"][1] = new Array("description");
+events[2011][7][7]["allday"][1]["description"] = "abc";
+events[2011][7][7]["allday"][2] = new Array("description");
+events[2011][7][7]["allday"][2]["description"] = "ghfgh";
+events[2011][7][13] = new Array();
diff --git a/apps/calendar/lib/PDO.php b/apps/calendar/lib/PDO.php
new file mode 100644
index 00000000000..d4c8520aa1f
--- /dev/null
+++ b/apps/calendar/lib/PDO.php
@@ -0,0 +1,352 @@
+<?php
+
+/**
+ * PDO CalDAV backend
+ *
+ * This backend is used to store calendar-data in a PDO database, such as 
+ * sqlite or MySQL
+ * 
+ * @package Sabre
+ * @subpackage CalDAV
+ * @copyright Copyright (C) 2007-2011 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/) 
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class OC_Connector_Sabre_CalDAV extends Sabre_CalDAV_Backend_Abstract {
+    /**
+     * List of CalDAV properties, and how they map to database fieldnames
+     *
+     * Add your own properties by simply adding on to this array
+     * 
+     * @var array
+     */
+    public $propertyMap = array(
+        '{DAV:}displayname'                          => 'displayname',
+        '{urn:ietf:params:xml:ns:caldav}calendar-description' => 'description',
+        '{urn:ietf:params:xml:ns:caldav}calendar-timezone'    => 'timezone',
+        '{http://apple.com/ns/ical/}calendar-order'  => 'calendarorder',
+        '{http://apple.com/ns/ical/}calendar-color'  => 'calendarcolor',
+    );
+
+    /**
+     * Returns a list of calendars for a principal.
+     *
+     * Every project is an array with the following keys:
+     *  * id, a unique id that will be used by other functions to modify the
+     *    calendar. This can be the same as the uri or a database key.
+     *  * uri, which the basename of the uri with which the calendar is 
+     *    accessed.
+     *  * principalUri. The owner of the calendar. Almost always the same as
+     *    principalUri passed to this method.
+     *
+     * Furthermore it can contain webdav properties in clark notation. A very
+     * common one is '{DAV:}displayname'. 
+     *
+     * @param string $principalUri 
+     * @return array 
+     */
+    public function getCalendarsForUser($principalUri) {
+
+        $fields = array_values($this->propertyMap);
+        $fields[] = 'id';
+        $fields[] = 'uri';
+        $fields[] = 'ctag';
+        $fields[] = 'components';
+        $fields[] = 'principaluri';
+
+        // Making fields a comma-delimited list 
+        $fields = implode(', ', $fields);
+        $stmt = $this->pdo->prepare("SELECT " . $fields . " FROM `".$this->calendarTableName."` WHERE principaluri = ?"); 
+        $stmt->execute(array($principalUri));
+
+        $calendars = array();
+        while($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
+
+            $components = explode(',',$row['components']);
+
+            $calendar = array(
+                'id' => $row['id'],
+                'uri' => $row['uri'],
+                'principaluri' => $row['principaluri'],
+                '{' . Sabre_CalDAV_Plugin::NS_CALENDARSERVER . '}getctag' => $row['ctag']?$row['ctag']:'0',
+                '{' . Sabre_CalDAV_Plugin::NS_CALDAV . '}supported-calendar-component-set' => new Sabre_CalDAV_Property_SupportedCalendarComponentSet($components),
+            );
+        
+
+            foreach($this->propertyMap as $xmlName=>$dbName) {
+                $calendar[$xmlName] = $row[$dbName];
+            }
+
+            $calendars[] = $calendar;
+
+        }
+
+        return $calendars;
+
+    }
+
+    /**
+     * Creates a new calendar for a principal.
+     *
+     * If the creation was a success, an id must be returned that can be used to reference
+     * this calendar in other methods, such as updateCalendar
+     *
+     * @param string $principalUri
+     * @param string $calendarUri
+     * @param array $properties
+     * @return mixed
+     */
+    public function createCalendar($principalUri,$calendarUri, array $properties) {
+
+        $fieldNames = array(
+            'principaluri',
+            'uri',
+            'ctag',
+        );
+        $values = array(
+            ':principaluri' => $principalUri,
+            ':uri'          => $calendarUri,
+            ':ctag'         => 1,
+        );
+
+        // Default value
+        $sccs = '{urn:ietf:params:xml:ns:caldav}supported-calendar-component-set';
+        $fieldNames[] = 'components';
+        if (!isset($properties[$sccs])) {
+            $values[':components'] = 'VEVENT,VTODO';
+        } else {
+            if (!($properties[$sccs] instanceof Sabre_CalDAV_Property_SupportedCalendarComponentSet)) {
+                throw new Sabre_DAV_Exception('The ' . $sccs . ' property must be of type: Sabre_CalDAV_Property_SupportedCalendarComponentSet');
+            }
+            $values[':components'] = implode(',',$properties[$sccs]->getValue());
+        }
+
+        foreach($this->propertyMap as $xmlName=>$dbName) {
+            if (isset($properties[$xmlName])) {
+
+                $myValue = $properties[$xmlName];
+                $values[':' . $dbName] = $properties[$xmlName];
+                $fieldNames[] = $dbName;
+            }
+        }
+
+        $stmt = $this->pdo->prepare("INSERT INTO `".$this->calendarTableName."` (".implode(', ', $fieldNames).") VALUES (".implode(', ',array_keys($values)).")");
+        $stmt->execute($values);
+
+        return $this->pdo->lastInsertId();
+
+    }
+
+    /**
+     * Updates a calendars properties 
+     *
+     * The properties array uses the propertyName in clark-notation as key,
+     * and the array value for the property value. In the case a property
+     * should be deleted, the property value will be null.
+     *
+     * This method must be atomic. If one property cannot be changed, the
+     * entire operation must fail.
+     *
+     * If the operation was successful, true can be returned.
+     * If the operation failed, false can be returned.
+     *
+     * Deletion of a non-existant property is always succesful.
+     *
+     * Lastly, it is optional to return detailed information about any
+     * failures. In this case an array should be returned with the following
+     * structure:
+     *
+     * array(
+     *   403 => array(
+     *      '{DAV:}displayname' => null,
+     *   ),
+     *   424 => array(
+     *      '{DAV:}owner' => null,
+     *   )
+     * )
+     *
+     * In this example it was forbidden to update {DAV:}displayname. 
+     * (403 Forbidden), which in turn also caused {DAV:}owner to fail
+     * (424 Failed Dependency) because the request needs to be atomic.
+     *
+     * @param string $calendarId
+     * @param array $properties
+     * @return bool|array 
+     */
+    public function updateCalendar($calendarId, array $properties) {
+
+        $newValues = array();
+        $result = array(
+            200 => array(), // Ok
+            403 => array(), // Forbidden
+            424 => array(), // Failed Dependency
+        );
+
+        $hasError = false;
+
+        foreach($properties as $propertyName=>$propertyValue) {
+
+            // We don't know about this property. 
+            if (!isset($this->propertyMap[$propertyName])) {
+                $hasError = true;
+                $result[403][$propertyName] = null;
+                unset($properties[$propertyName]);
+                continue;
+            }
+
+            $fieldName = $this->propertyMap[$propertyName];
+            $newValues[$fieldName] = $propertyValue;
+                
+        }
+
+        // If there were any errors we need to fail the request
+        if ($hasError) {
+            // Properties has the remaining properties
+            foreach($properties as $propertyName=>$propertyValue) {
+                $result[424][$propertyName] = null;
+            }
+
+            // Removing unused statuscodes for cleanliness
+            foreach($result as $status=>$properties) {
+                if (is_array($properties) && count($properties)===0) unset($result[$status]);
+            }
+
+            return $result;
+
+        }
+
+        // Success
+
+        // Now we're generating the sql query.
+        $valuesSql = array();
+        foreach($newValues as $fieldName=>$value) {
+            $valuesSql[] = $fieldName . ' = ?';
+        }
+        $valuesSql[] = 'ctag = ctag + 1';
+
+        $stmt = $this->pdo->prepare("UPDATE `" . $this->calendarTableName . "` SET " . implode(', ',$valuesSql) . " WHERE id = ?");
+        $newValues['id'] = $calendarId; 
+        $stmt->execute(array_values($newValues));
+
+        return true; 
+
+    }
+
+    /**
+     * Delete a calendar and all it's objects 
+     * 
+     * @param string $calendarId 
+     * @return void
+     */
+    public function deleteCalendar($calendarId) {
+
+        $stmt = $this->pdo->prepare('DELETE FROM `'.$this->calendarObjectTableName.'` WHERE calendarid = ?');
+        $stmt->execute(array($calendarId));
+
+        $stmt = $this->pdo->prepare('DELETE FROM `'.$this->calendarTableName.'` WHERE id = ?');
+        $stmt->execute(array($calendarId));
+
+    }
+
+    /**
+     * Returns all calendar objects within a calendar object.
+     *
+     * Every item contains an array with the following keys:
+     *   * id - unique identifier which will be used for subsequent updates
+     *   * calendardata - The iCalendar-compatible calnedar data
+     *   * uri - a unique key which will be used to construct the uri. This can be any arbitrary string.
+     *   * lastmodified - a timestamp of the last modification time
+     *   * etag - An arbitrary string, surrounded by double-quotes. (e.g.: 
+     *   '  "abcdef"')
+     *   * calendarid - The calendarid as it was passed to this function.
+     *
+     * Note that the etag is optional, but it's highly encouraged to return for 
+     * speed reasons.
+     *
+     * The calendardata is also optional. If it's not returned 
+     * 'getCalendarObject' will be called later, which *is* expected to return 
+     * calendardata.
+     * 
+     * @param string $calendarId 
+     * @return array 
+     */
+    public function getCalendarObjects($calendarId) {
+
+        $stmt = $this->pdo->prepare('SELECT * FROM `'.$this->calendarObjectTableName.'` WHERE calendarid = ?');
+        $stmt->execute(array($calendarId));
+        return $stmt->fetchAll();
+
+    }
+
+    /**
+     * Returns information from a single calendar object, based on it's object
+     * uri.
+     *
+     * The returned array must have the same keys as getCalendarObjects. The 
+     * 'calendardata' object is required here though, while it's not required 
+     * for getCalendarObjects.
+     * 
+     * @param string $calendarId 
+     * @param string $objectUri 
+     * @return array 
+     */
+    public function getCalendarObject($calendarId,$objectUri) {
+
+        $stmt = $this->pdo->prepare('SELECT * FROM `'.$this->calendarObjectTableName.'` WHERE calendarid = ? AND uri = ?');
+        $stmt->execute(array($calendarId, $objectUri));
+        return $stmt->fetch();
+
+    }
+
+    /**
+     * Creates a new calendar object. 
+     * 
+     * @param string $calendarId 
+     * @param string $objectUri 
+     * @param string $calendarData 
+     * @return void
+     */
+    public function createCalendarObject($calendarId,$objectUri,$calendarData) {
+
+        $stmt = $this->pdo->prepare('INSERT INTO `'.$this->calendarObjectTableName.'` (calendarid, uri, calendardata, lastmodified) VALUES (?,?,?,?)');
+        $stmt->execute(array($calendarId,$objectUri,$calendarData,time()));
+        $stmt = $this->pdo->prepare('UPDATE `'.$this->calendarTableName.'` SET ctag = ctag + 1 WHERE id = ?');
+        $stmt->execute(array($calendarId));
+
+    }
+
+    /**
+     * Updates an existing calendarobject, based on it's uri. 
+     * 
+     * @param string $calendarId 
+     * @param string $objectUri 
+     * @param string $calendarData 
+     * @return void
+     */
+    public function updateCalendarObject($calendarId,$objectUri,$calendarData) {
+
+        $stmt = $this->pdo->prepare('UPDATE `'.$this->calendarObjectTableName.'` SET calendardata = ?, lastmodified = ? WHERE calendarid = ? AND uri = ?');
+        $stmt->execute(array($calendarData,time(),$calendarId,$objectUri));
+        $stmt = $this->pdo->prepare('UPDATE `'.$this->calendarTableName.'` SET ctag = ctag + 1 WHERE id = ?');
+        $stmt->execute(array($calendarId));
+
+    }
+
+    /**
+     * Deletes an existing calendar object. 
+     * 
+     * @param string $calendarId 
+     * @param string $objectUri 
+     * @return void
+     */
+    public function deleteCalendarObject($calendarId,$objectUri) {
+
+        $stmt = $this->pdo->prepare('DELETE FROM `'.$this->calendarObjectTableName.'` WHERE calendarid = ? AND uri = ?');
+        $stmt->execute(array($calendarId,$objectUri));
+        $stmt = $this->pdo->prepare('UPDATE `'. $this->calendarTableName .'` SET ctag = ctag + 1 WHERE id = ?');
+        $stmt->execute(array($calendarId));
+
+    }
+
+
+}
diff --git a/apps/calendar/lib/calendar.php b/apps/calendar/lib/calendar.php
new file mode 100644
index 00000000000..b7f33b13965
--- /dev/null
+++ b/apps/calendar/lib/calendar.php
@@ -0,0 +1,286 @@
+<?php
+/**
+ * ownCloud - Addressbook
+ *
+ * @author Jakob Sack
+ * @copyright 2011 Jakob Sack mail@jakobsack.de
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+/*
+ *
+ * The following SQL statement is just a help for developers and will not be
+ * executed!
+ *
+ * CREATE TABLE calendar_objects (
+ *     id INTEGER UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
+ *     calendarid INTEGER UNSIGNED NOT NULL,
+ *     objecttype VARCHAR(40) NOT NULL,
+ *     startdate DATETIME,
+ *     enddate DATETIME,
+ *     repeating INT(1),
+ *     summary VARCHAR(255),
+ *     calendardata TEXT,
+ *     uri VARCHAR(100),
+ *     lastmodified INT(11)
+ * );
+ * 
+ * CREATE TABLE calendar_calendars (
+ *     id INTEGER UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
+ *     userid VARCHAR(255),
+ *     displayname VARCHAR(100),
+ *     uri VARCHAR(100),
+ *     ctag INTEGER UNSIGNED NOT NULL DEFAULT '0',
+ *     description TEXT,
+ *     calendarorder INTEGER UNSIGNED NOT NULL DEFAULT '0',
+ *     calendarcolor VARCHAR(10),
+ *     timezone TEXT,
+ *     components VARCHAR(20)
+ * );
+ */
+
+/**
+ * This class manages our addressbooks.
+ */
+class OC_Calendar_Calendar{
+	public static function allCalendars($uid){
+		$stmt = OC_DB::prepare( 'SELECT * FROM *PREFIX*calendar_calendars WHERE userid = ?' );
+		$result = $stmt->execute(array($uid));
+		
+		$addressbooks = array();
+		while( $row = $result->fetchRow()){
+			$addressbooks[] = $row;
+		}
+
+		return $addressbooks;
+	}
+	
+	public static function allCakendarsWherePrincipalURIIs($principaluri){
+		$uid = self::extractUserID($principaluri);
+		return self::allCalendars($uid);
+	}
+
+	public static function findCalendar($id){
+		$stmt = OC_DB::prepare( 'SELECT * FROM *PREFIX*calendar_calendars WHERE id = ?' );
+		$result = $stmt->execute(array($id));
+
+		return $result->fetchRow();
+	}
+
+	public static function addAddressbook($userid,$name,$description){
+		$all = self::allAddressbooks($userid);
+		$uris = array();
+		foreach($all as $i){
+			$uris[] = $i['uri'];
+		}
+
+		$uri = self::createURI($name, $uris );
+
+		$stmt = OC_DB::prepare( 'INSERT INTO *PREFIX*contacts_addressbooks (userid,displayname,uri,description,ctag) VALUES(?,?,?,?,?)' );
+		$result = $stmt->execute(array($userid,$name,$uri,$description,1));
+
+		return OC_DB::insertid();
+	}
+
+	public static function addAddressbookFromDAVData($principaluri,$uri,$name,$description){
+		$userid = self::extractUserID($principaluri);
+		
+		$stmt = OC_DB::prepare( 'INSERT INTO *PREFIX*contacts_addressbooks (userid,displayname,uri,description,ctag) VALUES(?,?,?,?,?)' );
+		$result = $stmt->execute(array($userid,$name,$uri,$description,1));
+
+		return OC_DB::insertid();
+	}
+
+	public static function editAddressbook($id,$name,$description){
+		// Need these ones for checking uri
+		$addressbook = self::find($id);
+
+		if(is_null($name)){
+			$name = $addressbook['name'];
+		}
+		if(is_null($description)){
+			$description = $addressbook['description'];
+		}
+		
+		$stmt = OC_DB::prepare( 'UPDATE *PREFIX*contacts_addressbooks SET displayname=?,description=?, ctag=ctag+1 WHERE id=?' );
+		$result = $stmt->execute(array($name,$description,$id));
+
+		return true;
+	}
+
+	public static function touchCalendar($id){
+		$stmt = OC_DB::prepare( 'UPDATE *PREFIX*calendar_calendars SET ctag = ctag + 1 WHERE id = ?' );
+		$stmt->execute(array($id));
+
+		return true;
+	}
+
+	public static function deleteCalendar($id){
+		$stmt = OC_DB::prepare( 'DELETE FROM *PREFIX*calendar_calendars WHERE id = ?' );
+		$stmt->execute(array($id));
+		
+		$stmt = OC_DB::prepare( 'DELETE FROM *PREFIX*calendar_objects WHERE addressbookid = ?' );
+		$stmt->execute(array($id));
+
+		return true;
+	}
+
+	public static function allCalendarObjects($id){
+		$stmt = OC_DB::prepare( 'SELECT * FROM *PREFIX*calendar_objects WHERE calendarid = ?' );
+		$result = $stmt->execute(array($id));
+
+		$addressbooks = array();
+		while( $row = $result->fetchRow()){
+			$addressbooks[] = $row;
+		}
+
+		return $addressbooks;
+	}
+	
+	public static function findCalendarObject($id){
+		$stmt = OC_DB::prepare( 'SELECT * FROM *PREFIX*calendar_objects WHERE id = ?' );
+		$result = $stmt->execute(array($id));
+
+		return $result->fetchRow();
+	}
+
+	public static function findCalendarObjectWhereDAVDataIs($cid,$uri){
+		$stmt = OC_DB::prepare( 'SELECT * FROM *PREFIX*calendar_objects WHERE calendarid = ? AND uri = ?' );
+		$result = $stmt->execute(array($cid,$uri));
+
+		return $result->fetchRow();
+	}
+
+	public static function addCard($id,$data){
+		$object = Sabre_VObject_Reader::read($data);
+		list($startdate,$enddate,$summary,$repeating,$uid) = self::extractData($object);
+
+		$fn = null;
+		$uri = null;
+		$card = Sabre_VObject_Reader::read($data);
+		foreach($card->children as $property){
+			if($property->name == 'FN'){
+				$fn = $property->value;
+			}
+			elseif(is_null($uri) && $property->name == 'UID' ){
+				$uri = $property->value.'.vcf';
+			}
+		}
+		if(is_null($uri)) $uri = self::createUID().'.vcf';
+
+		$stmt = OC_DB::prepare( 'INSERT INTO *PREFIX*contacts_cards (addressbookid,fullname,carddata,uri,lastmodified) VALUES(?,?,?,?,?)' );
+		$result = $stmt->execute(array($id,$fn,$data,$uri,time()));
+
+		self::touchAddressbook($id);
+
+		return OC_DB::insertid();
+	}
+
+	public static function addCalendarObjectFromDAVData($id,$uri,$data){
+		$object = Sabre_VObject_Reader::read($data);
+		list($startdate,$enddate,$summary,$repeating,$uid) = self::extractData($object);
+
+		$stmt = OC_DB::prepare( 'INSERT INTO *PREFIX*calendar_objects (calendarid,objecttye,startdate,enddate,repeating,summary,calendardata,uri,lastmodified) VALUES(?,?,?,?,?,?,?,?,?)' );
+		$result = $stmt->execute(array($id,$object->name,(is_null($startdate)?null:$startdate->format('Y-m-d H:i:s')),(is_null($enddate)?null:$enddate->format('Y-m-d H:i:s')),$repeating,$summary,$data,$uri,time()));
+
+		self::touchCalendar($id);
+
+		return OC_DB::insertid();
+	}
+
+	public static function editCalendarObject($id, $data){
+		$oldobject = self::findCard($id);
+		
+		$object = Sabre_VObject_Reader::read($data);
+		list($startdate,$enddate,$summary,$repeating,$uid) = self::extractData($object);
+
+		$stmt = OC_DB::prepare( 'UPDATE *PREFIX*contacts_cards SET objecttye=?,startdate=?,enddate=?,repeating=?,summary=?,calendardata=?, lastmodified = ? WHERE id = ?' );
+		$result = $stmt->execute(array($object->name,(is_null($startdate)?null:$startdate->format('Y-m-d H:i:s')),(is_null($enddate)?null:$enddate->format('Y-m-d H:i:s')),$repeating,$summary,$data,time(),$id));
+
+		self::touchCalendar($id);
+
+		return true;
+	}
+
+	public static function editCalendarObjectFromDAVData($cid,$uri,$data){
+		$oldobject = self::findCardWhereDAVDataIs($cid,$uri);
+		
+		$object = Sabre_VObject_Reader::read($data);
+		list($startdate,$enddate,$summary,$repeating,$uid) = self::extractData($object);
+
+		$stmt = OC_DB::prepare( 'UPDATE *PREFIX*contacts_cards SET objecttye=?,startdate=?,enddate=?,repeating=?,summary=?,calendardata=?, lastmodified = ? WHERE id = ?' );
+		$result = $stmt->execute(array($object->name,(is_null($startdate)?null:$startdate->format('Y-m-d H:i:s')),(is_null($enddate)?null:$enddate->format('Y-m-d H:i:s')),$repeating,$summary,$data,time(),$oldobject['id']));
+
+		self::touchCalendar($oldobject['calendarid']);
+
+		return true;
+	}
+	
+	public static function deleteCalendarObject($id){
+		$stmt = OC_DB::prepare( 'DELETE FROM *PREFIX*calendar_objects WHERE id = ?' );
+		$stmt->execute(array($id));
+
+		return true;
+	}
+
+	public static function deleteCalendarObjectFromDAVData($cid,$uri){
+		$stmt = OC_DB::prepare( 'DELETE FROM *PREFIX*calendar_objects WHERE calendarid = ? AND uri=?' );
+		$stmt->execute(array($cid,$uri));
+
+		return true;
+	}
+	
+	public static function createURI($name,$existing){
+		$name = strtolower($name);
+		$newname = $name;
+		$i = 1;
+		while(in_array($newname,$existing)){
+			$newname = $name.$i;
+			$i = $i + 1;
+		}
+		return $newname;
+	}
+
+	public static function createUID(){
+		return substr(md5(rand().time()),0,10);
+	}
+	
+	public static function extractUserID($principaluri){
+		list($prefix,$userid) = Sabre_DAV_URLUtil::splitPath($principaluri);
+		return $userid;
+	}
+
+	protected static function extractData($object){
+		$return = array(null,null,'',false,null);
+		foreach($object->children as $property){
+			if($property->name == 'DTSTART'){
+				$return[0] = $property->getDateTime();
+			}
+			elseif($property->name == 'DTEND'){
+				$return[1] = $property->getDateTime();
+			}
+			elseif($property->name == 'SUMMARY'){
+				$return[2] = $property->value;
+			}
+			elseif($property->name == 'RRULE'){
+				$return[3] = true;
+			}
+			elseif($property->name == 'UID'){
+				$return[4] = $property->value;
+			}
+		}
+		return $return;
+	}
+}
diff --git a/apps/calendar/lib/hooks.php b/apps/calendar/lib/hooks.php
new file mode 100644
index 00000000000..60a8c23dac2
--- /dev/null
+++ b/apps/calendar/lib/hooks.php
@@ -0,0 +1,41 @@
+<?php
+/**
+ * ownCloud - Addressbook
+ *
+ * @author Jakob Sack
+ * @copyright 2011 Jakob Sack mail@jakobsack.de
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * This class contains all hooks.
+ */
+class OC_Calendar_Hooks{
+	/**
+	 * @brief Deletes all Addressbooks of a certain user
+	 * @param paramters parameters from postDeleteUser-Hook
+	 * @return array
+	 */
+	public function deleteUser($parameters) {
+		$calendars = OC_Calendar_Calendar::allCalendars($parameters['uid']);
+		
+		foreach($calendars as $calendar) {
+			OC_Calendar_Calendar::deleteCalendar($addressbook['id']);
+		}
+
+		return true;
+	}
+}
diff --git a/apps/calendar/libs/iCalcreator.php b/apps/calendar/libs/iCalcreator.php
new file mode 100755
index 00000000000..361bf58bc00
--- /dev/null
+++ b/apps/calendar/libs/iCalcreator.php
@@ -0,0 +1,7473 @@
+<?php
+/*********************************************************************************/
+/**
+ * iCalcreator class v2.6
+ * copyright (c) 2007-2008 Kjell-Inge Gustafsson kigkonsult
+ * www.kigkonsult.se/iCalcreator/index.php
+ * ical@kigkonsult.se
+ *
+ * Description:
+ * This file is a PHP implementation of RFC 2445.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+/*********************************************************************************/
+/*********************************************************************************/
+/*         A little setup                                                        */
+/*********************************************************************************/
+            /* your local language code */
+// define( 'ICAL_LANG', 'sv' );
+            // alt. autosetting
+/*
+$langstr     = $_SERVER['HTTP_ACCEPT_LANGUAGE'];
+$pos         = strpos( $langstr, ';' );
+if ($pos   !== false) {
+  $langstr   = substr( $langstr, 0, $pos );
+  $pos       = strpos( $langstr, ',' );
+  if ($pos !== false) {
+    $pos     = strpos( $langstr, ',' );
+    $langstr = substr( $langstr, 0, $pos );
+  }
+  define( 'ICAL_LANG', $langstr );
+}
+*/
+            /* only for phpversion 5.x, date management, default timezone setting */
+if( substr( phpversion(), 0, 1) >= '5' ) // && ( 'UTC' == date_default_timezone_get() )) {
+  date_default_timezone_set( 'Europe/Stockholm' );
+            /* version string, do NOT remove!! */
+define( 'ICALCREATOR_VERSION', 'iCalcreator 2.6' );
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ * vcalendar class
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.2.13 - 2007-12-30
+ */
+class vcalendar {
+            //  calendar property variables
+  var $calscale;
+  var $method;
+  var $prodid;
+  var $version;
+  var $xprop;
+            //  container for calendar components
+  var $components;
+            //  component config variables
+  var $allowEmpty;
+  var $unique_id;
+  var $language;
+  var $directory;
+  var $filename;
+  var $url;
+  var $delimiter;
+  var $nl;
+  var $format;
+            //  component internal variables
+  var $attributeDelimiter;
+  var $valueInit;
+            //  component xCal declaration container
+  var $xcaldecl;
+/*
+ * constructor for calendar object
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.2.13 - 2007-12-30
+ * @return void
+ */
+  function vcalendar () {
+    $this->_makeVersion();
+    $this->calscale   = null;
+    $this->method     = null;
+    $this->_makeUnique_id();
+    $this->prodid     = null;
+    $this->xprop      = array();
+/**
+ *   language = <Text identifying a language, as defined in [RFC 1766]>
+ */
+    if( defined( 'ICAL_LANG' ))
+      $this->setConfig( 'language', ICAL_LANG );
+    $this->setConfig( 'allowEmpty', TRUE );
+    $this->setConfig( 'nl',         "\n" );
+    $this->setConfig( 'format',     'iCal');
+    $this->directory  = null;
+    $this->filename   = null;
+    $this->url        = null;
+    $this->setConfig( 'delimiter',  DIRECTORY_SEPARATOR );
+    $this->xcaldecl   = array();
+    $this->components = array();
+  }
+/*********************************************************************************/
+/**
+ * Property Name: CALSCALE
+ */
+/**
+ * creates formatted output for calendar property calscale
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createCalscale() {
+    if( empty( $this->calscale )) return FALSE;
+    switch( $this->format ) {
+      case 'xcal':
+        return ' calscale="'.$this->calscale.'"'.$this->nl;
+        break;
+      default:
+        return 'CALSCALE:'.$this->calscale.$this->nl;
+        break;
+    }
+  }
+/**
+ * set calendar property calscale
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @param string $value
+ * @return void
+ */
+  function setCalscale( $value ) {
+    if( empty( $value )) return FALSE;
+    $this->calscale = $value;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: METHOD
+ */
+/**
+ * creates formatted output for calendar property method
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createMethod() {
+    if( empty( $this->method )) return FALSE;
+    switch( $this->format ) {
+      case 'xcal':
+        return ' method="'.$this->method.'"'.$this->nl;
+        break;
+      default:
+        return 'METHOD:'.$this->method.$this->nl;
+        break;
+    }
+  }
+/**
+ * set calendar property method
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-20-23
+ * @param string $value
+ * @return bool
+ */
+  function setMethod( $value ) {
+    if( empty( $value )) return FALSE;
+    $this->method = $value;
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: PRODID
+ *
+ *  The identifier is RECOMMENDED to be the identical syntax to the
+ * [RFC 822] addr-spec. A good method to assure uniqueness is to put the
+ * domain name or a domain literal IP address of the host on which.. .
+ */
+/**
+ * creates formatted output for calendar property prodid
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createProdid() {
+    if( !isset( $this->prodid ))
+      $this->_makeProdid();
+    switch( $this->format ) {
+      case 'xcal':
+        return ' prodid="'.$this->prodid.'"'.$this->nl;
+        break;
+      default:
+        return 'PRODID:'.$this->prodid.$this->nl;
+        break;
+    }
+  }
+/**
+ * make default value for calendar prodid
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 0.3.0 - 2006-08-10
+ * @return void
+ */
+  function _makeProdid() {
+    $this->prodid  = '-//'.$this->unique_id.'//NONSGML '.ICALCREATOR_VERSION.'//'.strtoupper( $this->language );
+  }
+/**
+ * Conformance: The property MUST be specified once in an iCalendar object.
+ * Description: The vendor of the implementation SHOULD assure that this
+ * is a globally unique identifier; using some technique such as an FPI
+ * value, as defined in [ISO 9070].
+ */
+/**
+ * make default unique_id for calendar prodid
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 0.3.0 - 2006-08-10
+ * @return void
+ */
+  function _makeUnique_id() {
+    $this->unique_id  = ( isset( $_SERVER['SERVER_NAME'] )) ? gethostbyname( $_SERVER['SERVER_NAME'] ) : 'localhost';
+  }
+/*********************************************************************************/
+/**
+ * Property Name: VERSION
+ *
+ * Description: A value of "2.0" corresponds to this memo.
+ */
+/**
+ * creates formatted output for calendar property version
+
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createVersion() {
+    if( empty( $this->version ))
+      $this->_makeVersion();
+    switch( $this->format ) {
+      case 'xcal':
+        return ' version="'.$this->version.'"'.$this->nl;
+        break;
+      default:
+        return 'VERSION:'.$this->version.$this->nl;
+        break;
+    }
+  }
+/**
+ * set default calendar version
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 0.3.0 - 2006-08-10
+ * @return void
+ */
+  function _makeVersion() {
+    $this->version = '2.0';
+  }
+/**
+ * set calendar version
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-23
+ * @param string $value
+ * @return void
+ */
+  function setVersion( $value ) {
+    if( empty( $value )) return FALSE;
+    $this->version = $value;
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: x-prop
+ */
+/**
+ * creates formatted output for calendar property x-prop, iCal format only
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.11 - 2008-11-03
+ * @return string
+ */
+  function createXprop() {
+    if( 'xcal' == $this->format )
+      return false;
+    if( 0 >= count( $this->xprop ))
+      return;
+    $output = null;
+    $toolbox = new calendarComponent();
+    $toolbox->setConfig( 'language', $this->getConfig( 'language' ));
+    $toolbox->setConfig( 'nl',       $this->getConfig( 'nl' ));
+    $toolbox->_createFormat(         $this->getConfig( 'format' ));
+    foreach( $this->xprop as $label => $xpropPart ) {
+      if( empty( $xpropPart['value'] )) {
+        $output  .= $toolbox->_createElement( $label );
+        continue;
+      }
+      $attributes = $toolbox->_createParams( $xpropPart['params'], array( 'LANGUAGE' ));
+      if( is_array( $xpropPart['value'] )) {
+        foreach( $xpropPart['value'] as $pix => $theXpart )
+          $xpropPart['value'][$pix] = $toolbox->_strrep( $theXpart );
+        $xpropPart['value']  = implode( ',', $xpropPart['value'] );
+      }
+      else
+        $xpropPart['value'] = $toolbox->_strrep( $xpropPart['value'] );
+      $output    .= $toolbox->_createElement( $label, $attributes, $xpropPart['value'] );
+    }
+    return $output;
+  }
+/**
+ * set calendar property x-prop
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.11 - 2008-11-04
+ * @param string $label
+ * @param string $value
+ * @param array $params optional
+ * @return bool
+ */
+  function setXprop( $label, $value, $params=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    if( empty( $label )) return FALSE;
+    $xprop           = array( 'value' => $value );
+    $toolbox         = new calendarComponent();
+    $xprop['params'] = $toolbox->_setParams( $params );
+    if( !is_array( $this->xprop )) $this->xprop = array();
+    $this->xprop[strtoupper( $label )] = $xprop;
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * delete calendar property value
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.5 - 2008-11-14
+ * @param mixed $propName, bool FALSE => X-property
+ * @param int @propix, optional, if specific property is wanted in case of multiply occurences
+ * @return bool, if successfull delete
+ */
+  function deleteProperty( $propName, $propix=FALSE ) {
+    $propName = ( $propName ) ? strtoupper( $propName ) : 'X-PROP';
+    if( !$propix )
+      $propix = ( isset( $this->propdelix[$propName] )) ? $this->propdelix[$propName] + 2 : 1;
+    $this->propdelix[$propName] = --$propix;
+    $return = FALSE;
+    switch( $propName ) {
+      case 'CALSCALE':
+        if( isset( $this->calscale )) {
+          $this->calscale = null;
+          $return = TRUE;
+        }
+        break;
+      case 'METHOD':
+        if( isset( $this->method )) {
+          $this->method   = null;
+          $return = TRUE;
+        }
+        break;
+      default:
+        $reduced = array();
+        if( $propName != 'X-PROP' ) {
+          if( !isset( $this->xprop[$propName] )) return FALSE;
+          foreach( $this->xprop as $k => $a ) {
+            if(( $k != $propName ) && !empty( $a ))
+              $reduced[$k] = $a;
+          }
+        }
+        else {
+          if( count( $this->xprop ) <= $propix )  return FALSE;
+          $xpropno = 0;
+          foreach( $this->xprop as $xpropkey => $xpropvalue ) {
+            if( $propix != $xpropno )
+              $reduced[$xpropkey] = $xpropvalue;
+            $xpropno++;
+          }
+        }
+        $this->xprop = $reduced;
+        return TRUE;
+    }
+    return $return;
+  }
+/**
+ * get calendar property value/params
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-02
+ * @param string $propName, optional
+ * @param int @propix, optional, if specific property is wanted in case of multiply occurences
+ * @param bool $inclParam=FALSE
+ * @return mixed
+ */
+  function getProperty( $propName=FALSE, $propix=FALSE, $inclParam=FALSE ) {
+    $propName = ( $propName ) ? strtoupper( $propName ) : 'X-PROP';
+    if( 'X-PROP' == $propName ) {
+      if( !$propix )
+        $propix = ( isset( $this->propix[$propName] )) ? $this->propix[$propName] + 2 : 1;
+      $this->propix[$propName] = --$propix;
+    }
+    switch( $propName ) {
+      case 'CALSCALE':
+        return ( !empty( $this->calscale )) ? $this->calscale : null;
+        break;
+      case 'METHOD':
+        return ( !empty( $this->method )) ? $this->method : null;
+        break;
+      case 'PRODID':
+        if( empty( $this->prodid ))
+          $this->_makeProdid();
+        return $this->prodid;
+        break;
+      case 'VERSION':
+        return ( !empty( $this->version )) ? $this->version : null;
+        break;
+      default:
+        if( $propName != 'X-PROP' ) {
+          if( !isset( $this->xprop[$propName] )) return FALSE;
+          return ( $inclParam ) ? array( $propName, $this->xprop[$propName] )
+                                : array( $propName, $this->xprop[$propName]['value'] );
+        }
+        else {
+          if( empty( $this->xprop )) return FALSE;
+          $xpropno = 0;
+          foreach( $this->xprop as $xpropkey => $xpropvalue ) {
+            if( $propix == $xpropno )
+              return ( $inclParam ) ? array( $xpropkey, $this->xprop[$xpropkey] )
+                                    : array( $xpropkey, $this->xprop[$xpropkey]['value'] );
+            else
+              $xpropno++;
+          }
+          return FALSE; // not found ??
+        }
+    }
+    return FALSE;
+  }
+/**
+ * general vcalendar property setting
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.2.13 - 2007-11-04
+ * @param mixed $args variable number of function arguments,
+ *                    first argument is ALWAYS component name,
+ *                    second ALWAYS component value!
+ * @return bool
+ */
+  function setProperty () {
+    $numargs    = func_num_args();
+    if( 1 > $numargs )
+      return FALSE;
+    $arglist    = func_get_args();
+    $arglist[0] = strtoupper( $arglist[0] );
+    switch( $arglist[0] ) {
+      case 'CALSCALE':
+        return $this->setCalscale( $arglist[1] );
+      case 'METHOD':
+        return $this->setMethod( $arglist[1] );
+      case 'VERSION':
+        return $this->setVersion( $arglist[1] );
+      default:
+        if( !isset( $arglist[1] )) $arglist[1] = null;
+        if( !isset( $arglist[2] )) $arglist[2] = null;
+        return $this->setXprop( $arglist[0], $arglist[1], $arglist[2] );
+    }
+    return FALSE;
+  }
+/*********************************************************************************/
+/**
+ * get vcalendar config values or * calendar components
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.10 - 2008-10-23
+ * @param string $config
+ * @return value
+ */
+  function getConfig( $config ) {
+    switch( strtoupper( $config )) {
+      case 'ALLOWEMPTY':
+        return $this->allowEmpty;
+        break;
+      case 'COMPSINFO':
+        unset( $this->compix );
+        $info = array();
+        foreach( $this->components as $cix => $component ) {
+          if( empty( $component )) continue;
+          unset( $component->propix );
+          $info[$cix]['ordno'] = $cix + 1;
+          $info[$cix]['type']  = $component->objName;
+          $info[$cix]['uid']   = $component->getProperty( 'uid' );
+          $info[$cix]['props'] = $component->getConfig( 'propinfo' );
+          $info[$cix]['sub']   = $component->getConfig( 'compsinfo' );
+          unset( $component->propix );
+        }
+        return $info;
+        break;
+      case 'DELIMITER':
+        return $this->delimiter;
+        break;
+      case 'DIRECTORY':
+        if( empty( $this->directory ))
+          $this->directory = '.';
+        return $this->directory;
+        break;
+      case 'DIRFILE':
+        return $this->getConfig( 'directory' ).$this->getConfig( 'delimiter' ).$this->getConfig( 'filename' );
+        break;
+      case 'FILEINFO':
+        return array( $this->getConfig( 'directory' )
+                    , $this->getConfig( 'filename' )
+                    , $this->getConfig( 'filesize' ));
+        break;
+      case 'FILENAME':
+        if( empty( $this->filename )) {
+          if( 'xcal' == $this->format )
+            $this->filename = date( 'YmdHis' ).'.xml'; // recommended xcs.. .
+          else
+            $this->filename = date( 'YmdHis' ).'.ics';
+        }
+        return $this->filename;
+        break;
+      case 'FILESIZE':
+        $size    = 0;
+        if( empty( $this->url )) {
+          $dirfile = $this->getConfig( 'dirfile' );
+          if( FALSE === ( $size = filesize( $dirfile )))
+            $size = 0;
+          clearstatcache();
+        }
+        return $size;
+        break;
+      case 'FORMAT':
+        return $this->format;
+        break;
+      case 'LANGUAGE':
+         /* get language for calendar component as defined in [RFC 1766] */
+        return $this->language;
+        break;
+      case 'NL':
+      case 'NEWLINECHAR':
+        return $this->nl;
+        break;
+      case 'UNIQUE_ID':
+        return $this->unique_id;
+        break;
+      case 'URL':
+        if( !empty( $this->url ))
+          return $this->url;
+        else
+          return FALSE;
+        break;
+    }
+  }
+/**
+ * general vcalendar config setting
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-24
+ * @param string $config
+ * @param string $value
+ * @return void
+ */
+  function setConfig( $config, $value ) {
+    $res = FALSE;
+    switch( strtoupper( $config )) {
+      case 'ALLOWEMPTY':
+        $this->allowEmpty = $value;
+        $subcfg  = array( 'ALLOWEMPTY' => $value );
+        $res = TRUE;
+        break;
+      case 'DELIMITER':
+        $this->delimiter = $value;
+        return TRUE;
+        break;
+      case 'DIRECTORY':
+        $value   = trim( $value );
+        $nl      = $this->getConfig('delimiter');
+        if( $nl == substr( $value, ( 0 - strlen( $nl ))))
+          $value = substr( $value, 0, ( strlen( $value ) - strlen( $nl )));
+        if( is_dir( $value )) {
+            /* local directory */
+          clearstatcache();
+          $this->directory = $value;
+          $this->url       = null;
+          return TRUE;
+        }
+        else
+          return FALSE;
+        break;
+      case 'FILENAME':
+        $value   = trim( $value );
+        if( !empty( $this->url )) {
+            /* remote directory+file - URL */
+          $this->filename = $value;
+          return TRUE;
+        }
+        $dirfile = $this->getConfig( 'directory' ).$this->getConfig( 'delimiter' ).$value;
+        if( file_exists( $dirfile )) {
+            /* local existing file */
+          if( is_readable( $dirfile ) || is_writable( $dirfile )) {
+            clearstatcache();
+            $this->filename = $value;
+            return TRUE;
+          }
+          else
+            return FALSE;
+        }
+        elseif( FALSE !== touch( $dirfile )) {
+            /* new local file created */
+          $this->filename = $value;
+          return TRUE;
+        }
+        else
+          return FALSE;
+        break;
+      case 'FORMAT':
+        $value   = trim( $value );
+        if( 'xcal' == strtolower( $value )) {
+          $this->format             = 'xcal';
+          $this->attributeDelimiter = $this->nl;
+          $this->valueInit          = null;
+        }
+        else {
+          $this->format             = null;
+          $this->attributeDelimiter = ';';
+          $this->valueInit          = ':';
+        }
+        $subcfg  = array( 'FORMAT' => $value );
+        $res = TRUE;
+        break;
+      case 'LANGUAGE':
+         // set language for calendar component as defined in [RFC 1766]
+        $value   = trim( $value );
+        $this->language = $value;
+        $subcfg  = array( 'LANGUAGE' => $value );
+        $res = TRUE;
+        break;
+      case 'NL':
+      case 'NEWLINECHAR':
+        $this->nl = $value;
+        $subcfg  = array( 'NL' => $value );
+        $res = TRUE;
+        break;
+      case 'UNIQUE_ID':
+        $value   = trim( $value );
+        $this->unique_id = $value;
+        $subcfg  = array( 'UNIQUE_ID' => $value );
+        $res = TRUE;
+        break;
+      case 'URL':
+            /* remote file - URL */
+        $value     = trim( $value );
+        $value     = str_replace( 'HTTP://',   'http://', $value );
+        $value     = str_replace( 'WEBCAL://', 'http://', $value );
+        $value     = str_replace( 'webcal://', 'http://', $value );
+        $this->url = $value;
+        $this->directory = null;
+        $parts     = pathinfo( $value );
+        return $this->setConfig( 'filename',  $parts['basename'] );
+        break;
+    }
+    if( !$res ) return FALSE;
+    if( isset( $subcfg ) && !empty( $this->components )) {
+      foreach( $subcfg as $cfgkey => $cfgvalue ) {
+        foreach( $this->components as $cix => $component ) {
+          $res = $component->setConfig( $cfgkey, $cfgvalue );
+          if( !$res )
+            break 2;
+          $this->components[$cix] = $component->copy(); // PHP4 compliant
+        }
+      }
+    }
+    return $res;
+  }
+/*********************************************************************************/
+/**
+ * add calendar component to container
+ *
+ * alias to setComponent
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 1.x.x - 2007-04-24
+ * @param object $component calendar component
+ * @return void
+ */
+  function addComponent( $component ) {
+    $this->setComponent( $component );
+  }
+/**
+ * delete calendar component from container
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.10 - 2008-08-05
+ * @param mixed $arg1 ordno / component type / component uid
+ * @param mixed $arg2 optional, ordno if arg1 = component type
+ * @return void
+ */
+  function deleteComponent( $arg1, $arg2=FALSE  ) {
+    $argType = $index = null;
+    if ( ctype_digit( (string) $arg1 )) {
+      $argType = 'INDEX';
+      $index   = (int) $arg1 - 1;
+    }
+    elseif(( strlen( $arg1 ) <= strlen( 'vfreebusy' )) && ( FALSE === strpos( $arg1, '@' ))) {
+      $argType = strtolower( $arg1 );
+      $index   = ( !empty( $arg2 ) && ctype_digit( (string) $arg2 )) ? (( int ) $arg2 - 1 ) : 0;
+    }
+    $cix1dC = 0;
+    foreach ( $this->components as $cix => $component) {
+      if( empty( $component )) continue;
+      unset( $component->propix );
+      if(( 'INDEX' == $argType ) && ( $index == $cix )) {
+        unset( $this->components[$cix] );
+        return TRUE;
+      }
+      elseif( $argType == $component->objName ) {
+        if( $index == $cix1dC ) {
+          unset( $this->components[$cix] );
+          return TRUE;
+        }
+        $cix1dC++;
+      }
+      elseif( !$argType && ($arg1 == $component->getProperty( 'uid' ))) {
+        unset( $this->components[$cix] );
+        return TRUE;
+      }
+    }
+    return FALSE;
+  }
+/**
+ * get calendar component from container
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.10 - 2008-08-06
+ * @param mixed $arg1 optional, ordno/component type/ component uid
+ * @param mixed $arg2 optional, ordno if arg1 = component type
+ * @return object
+ */
+  function getComponent( $arg1=FALSE, $arg2=FALSE ) {
+    $index = $argType = null;
+    if ( !$arg1 ) {
+      $argType = 'INDEX';
+      $index   = $this->compix['INDEX'] =
+        ( isset( $this->compix['INDEX'] )) ? $this->compix['INDEX'] + 1 : 1;
+    }
+    elseif ( ctype_digit( (string) $arg1 )) {
+      $argType = 'INDEX';
+      $index   = (int) $arg1;
+      unset( $this->compix );
+    }
+    elseif(( strlen( $arg1 ) <= strlen( 'vfreebusy' )) && ( FALSE === strpos( $arg1, '@' ))) {
+      unset( $this->compix['INDEX'] );
+      $argType = strtolower( $arg1 );
+      if( !$arg2 )
+        $index = $this->compix[$argType] =
+        ( isset( $this->compix[$argType] )) ? $this->compix[$argType] + 1 : 1;
+      else
+        $index = (int) $arg2;
+    }
+    $index  -= 1;
+    $ckeys =  array_keys( $this->components );
+    if( !empty( $index) && ( $index > end(  $ckeys )))
+      return FALSE;
+    $cix1gC = 0;
+    foreach ( $this->components as $cix => $component) {
+      if( empty( $component )) continue;
+      unset( $component->propix );
+      if(( 'INDEX' == $argType ) && ( $index == $cix ))
+        return $component->copy();
+      elseif( $argType == $component->objName ) {
+         if( $index == $cix1gC )
+           return $component->copy();
+         $cix1gC++;
+      }
+      elseif( !$argType && ($arg1 == $component->getProperty( 'uid' ))) {
+        unset( $component->propix );
+        return $component->copy();
+      }
+    }
+            /* not found.. . */
+    unset( $this->compix );
+    return FALSE;
+  }
+/**
+ * select components from calendar on date basis
+ *
+ * Ensure DTSTART is set for every component.
+ * No date controls occurs.
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.16 - 2008-10-18
+ * @param int $startY optional,  start Year, default current Year
+ * @param int $startM optional,  start Month, default current Month
+ * @param int $startD optional,  start Day, default current Day
+ * @param int $endY optional,    end Year, default $startY
+ * @param int $endY optional,    end Month, default $startM
+ * @param int $endY optional,    end Day, default $startD
+ * @param mixed $cType optional, calendar component type(-s), default FALSE=all else string/array type(-s)
+ * @param bool $flat optional,   FALSE (default) => output : array[Year][Month][Day][]
+ *                               TRUE => output : array[] (ignores split)
+ * @param bool $any optional,    TRUE (default) - select component that take place within period
+ *                               FALSE - only components that starts within period
+ * @param bool $split optional,  TRUE (default) - one component copy every day it take place during the
+ *                                       period (implies flat=FALSE)
+ *                               FALSE - one occurance of component only in output array</tr>
+ * @return array or FALSE
+ */
+  function selectComponents( $startY=FALSE, $startM=FALSE, $startD=FALSE, $endY=FALSE, $endM=FALSE, $endD=FALSE, $cType=FALSE, $flat=FALSE, $any=TRUE, $split=TRUE ) {
+            /* check  if empty calendar */
+    if( 0 >= count( $this->components )) return FALSE;
+            /* check default dates */
+    if( !$startY ) $startY = date( 'Y' );
+    if( !$startM ) $startM = date( 'm' );
+    if( !$startD ) $startD = date( 'd' );
+    $startDate = mktime( 0, 0, 0, $startM, $startD, $startY );
+    if( !$endY )   $endY   = $startY;
+    if( !$endM )   $endM   = $startM;
+    if( !$endD )   $endD   = $startD;
+    $endDate   = mktime( 23, 59, 59, $endM, $endD, $endY );
+            /* check component types */
+    $validTypes = array('vevent', 'vtodo', 'vjournal', 'vfreebusy' );
+    if( is_array( $cType )) {
+      foreach( $cType as $cix => $theType ) {
+        $cType[$cix] = $theType = strtolower( $theType );
+        if( !in_array( $theType, $validTypes ))
+          $cType[$cix] = 'vevent';
+      }
+      $cType = array_unique( $cType );
+    }
+    elseif( !empty( $cType )) {
+      $cType = strtolower( $cType );
+      if( !in_array( $cType, $validTypes ))
+        $cType = array( 'vevent' );
+      else
+        $cType = array( $cType );
+    }
+    else
+      $cType = $validTypes;
+    if( 0 >= count( $cType ))
+      $cType = $validTypes;
+            /* iterate components */
+    $result = array();
+    foreach ( $this->components as $cix => $component ) {
+      if( empty( $component )) continue;
+      unset( $component->propix, $start );
+            /* deselect unvalid type components */
+      if( !in_array( $component->objName, $cType )) continue;
+            /* deselect components without dtstart set */
+      if( FALSE === ( $start = $component->getProperty( 'dtstart' ))) continue;
+      $dtendExist = $dueExist = $durationExist = $endAllDayEvent = FALSE;
+      unset( $end, $startWdate, $endWdate, $rdurWsecs, $rdur, $exdatelist, $workstart, $workend ); // clean up
+      $startWdate = $component->_date2timestamp( $start );
+      $startDateFormat = ( isset( $start['hour'] )) ? 'Y-m-d H:i:s' : 'Y-m-d';
+            /* get end date from dtend/due/duration properties */
+      $end = $component->getProperty( 'dtend' );
+      if( !empty( $end )) {
+        $dtendExist = TRUE;
+        $endDateFormat = ( isset( $end['hour'] )) ? 'Y-m-d H:i:s' : 'Y-m-d';
+      }
+   // if( !empty($end))  echo 'selectComp 1 start='.implode('-',$start).' end='.implode('-',$end)."<br />\n"; // test ###
+      if( empty($end) && ( $component->objName == 'vtodo' )) {
+        $end = $component->getProperty( 'due' );
+        if( !empty( $end )) {
+          $dueExist = TRUE;
+          $endDateFormat = ( isset( $end['hour'] )) ? 'Y-m-d H:i:s' : 'Y-m-d';
+        }
+   // if( !empty($end))  echo 'selectComp 2 start='.implode('-',$start).' end='.implode('-',$end)."<br />\n"; // test ###
+      }
+      if( !empty( $end ) && !isset( $end['hour'] )) {
+          /* a DTEND without time part regards an event that ends the day before,
+             for an all-day event DTSTART=20071201 DTEND=20071202 (taking place 20071201!!! */
+        $endAllDayEvent = TRUE;
+        $endWdate = mktime( 23, 59, 59, $end['month'], ($end['day'] - 1), $end['year'] );
+        $end['year']  = date( 'Y', $endWdate );
+        $end['month'] = date( 'm', $endWdate );
+        $end['day']   = date( 'd', $endWdate );
+        $end['hour']  = 23;
+        $end['min']   = $end['sec'] = 59;
+   // if( !empty($end))  echo 'selectComp 3 start='.implode('-',$start).' end='.implode('-',$end)."<br />\n"; // test ###
+      }
+      if( empty( $end )) {
+        $end = $component->getProperty( 'duration', FALSE, FALSE, TRUE );// in dtend (array) format
+        if( !empty( $end ))
+          $durationExist = TRUE;
+   // if( !empty($end))  echo 'selectComp 4 start='.implode('-',$start).' end='.implode('-',$end)."<br />\n"; // test ###
+      }
+      if( empty( $end )) { // assume one day duration if missing end date
+        $end = array( 'year' => $start['year'], 'month' => $start['month'], 'day' => $start['day'], 'hour' => 23, 'min' => 59, 'sec' => 59 );
+   // if( isset($end))  echo 'selectComp 5 start='.implode('-',$start).' end='.implode('-',$end)."<br />\n"; // test ###
+      }
+      $endWdate = $component->_date2timestamp( $end );
+      if( $endWdate < $startWdate ) { // MUST be after start date!!
+        $end = array( 'year' => $start['year'], 'month' => $start['month'], 'day' => $start['day'], 'hour' => 23, 'min' => 59, 'sec' => 59 );
+        $endWdate = $component->_date2timestamp( $end );
+      }
+      $rdurWsecs  = $endWdate - $startWdate; // compute component duration in seconds
+      $rdur       = $component->_date2duration( $start, $end ); // compute component duration, array
+            /* make a list of optional exclude dates for component occurence from exrule and exdate */
+      $exdatelist = array();
+      $workstart  = $component->_timestamp2date(( $startDate - $rdurWsecs ), 6);
+      $workend    = $component->_timestamp2date(( $endDate + $rdurWsecs ), 6);
+      while( FALSE !== ( $exrule = $component->getProperty( 'exrule' )))    // check exrule
+        $component->_recur2date( $exdatelist, $exrule, $start, $workstart, $workend );
+      while( FALSE !== ( $exdate = $component->getProperty( 'exdate' ))) {  // check exdate
+        foreach( $exdate as $theExdate ) {
+          $exWdate = $component->_date2timestamp( $theExdate );
+          if((( $startDate - $rdurWsecs ) <= $exWdate ) && ( $endDate >= $exWdate ))
+            $exdatelist[$exWdate] = TRUE;
+        }
+      }
+            /* if 'any' components, check repeating components, removing all excluding dates */
+      if( TRUE === $any ) {
+            /* make a list of optional repeating dates for component occurence, rrule, rdate */
+        $recurlist = array();
+        while( FALSE !== ( $rrule = $component->getProperty( 'rrule' )))    // check rrule
+          $component->_recur2date( $recurlist, $rrule, $start, $workstart, $workend );
+        foreach( $recurlist as $recurkey => $recurvalue ) // key=match date as timestamp
+          $recurlist[$recurkey] = $rdurWsecs; // add duration in seconds
+        while( FALSE !== ( $rdate = $component->getProperty( 'rdate' ))) {  // check rdate
+          foreach( $rdate as $theRdate ) {
+            if( is_array( $theRdate ) && ( 2 == count( $theRdate )) &&  // all days within PERIOD
+                   array_key_exists( '0', $theRdate ) &&  array_key_exists( '1', $theRdate )) {
+              $rstart = $component->_date2timestamp( $theRdate[0] );
+              if(( $rstart < ( $startDate - $rdurWsecs )) || ( $rstart > $endDate ))
+                continue;
+              if( isset( $theRdate[1]['year'] )) // date-date period
+                $rend = $component->_date2timestamp( $theRdate[1] );
+              else {                             // date-duration period
+                $rend = $component->duration2date( $theRdate[0], $theRdate[1] );
+                $rend = $component->_date2timestamp( $rend );
+              }
+              if((( $startDate - $rdurWsecs ) <= $rstart ) && ( $endDate >= $rstart ))
+                $recurlist[$rstart] = ( $rstart - $rend ); // set start date + rdate duration in seconds
+            } // PERIOD end
+            else { // single date
+              $theRdate = $component->_date2timestamp( $theRdate );
+              if((( $startDate - $rdurWsecs ) <= $theRdate ) && ( $endDate >= $theRdate ))
+                $recurlist[$theRdate] = $rdurWsecs; // set start date + event duration in seconds
+            }
+          }
+        }
+        if( 0 < count( $recurlist )) {
+          ksort( $recurlist );
+          foreach( $recurlist as $recurkey => $durvalue ) {
+            if((( $startDate - $rdurWsecs ) > $recurkey ) || ( $endDate < $recurkey )) // not within period
+              continue;
+            if( isset( $exdatelist[$recurkey] )) // check excluded dates
+              continue;
+            if( $startWdate >= $recurkey ) // exclude component start date
+              continue;
+            $component2   = $component->copy();
+            $rstart       = $component2->_timestamp2date( $recurkey, 6);
+            $datevalue    = $rstart['month'].'/'.$rstart['day'].'/'.$rstart['year'];
+            if( isset( $start['hour'] ) || isset( $start['min'] ) || isset( $start['sec'] )) {
+              $datevalue .= ( isset( $rstart['hour'] )) ? ' '.$rstart['hour'] : ' 00';
+              $datevalue .= ( isset( $rstart['min'] ))  ? ':'.$rstart['min']  : ':00';
+              $datevalue .= ( isset( $rstart['sec'] ))  ? ':'.$rstart['sec']  : ':00';
+            }
+            $datestring = date( $startDateFormat, strtotime( $datevalue ));
+            if( isset( $start['tz'] ))
+              $datestring .= ' '.$start['tz'];
+            $component2->setProperty( 'X-CURRENT-DTSTART', $datestring );
+            $rend   = $component2->_timestamp2date(( $recurkey + $durvalue ), 6);
+            if( $dtendExist || $dueExist ) {
+              if( $endAllDayEvent ) {
+                $rend2 = mktime( 0, 0, 0, $rend['month'], ($rend['day'] + 1), $rend['year'] );
+                $datevalue  = date( 'm', $rend2 ).'/'.date( 'd', $rend2 ).'/'.date( 'Y', $rend2 );
+              }
+              else {
+                $datevalue  = $rend['month'].'/'.$rend['day'].'/'.$rend['year'];
+                if( isset( $end['hour'] ) || isset( $end['min'] ) || isset( $end['sec'] )) {
+                  $datevalue .= ( isset( $rend['hour'] )) ? ' '.$rend['hour'] : ' 00';
+                  $datevalue .= ( isset( $rend['min'] ))  ? ':'.$rend['min']  : ':00';
+                  $datevalue .= ( isset( $rend['sec'] ))  ? ':'.$rend['sec']  : ':00';
+                }
+              }
+              $datestring = date( $endDateFormat, strtotime( $datevalue ));
+              if( isset( $end['tz'] ))
+                $datestring .= ' '.$end['tz'];
+              if( $dtendExist )
+                $component2->setProperty( 'X-CURRENT-DTEND', $datestring );
+              elseif( $dueExist )
+                $component2->setProperty( 'X-CURRENT-DUE', $datestring );
+            }
+            $rend   = $component2->_date2timestamp( $rend );
+            $rstart = $recurkey;
+            /* add repeating components within valid dates to output array, only start date */
+            if( $flat )
+              $result[] = $component2->copy(); // copy to output
+            elseif( $split ) {
+              if( $rend > $endDate )
+                $rend = $endDate;
+              while( $rstart <= $rend ) { // iterate
+                $wd = getdate( $rstart );
+                if(( $rstart > $startDate ) &&      // date after dtstart
+                    !isset( $exdatelist[$rstart] )) // check exclude date
+                  $result[$wd['year']][$wd['mon']][$wd['mday']][] = $component2->copy(); // copy to output
+                $rstart += ( 24*60*60 ); // step one day
+              }
+            }
+            elseif(( $rstart >= $startDate ) &&     // date within period
+                  !isset( $exdatelist[$rstart] )) { // check exclude date
+              $wd = getdate( $rstart );
+              $result[$wd['year']][$wd['mon']][$wd['mday']][] = $component2->copy(); // copy to output
+            }
+          }
+        }
+            /* deselect components with startdate/enddate not within period */
+        if(( $endWdate < $startDate ) || ( $startWdate > $endDate )) continue;
+      }
+            /* deselect components with startdate not within period */
+      elseif(( $startWdate < $startDate ) || ( $startWdate > $endDate )) continue;
+            /* add selected components within valid dates to output array */
+      if( $flat )
+        $result[] = $component->copy(); // copy to output;
+      elseif( $split ) {
+        if( $endWdate > $endDate )
+          $endWdate = $endDate;     // use period end date
+        if( !isset( $exdatelist[$startWdate] ))  { // check excluded dates
+          if( $startWdate < $startDate )
+            $startWdate = $startDate; // use period start date
+          while( $startWdate <= $endWdate ) { // iterate
+            $wd = getdate( $startWdate );
+            $result[$wd['year']][$wd['mon']][$wd['mday']][] = $component->copy(); // copy to output
+            $startWdate += ( 24*60*60 ); // step one day
+          }
+        }
+      } // use component date
+      elseif( !isset( $exdatelist[$startWdate] ) &&   // check excluded dates
+            ( $startWdate >= $startDate )) {          // within period
+        $wd = getdate( $startWdate );
+        $result[$wd['year']][$wd['mon']][$wd['mday']][] = $component->copy(); // copy to output
+      }
+    }
+    if( 0 >= count( $result )) return FALSE;
+    elseif( !$flat ) {
+      foreach( $result as $y => $yeararr ) {
+        foreach( $yeararr as $m => $montharr ) {
+          ksort( $result[$y][$m] );
+        }
+        ksort( $result[$y] );
+      }
+      ksort( $result );
+    }
+    return $result;
+  }
+/**
+ * add calendar component to container
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.10 - 2008-08-06
+ * @param object $component calendar component
+ * @param mixed $arg1 optional, ordno/component type/ component uid
+ * @param mixed $arg2 optional, ordno if arg1 = component type
+ * @return void
+ */
+  function setComponent( $component, $arg1=FALSE, $arg2=FALSE  ) {
+    if( '' >= $component->getConfig( 'language'))
+      $component->setConfig( 'language',  $this->getConfig( 'language' ));
+    $component->setConfig( 'allowEmpty',  $this->getConfig( 'allowEmpty' ));
+    $component->setConfig( 'nl',          $this->getConfig( 'nl' ));
+    $component->setConfig( 'unique_id',   $this->getConfig( 'unique_id' ));
+    $component->setConfig( 'format',      $this->getConfig( 'format' ));
+    if( !in_array( $component->objName, array( 'valarm', 'vtimezone' ))) {
+      unset( $component->propix );
+            /* make sure dtstamp and uid is set */
+      $dummy1 = $component->getProperty( 'dtstamp' );
+      $dummy2 = $component->getProperty( 'uid' );
+    }
+    if( !$arg1 ) {
+      $this->components[] = $component->copy();
+      return TRUE;
+    }
+    $argType = $index = null;
+    if ( ctype_digit( (string) $arg1 )) {
+      $argType = 'INDEX';
+      $index   = (int) $arg1 - 1;
+    }
+    elseif(( strlen( $arg1 ) <= strlen( 'vfreebusy' )) && ( FALSE === strpos( $arg1, '@' ))) {
+      $argType = strtolower( $arg1 );
+      $index = ( ctype_digit( (string) $arg2 )) ? ((int) $arg2) - 1 : 0;
+    }
+    $cix1sC = 0;
+    foreach ( $this->components as $cix => $component2) {
+      if( empty( $component2 )) continue;
+      unset( $component2->propix );
+      if(( 'INDEX' == $argType ) && ( $index == $cix )) {
+        $this->components[$cix] = $component->copy();
+        return TRUE;
+      }
+      elseif( $argType == $component2->objName ) {
+        if( $index == $cix1sC ) {
+          $this->components[$cix] = $component->copy();
+          return TRUE;
+        }
+        $cix1sC++;
+      }
+      elseif( !$argType && ( $arg1 == $component2->getProperty( 'uid' ))) {
+        $this->components[$cix] = $component->copy();
+        return TRUE;
+      }
+    }
+            /* not found.. . insert last in chain anyway .. .*/
+    $this->components[] = $component->copy();
+    return TRUE;
+  }
+/**
+ * sort iCal compoments, only local date sort
+ *
+ * ascending sort on properties (if exist) x-current-dtstart, dtstart,
+ * x-current-dtend, dtend, x-current-due, due, duration, created, dtstamp, uid
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.10 - 2008-09-24
+ * @return sort param
+ *
+ */
+  function sort() {
+    if( is_array( $this->components )) {
+      $this->_sortkeys = array( 'year', 'month', 'day', 'hour', 'min', 'sec' );
+      usort( $this->components, array( $this, '_cmpfcn' ));
+    }
+  }
+  function _cmpfcn( $a, $b ) {
+    if( empty( $a ))                                   return -1;
+    if( empty( $b ))                                   return  1;
+    if(  'vtimezone' == $a->objName)                   return -1;
+    if(  'vtimezone' == $b->objName)                   return  1;
+    $astart = ( isset( $a->xprop['X-CURRENT-DTSTART']['value'] )) ? $a->_date_time_string( $a->xprop['X-CURRENT-DTSTART']['value'] ) : null;
+    if( empty( $astart ) && isset( $a->dtstart['value'] ))
+      $astart = & $a->dtstart['value'];
+    $bstart = ( isset( $b->xprop['X-CURRENT-DTSTART']['value'] )) ? $b->_date_time_string( $b->xprop['X-CURRENT-DTSTART']['value'] ) : null;
+    if( empty( $bstart ) && isset( $b->dtstart['value'] ))
+      $bstart = & $b->dtstart['value'];
+    if(     empty( $astart ))                          return -1;
+    elseif( empty( $bstart ))                          return  1;
+    foreach( $this->_sortkeys as $key ) {
+      if    ( empty( $astart[$key] ))                  return -1;
+      elseif( empty( $bstart[$key] ))                  return  1;
+      if    (        $astart[$key] == $bstart[$key])   continue;
+      if    (( (int) $astart[$key] ) < ((int) $bstart[$key] ))
+                                                       return -1;
+      elseif(( (int) $astart[$key] ) > ((int) $bstart[$key] ))
+                                                       return  1;
+    }
+    $c   = ( isset( $a->xprop['X-CURRENT-DTEND']['value'] )) ? $a->_date_time_string( $a->xprop['X-CURRENT-DTEND']['value'] ) : null;
+    if(     empty( $c ) && !empty( $a->dtend['value'] ))
+      $c = & $a->dtend['value'];
+    if(     empty( $c ) && isset( $a->xprop['X-CURRENT-DUE']['value'] ))
+      $c = $a->_date_time_string( $a->xprop['X-CURRENT-DUE']['value'] );
+    if(     empty( $c ) && !empty( $a->due['value'] ))
+      $c = & $a->due['value'];
+    if(     empty( $c ) && !empty( $a->duration['value'] ))
+      $c = $a->duration2date();
+    $d   = ( isset( $b->xprop['X-CURRENT-DTEND']['value'] )) ? $b->_date_time_string( $b->xprop['X-CURRENT-DTEND']['value'] ) : null;
+    if(     empty( $d ) && !empty( $b->dtend['value'] ))
+      $d = & $b->dtend['value'];
+    if(     empty( $d ) && isset( $b->xprop['X-CURRENT-DUE']['value'] ))
+      $d = $b->_date_time_string( $b->xprop['X-CURRENT-DUE']['value'] );
+    if(     empty( $d ) && !empty( $b->due['value'] ))
+      $d = & $b->due['value'];
+    if(     empty( $d ) && !empty( $b->duration['value'] ))
+      $d = $b->duration2date();
+    if(     empty( $c ))                               return -1;
+    elseif( empty( $d ))                               return  1;
+    foreach( $this->_sortkeys as $key ) {
+      if    ( !isset( $c[$key] ))                      return -1;
+      elseif( !isset( $d[$key] ))                      return  1;
+      if    (         $c[$key] == $d[$key] )           continue;
+      if    ((  (int) $c[$key] ) < ((int) $d[$key]))   return -1;
+      elseif((  (int) $c[$key] ) > ((int) $d[$key]))   return  1;
+    }
+    if( isset( $a->created['value'] ))
+     $e = & $a->created['value'];
+    else
+     $e = & $a->dtstamp['value'];
+    if( isset( $b->created['value'] ))
+      $f = & $b->created['value'];
+    else
+      $f = & $b->dtstamp['value'];
+    foreach( $this->_sortkeys as $key ) {
+      if(       !isset( $e[$key] ))                    return -1;
+      elseif(   !isset( $f[$key] ))                    return  1;
+      if    (           $e[$key] == $f[$key] )         continue;
+      if    ((    (int) $e[$key] ) < ((int) $f[$key])) return -1;
+      elseif((    (int) $e[$key] ) > ((int) $f[$key])) return  1;
+    }
+    if    ((            $a->uid['value'] ) <
+           (            $b->uid['value'] ))            return -1;
+    elseif((            $a->uid['value'] ) >
+           (            $b->uid['value'] ))            return  1;
+    return 0;
+  }
+/**
+ * parse iCal file into vcalendar, components, properties and parameters
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.10 - 2008-08-06
+ * @param string $filename optional filname (incl. opt. directory/path) or URL
+ * @return bool FALSE if error occurs during parsing
+ *
+ */
+  function parse( $filename=FALSE ) {
+    if( !$filename ) {
+            /* directory/filename previous set via setConfig directory+filename / url */
+      if( FALSE === ( $filename = $this->getConfig( 'url' )))
+        $filename = $this->getConfig( 'dirfile' );
+    }
+    elseif(( 'http://'   == strtolower( substr( $filename, 0, 7 ))) ||
+           ( 'webcal://' == strtolower( substr( $filename, 0, 9 ))))  {
+            /* remote file - URL */
+      $this->setConfig( 'URL', $filename );
+      if( !$filename = $this->getConfig( 'url' ))
+        return FALSE;                 /* err 2 */
+    }
+    else {
+            /* local directory/filename */
+      $parts = pathinfo( $filename );
+      if( !empty( $parts['dirname'] ) && ( '.' != $parts['dirname'] )) {
+        if( !$this->setConfig( 'directory', $parts['dirname'] ))
+          return FALSE;               /* err 3 */
+      }
+      if( !$this->setConfig( 'filename', $parts['basename'] ))
+        return FALSE;                 /* err 4 */
+    }
+    if( 'http://' != substr( $filename, 0, 7 )) {
+            /* local file error tests */
+      if( !is_file( $filename ))      /* err 5 */
+        return FALSE;
+      if( !is_readable( $filename ))
+        return FALSE;                 /* err 6 */
+      if( !filesize( $filename ))
+        return FALSE;                 /* err 7 */
+      clearstatcache();
+    }
+            /* READ FILE */
+    if( FALSE === ( $rows = file( $filename )))
+      return FALSE;                   /* err 1 */
+            /* identify BEGIN:VCALENDAR, MUST be first row */
+    if( 'BEGIN:VCALENDAR' != strtoupper( trim( $rows[0] )))
+      return FALSE;                   /* err 8 */
+            /* remove empty trailing lines */
+    while( '' == trim( $rows[count( $rows ) - 1] )) {
+      unset( $rows[count( $rows ) - 1] );
+      $rows  = array_values( $rows );
+    }
+            /* identify ending END:VCALENDAR row */
+    if( 'END:VCALENDAR'   != strtoupper( trim( $rows[count( $rows ) - 1] ))) {
+      return FALSE;                   /* err 9 */
+    }
+    if( 3 > count( $rows ))
+      return FALSE;                   /* err 10 */
+    $comp    = $subcomp = null;
+    $actcomp = & $this;
+    $nl      = $this->getConfig( 'nl' );
+    $calsync = 0;
+            /* identify components and update unparsed data within component */
+    foreach( $rows as $line ) {
+      if( '' == trim( $line ))
+        continue;
+      if( $nl == substr( $line, 0 - strlen( $nl )))
+        $line = substr( $line, 0, ( strlen( $line ) - strlen( $nl ))).'\n';
+      if( 'BEGIN:VCALENDAR' == strtoupper( substr( $line, 0, 15 ))) {
+        $calsync++;
+        continue;
+      }
+      elseif( 'END:VCALENDAR' == strtoupper( substr( $line, 0, 13 ))) {
+        $calsync--;
+        continue;
+      }
+      elseif( 1 != $calsync )
+        return FALSE;                 /* err 20 */
+      if( 'END:' == strtoupper( substr( $line, 0, 4 ))) {
+        if( null != $subcomp ) {
+          $comp->setComponent( $subcomp );
+          $subcomp = null;
+        }
+        else {
+          $this->setComponent( $comp );
+          $comp = null;
+        }
+        $actcomp = null;
+        continue;
+      } // end - if ( 'END:' ==.. .
+      elseif( 'BEGIN:' == strtoupper( substr( $line, 0, 6 ))) {
+        $line = str_replace( '\n', '', $line );
+        $compname = trim (strtoupper( substr( $line, 6 )));
+        if( null != $comp ) {
+          if( 'VALARM' == $compname )
+            $subcomp = new valarm();
+          elseif( 'STANDARD' == $compname )
+            $subcomp = new vtimezone( 'STANDARD' );
+          elseif( 'DAYLIGHT' == $compname )
+            $subcomp = new vtimezone( 'DAYLIGHT' );
+          else
+            return FALSE; /* err 6 */
+          $actcomp = & $subcomp;
+        }
+        else {
+          switch( $compname ) {
+            case 'VALARM':
+              $comp = new valarm();
+              break;
+            case 'VEVENT':
+              $comp = new vevent();
+              break;
+            case 'VFREEBUSY';
+              $comp = new vfreebusy();
+              break;
+            case 'VJOURNAL':
+              $comp = new vjournal();
+              break;
+            case 'VTODO':
+              $comp = new vtodo();
+              break;
+            case 'VTIMEZONE':
+              $comp = new vtimezone();
+              break;
+            default:
+              return FALSE; // err 7
+              break;
+          } // end - switch
+          $actcomp = & $comp;
+        }
+        continue;
+      } // end - elsif ( 'BEGIN:'.. .
+            /* update selected component with unparsed data */
+      $actcomp->unparsed[] = $line;
+    } // end - foreach( rows.. .
+            /* parse data for calendar (this) object */
+    if( is_array( $this->unparsed ) && ( 0 < count( $this->unparsed ))) {
+            /* concatenate property values spread over several lines */
+      $lastix    = -1;
+      $propnames = array( 'calscale','method','prodid','version','x-' );
+      $proprows  = array();
+      foreach( $this->unparsed as $line ) {
+        $newProp = FALSE;
+        foreach ( $propnames as $propname ) {
+          if( $propname == strtolower( substr( $line, 0, strlen( $propname )))) {
+            $newProp = TRUE;
+            break;
+          }
+        }
+        if( $newProp ) {
+          $newProp = FALSE;
+          $lastix++;
+          $proprows[$lastix]  = $line;
+        }
+        else {
+            /* remove line breaks */
+          if(( '\n' == substr( $proprows[$lastix], -2 )) &&
+             (  ' ' == substr( $line, 0, 1 ))) {
+            $proprows[$lastix] = substr( $proprows[$lastix], 0, strlen( $proprows[$lastix] ) - 2 );
+            $line = substr( $line, 1 );
+          }
+          $proprows[$lastix] .= $line;
+        }
+      }
+      $toolbox = new calendarComponent();
+      foreach( $proprows as $line ) {
+        if( '\n' == substr( $line, -2 ))
+          $line = substr( $line, 0, strlen( $line ) - 2 );
+            /* get propname */
+        $cix = $propname = null;
+        for( $cix=0; $cix < strlen( $line ); $cix++ ) {
+          if( in_array( $line{$cix}, array( ':', ';' )))
+            break;
+          else
+            $propname .= $line{$cix};
+        }
+            /* ignore version/prodid properties */
+        if( in_array( strtoupper( $propname ), array( 'VERSION', 'PRODID' )))
+          continue;
+        $line = substr( $line, $cix);
+            /* separate attributes from value */
+        $attr   = array();
+        $attrix = -1;
+        $strlen = strlen( $line );
+        for( $cix=0; $cix < $strlen; $cix++ ) {
+          if((       ':'   == $line{$cix} )             &&
+                   ( '://' != substr( $line, $cix, 3 )) &&
+             ( 'mailto:'   != strtolower( substr( $line, $cix - 6, 7 )))) {
+            $attrEnd = TRUE;
+            if(( $cix < ( $strlen - 4 )) &&
+                 ctype_digit( substr( $line, $cix+1, 4 ))) { // an URI with a (4pos) portnr??
+              for( $c2ix = $cix; 3 < $c2ix; $c2ix-- ) {
+                if( '://' == substr( $line, $c2ix - 2, 3 )) {
+                  $attrEnd = FALSE;
+                  break; // an URI with a portnr!!
+                }
+              }
+            }
+            if( $attrEnd) {
+              $line = substr( $line, $cix + 1 );
+              break;
+            }
+          }
+          if( ';' == $line{$cix} )
+            $attr[++$attrix] = null;
+          else
+            $attr[$attrix] .= $line{$cix};
+        }
+
+            /* make attributes in array format */
+        $propattr = array();
+        foreach( $attr as $attribute ) {
+          $attrsplit = explode( '=', $attribute, 2 );
+          if( 1 < count( $attrsplit ))
+            $propattr[$attrsplit[0]] = $attrsplit[1];
+          else
+            $propattr[] = $attribute;
+        }
+            /* update Property */
+        if( FALSE !== strpos( $line, ',' )) {
+          $content  = explode( ',', $line );
+          $clen     = count( $content );
+          for( $cix = 0; $cix < $clen; $cix++ ) {
+            if( "\\" == substr( $content[$cix], -1 )) {
+              $content[$cix] .= ','.$content[$cix + 1];
+              unset( $content[$cix + 1] );
+              $cix++;
+            }
+          }
+          if( 1 < count( $content )) {
+            foreach( $content as $cix => $contentPart )
+              $content[$cix] = $toolbox->_strunrep( $contentPart );
+            $this->setProperty( $propname, $content, $propattr );
+            continue;
+          }
+          else
+            $line = reset( $content );
+          $line = $toolbox->_strunrep( $line );
+        }
+        $this->setProperty( $propname, trim( $line ), $propattr );
+      } // end - foreach( $this->unparsed.. .
+    } // end - if( is_array( $this->unparsed.. .
+            /* parse Components */
+    if( is_array( $this->components ) && ( 0 < count( $this->components ))) {
+      for( $six = 0; $six < count( $this->components ); $six++ ) {
+        if( !empty( $this->components[$six] ))
+          $this->components[$six]->parse();
+      }
+    }
+    else
+      return FALSE;                   /* err 91 or something.. . */
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * creates formatted output for calendar object instance
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.10 - 2008-08-06
+ * @return string
+ */
+  function createCalendar() {
+    $calendarInit1 = $calendarInit2 = $calendarxCaldecl = $calendarStart = $calendar = null;
+    switch( $this->format ) {
+      case 'xcal':
+        $calendarInit1 = '<?xml version="1.0" encoding="UTF-8"?>'.$this->nl.
+                         '<!DOCTYPE iCalendar PUBLIC "-//IETF//DTD XCAL/iCalendar XML//EN"'.$this->nl.
+                         '"http://www.ietf.org/internet-drafts/draft-ietf-calsch-many-xcal-01.txt"';
+        $calendarInit2 = '>'.$this->nl;
+        $calendarStart = '<vcalendar';
+        break;
+      default:
+        $calendarStart = 'BEGIN:VCALENDAR'.$this->nl;
+        break;
+    }
+    $calendarStart .= $this->createCalscale();
+    $calendarStart .= $this->createMethod();
+    $calendarStart .= $this->createProdid();
+    $calendarStart .= $this->createVersion();
+    switch( $this->format ) {
+      case 'xcal':
+        $nlstrlen = strlen( $this->nl );
+        if( $this->nl == substr( $calendarStart, ( 0 - $nlstrlen )))
+          $calendarStart = substr( $calendarStart, 0, ( strlen( $calendarStart ) - $nlstrlen ));
+        $calendarStart .= '>'.$this->nl;
+        break;
+      default:
+        break;
+    }
+    $calendar .= $this->createXprop();
+    foreach( $this->components as $component ) {
+      if( empty( $component )) continue;
+      if( '' >= $component->getConfig( 'language'))
+        $component->setConfig( 'language',  $this->getConfig( 'language' ));
+      $component->setConfig( 'allowEmpty',  $this->getConfig( 'allowEmpty' ));
+      $component->setConfig( 'nl',          $this->getConfig( 'nl' ));
+      $component->setConfig( 'unique_id',   $this->getConfig( 'unique_id' ));
+      $component->setConfig( 'format',      $this->getConfig( 'format' ));
+      $calendar .= $component->createComponent( $this->xcaldecl );
+    }
+    if(( 0 < count( $this->xcaldecl )) && ( 'xcal' == $this->format )) { // xCal only
+      $calendarInit1 .= $this->nl.'['.$this->nl;
+      $old_xcaldecl = array();
+      foreach( $this->xcaldecl as $declix => $declPart ) {
+        if(( 0 < count( $old_xcaldecl)) &&
+           ( in_array( $declPart['uri'],      $old_xcaldecl['uri'] )) &&
+           ( in_array( $declPart['external'], $old_xcaldecl['external'] )))
+          continue; // no duplicate uri and ext. references
+        $calendarxCaldecl .= '<!';
+        foreach( $declPart as $declKey => $declValue ) {
+          switch( $declKey ) {                    // index
+            case 'xmldecl':                       // no 1
+              $calendarxCaldecl .= $declValue.' ';
+              break;
+            case 'uri':                           // no 2
+              $calendarxCaldecl .= $declValue.' ';
+              $old_xcaldecl['uri'][] = $declValue;
+              break;
+            case 'ref':                           // no 3
+              $calendarxCaldecl .= $declValue.' ';
+              break;
+            case 'external':                      // no 4
+              $calendarxCaldecl .= '"'.$declValue.'" ';
+              $old_xcaldecl['external'][] = $declValue;
+              break;
+            case 'type':                          // no 5
+              $calendarxCaldecl .= $declValue.' ';
+              break;
+            case 'type2':                         // no 6
+              $calendarxCaldecl .= $declValue;
+              break;
+          }
+        }
+        $calendarxCaldecl .= '>'.$this->nl;
+      }
+      $calendarInit2 = ']'.$calendarInit2;
+    }
+    switch( $this->format ) {
+      case 'xcal':
+        $calendar .= '</vcalendar>'.$this->nl;
+        break;
+      default:
+        $calendar .= 'END:VCALENDAR'.$this->nl;
+        break;
+    }
+    return $calendarInit1.$calendarxCaldecl.$calendarInit2.$calendarStart.$calendar;
+  }
+/**
+ * a HTTP redirect header is sent with created, updated and/or parsed calendar
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.2.12 - 2007-10-23
+ * @return redirect
+ */
+  function returnCalendar() {
+    $filename = $this->getConfig( 'filename' );
+    $output   = $this->createCalendar();
+    $filesize = strlen( $output );
+//    if( headers_sent( $filename, $linenum ))
+//      die( "Headers already sent in $filename on line $linenum\n" );
+    if( 'xcal' == $this->format )
+      header( 'Content-Type: application/calendar+xml; charset=utf-8' );
+    else
+      header( 'Content-Type: text/calendar; charset=utf-8' );
+    header( 'Content-Length: '.$filesize );
+    header( 'Content-Disposition: attachment; filename="'.$filename.'"' );
+    header( 'Cache-Control: max-age=10' );
+    echo $output;
+    die();
+  }
+/**
+ * save content in a file
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.2.12 - 2007-12-30
+ * @param string $directory optional
+ * @param string $filename optional
+ * @param string $delimiter optional
+ * @return bool
+ */
+  function saveCalendar( $directory=FALSE, $filename=FALSE, $delimiter=FALSE ) {
+    if( $directory )
+      $this->setConfig( 'directory', $directory );
+    if( $filename )
+      $this->setConfig( 'filename',  $filename );
+    if( $delimiter && ($delimiter != DIRECTORY_SEPARATOR ))
+      $this->setConfig( 'delimiter', $delimiter );
+    if( FALSE === ( $dirfile = $this->getConfig( 'url' )))
+      $dirfile = $this->getConfig( 'dirfile' );
+    $iCalFile = @fopen( $dirfile, 'w' );
+    if( $iCalFile ) {
+      if( FALSE === fwrite( $iCalFile, $this->createCalendar() ))
+        return FALSE;
+      fclose( $iCalFile );
+      return TRUE;
+    }
+    else
+      return FALSE;
+  }
+/**
+ * if recent version of calendar file exists (default one hour), an HTTP redirect header is sent
+ * else FALSE is returned
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.2.12 - 2007-10-28
+ * @param string $directory optional alt. int timeout
+ * @param string $filename optional
+ * @param string $delimiter optional
+ * @param int timeout optional, default 3600 sec
+ * @return redirect/FALSE
+ */
+  function useCachedCalendar( $directory=FALSE, $filename=FALSE, $delimiter=FALSE, $timeout=3600) {
+    if ( $directory && ctype_digit( (string) $directory ) && !$filename ) {
+      $timeout   = (int) $directory;
+      $directory = FALSE;
+    }
+    if( $directory )
+      $this->setConfig( 'directory', $directory );
+    if( $filename )
+      $this->setConfig( 'filename',  $filename );
+    if( $delimiter && ( $delimiter != DIRECTORY_SEPARATOR ))
+      $this->setConfig( 'delimiter', $delimiter );
+    $filesize    = $this->getConfig( 'filesize' );
+    if( 0 >= $filesize )
+      return FALSE;
+    $dirfile     = $this->getConfig( 'dirfile' );
+    if( time() - filemtime( $dirfile ) < $timeout) {
+      clearstatcache();
+      $dirfile   = $this->getConfig( 'dirfile' );
+      $filename  = $this->getConfig( 'filename' );
+//    if( headers_sent( $filename, $linenum ))
+//      die( "Headers already sent in $filename on line $linenum\n" );
+      if( 'xcal' == $this->format )
+        header( 'Content-Type: application/calendar+xml; charset=utf-8' );
+      else
+        header( 'Content-Type: text/calendar; charset=utf-8' );
+      header( 'Content-Length: '.$filesize );
+      header( 'Content-Disposition: attachment; filename="'.$filename.'"' );
+      header( 'Cache-Control: max-age=10' );
+      $fp = @$fopen( $dirfile, 'r' );
+      if( $fp ) {
+        fpassthru( $fp );
+        fclose( $fp );
+      }
+      die();
+    }
+    else
+      return FALSE;
+  }
+}
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ *  abstract class for calendar components
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.19 - 2008-10-12
+ */
+class calendarComponent {
+            //  component property variables
+  var $uid;
+  var $dtstamp;
+
+            //  component config variables
+  var $allowEmpty;
+  var $language;
+  var $nl;
+  var $unique_id;
+  var $format;
+  var $objName; // created automatically at instance creation
+            //  component internal variables
+  var $componentStart1;
+  var $componentStart2;
+  var $componentEnd1;
+  var $componentEnd2;
+  var $elementStart1;
+  var $elementStart2;
+  var $elementEnd1;
+  var $elementEnd2;
+  var $intAttrDelimiter;
+  var $attributeDelimiter;
+  var $valueInit;
+            //  component xCal declaration container
+  var $xcaldecl;
+/**
+ * constructor for calendar component object
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.19 - 2008-10-23
+ */
+  function calendarComponent() {
+    $this->objName         = ( isset( $this->timezonetype )) ?
+                          strtolower( $this->timezonetype )  :  get_class ( $this );
+    $this->uid             = array();
+    $this->dtstamp         = array();
+
+    $this->language        = null;
+    $this->nl              = null;
+    $this->unique_id       = null;
+    $this->format          = null;
+    $this->allowEmpty      = TRUE;
+    $this->xcaldecl        = array();
+
+    $this->_createFormat();
+    $this->_makeDtstamp();
+  }
+/*********************************************************************************/
+/**
+ * Property Name: ACTION
+ */
+/**
+ * creates formatted output for calendar component property action
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-22
+ * @return string
+ */
+  function createAction() {
+    if( empty( $this->action )) return FALSE;
+    if( empty( $this->action['value'] ))
+      return ( $this->getConfig( 'allowEmpty' )) ? $this->_createElement( 'ACTION' ) : FALSE;
+    $attributes = $this->_createParams( $this->action['params'] );
+    return $this->_createElement( 'ACTION', $attributes, $this->action['value'] );
+  }
+/**
+ * set calendar component property action
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param string $value  "AUDIO" / "DISPLAY" / "EMAIL" / "PROCEDURE"
+ * @param mixed $params
+ * @return bool
+ */
+  function setAction( $value, $params=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->action = array( 'value' => $value, 'params' => $this->_setParams( $params ));
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: ATTACH
+ */
+/**
+ * creates formatted output for calendar component property attach
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 0.9.7 - 2006-11-23
+ * @return string
+ */
+  function createAttach() {
+    if( empty( $this->attach )) return FALSE;
+    $output       = null;
+    foreach( $this->attach as $attachPart ) {
+      if(! empty( $attachPart['value'] )) {
+        $attributes = $this->_createParams( $attachPart['params'] );
+        $output    .= $this->_createElement( 'ATTACH', $attributes, $attachPart['value'] );
+      }
+      elseif( $this->getConfig( 'allowEmpty' )) $output .= $this->_createElement( 'ATTACH' );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property attach
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-06
+ * @param string $value
+ * @param array $params, optional
+ * @param integer $index, optional
+ * @return bool
+ */
+  function setAttach( $value, $params=FALSE, $index=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->_setMval( $this->attach, $value, $params, FALSE, $index );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: ATTENDEE
+ */
+/**
+ * creates formatted output for calendar component property attendee
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-09-23
+ * @return string
+ */
+  function createAttendee() {
+    if( empty( $this->attendee )) return FALSE;
+    $output = null;
+    foreach( $this->attendee as $attendeePart ) {                      // start foreach 1
+      if( empty( $attendeePart['value'] )) {
+        if( $this->getConfig( 'allowEmpty' ))
+          $output .= $this->_createElement( 'ATTENDEE' );
+        continue;
+      }
+      $attendee1 = $attendee2 = $attendeeLANG = $attendeeCN = null;
+      foreach( $attendeePart as $paramlabel => $paramvalue ) {         // start foreach 2
+        if( 'value' == $paramlabel )
+          $attendee2  .= 'MAILTO:'.$paramvalue;
+        elseif(( 'params' == $paramlabel ) && ( is_array( $paramvalue ))) { // start elseif
+          foreach( $paramvalue as $optparamlabel => $optparamvalue ) { // start foreach 3
+            $attendee11 = $attendee12 = null;
+            if( is_int( $optparamlabel )) {
+              $attendee1 .= $this->intAttrDelimiter.$optparamvalue;
+              continue;
+            }
+            switch( $optparamlabel ) {                                 // start switch
+              case 'CUTYPE':
+              case 'PARTSTAT':
+              case 'ROLE':
+              case 'RSVP':
+                $attendee1 .= $this->intAttrDelimiter.$optparamlabel.'="'.$optparamvalue.'"';
+                break;
+              case 'SENT-BY':
+                $attendee1 .= $this->intAttrDelimiter.'SENT-BY="MAILTO:'.$optparamvalue.'"';
+                break;
+              case 'MEMBER':
+                $attendee11 = $this->intAttrDelimiter.'MEMBER=';
+              case 'DELEGATED-TO':
+                $attendee11 = ( !$attendee11 ) ? $this->intAttrDelimiter.'DELEGATED-TO='   : $attendee11;
+              case 'DELEGATED-FROM':
+                $attendee11 = ( !$attendee11 ) ? $this->intAttrDelimiter.'DELEGATED-FROM=' : $attendee11;
+                foreach( $optparamvalue  as $cix => $calUserAddress ) {
+                  $attendee12 .= ( $cix ) ? ',' : null;
+                  $attendee12 .= '"MAILTO:'.$calUserAddress.'"';
+                }
+                $attendee1  .= $attendee11.$attendee12;
+                break;
+              case 'CN':
+                $attendeeCN .= $this->intAttrDelimiter.'CN="'.$optparamvalue.'"';
+                break;
+              case 'DIR':
+                $attendee1 .= $this->intAttrDelimiter.'DIR="'.$optparamvalue.'"';
+                break;
+              case 'LANGUAGE':
+                $attendeeLANG .= $this->intAttrDelimiter.'LANGUAGE='.$optparamvalue;
+                break;
+              default:
+                $attendee1 .= $this->intAttrDelimiter."$optparamlabel=$optparamvalue";
+                break;
+            }    // end switch
+          }      // end foreach 3
+        }        // end elseif
+      }          // end foreach 2
+      $output .= $this->_createElement( 'ATTENDEE', $attendee1.$attendeeLANG.$attendeeCN, $attendee2 );
+    }              // end foreach 1
+    return $output;
+  }
+/**
+ * set calendar component property attach
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-05
+ * @param string $value
+ * @param array $params, optional
+ * @param integer $index, optional
+ * @return bool
+ */
+  function setAttendee( $value, $params=FALSE, $index=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $value = str_replace ( 'MAILTO:', '', $value );
+    $value = str_replace ( 'mailto:', '', $value );
+    $params2 = array();
+    if( is_array($params )) {
+      $optarrays = array();
+      foreach( $params as $optparamlabel => $optparamvalue ) {
+        $optparamlabel = strtoupper( $optparamlabel );
+        switch( $optparamlabel ) {
+          case 'MEMBER':
+          case 'DELEGATED-TO':
+          case 'DELEGATED-FROM':
+            if( is_array( $optparamvalue )) {
+              foreach( $optparamvalue as $part ) {
+                $part = str_replace( 'MAILTO:', '', $part );
+                $part = str_replace( 'mailto:', '', $part );
+                if(( '"' == $part{0} ) && ( '"' == $part{strlen($part)-1} ))
+                  $part = substr( $part, 1, ( strlen($part)-2 ));
+                $optarrays[$optparamlabel][] = $part;
+              }
+            }
+            else {
+              $part = str_replace( 'MAILTO:', '', $optparamvalue );
+              $part = str_replace( 'mailto:', '', $part );
+              if(( '"' == $part{0} ) && ( '"' == $part{strlen($part)-1} ))
+                $part = substr( $part, 1, ( strlen($part)-2 ));
+              $optarrays[$optparamlabel][] = $part;
+            }
+            break;
+          default:
+            if( 'SENT-BY' ==  $optparamlabel ) {
+              $optparamvalue = str_replace( 'MAILTO:', '', $optparamvalue );
+              $optparamvalue = str_replace( 'mailto:', '', $optparamvalue );
+            }
+            if(( '"' == substr( $optparamvalue, 0, 1 )) &&
+               ( '"' == substr( $optparamvalue, -1 )))
+              $optparamvalue = substr( $optparamvalue, 1, ( strlen( $optparamvalue ) - 2 ));
+            $params2[$optparamlabel] = $optparamvalue;
+            break;
+        } // end switch( $optparamlabel.. .
+      } // end foreach( $optparam.. .
+      foreach( $optarrays as $optparamlabel => $optparams )
+        $params2[$optparamlabel] = $optparams;
+    }
+        // remove defaults
+    $this->_existRem( $params2, 'CUTYPE',   'INDIVIDUAL' );
+    $this->_existRem( $params2, 'PARTSTAT', 'NEEDS-ACTION' );
+    $this->_existRem( $params2, 'ROLE',     'REQ-PARTICIPANT' );
+    $this->_existRem( $params2, 'RSVP',     'FALSE' );
+        // check language setting
+    if( isset( $params2['CN' ] )) {
+      $lang = $this->getConfig( 'language' );
+      if( !isset( $params2['LANGUAGE' ] ) && !empty( $lang ))
+        $params2['LANGUAGE' ] = $lang;
+    }
+    $this->_setMval( $this->attendee, $value, $params2, FALSE, $index );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: CATEGORIES
+ */
+/**
+ * creates formatted output for calendar component property categories
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-22
+ * @return string
+ */
+  function createCategories() {
+    if( empty( $this->categories )) return FALSE;
+    $output = null;
+    foreach( $this->categories as $category ) {
+      if( empty( $category['value'] )) {
+        if ( $this->getConfig( 'allowEmpty' ))
+          $output .= $this->_createElement( 'CATEGORIES' );
+        continue;
+      }
+      $attributes = $this->_createParams( $category['params'], array( 'LANGUAGE' ));
+      if( is_array( $category['value'] )) {
+        foreach( $category['value'] as $cix => $categoryPart )
+          $category['value'][$cix] = $this->_strrep( $categoryPart );
+        $content  = implode( ',', $category['value'] );
+      }
+      else
+        $content  = $this->_strrep( $category['value'] );
+      $output    .= $this->_createElement( 'CATEGORIES', $attributes, $content );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property categories
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-06
+ * @param mixed $value
+ * @param array $params, optional
+ * @param integer $index, optional
+ * @return bool
+ */
+  function setCategories( $value, $params=FALSE, $index=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->_setMval( $this->categories, $value, $params, FALSE, $index );
+    return TRUE;
+ }
+/*********************************************************************************/
+/**
+ * Property Name: CLASS
+ */
+/**
+ * creates formatted output for calendar component property class
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createClass() {
+    if( empty( $this->class )) return FALSE;
+    if( empty( $this->class['value'] ))
+      return ( $this->getConfig( 'allowEmpty' )) ? $this->_createElement( 'CLASS' ) : FALSE;
+    $attributes = $this->_createParams( $this->class['params'] );
+    return $this->_createElement( 'CLASS', $attributes, $this->class['value'] );
+  }
+/**
+ * set calendar component property class
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param string $value "PUBLIC" / "PRIVATE" / "CONFIDENTIAL" / iana-token / x-name
+ * @param array $params optional
+ * @return bool
+ */
+  function setClass( $value, $params=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->class = array( 'value' => $value, 'params' => $this->_setParams( $params ));
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: COMMENT
+ */
+/**
+ * creates formatted output for calendar component property comment
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-22
+ * @return string
+ */
+  function createComment() {
+    if( empty( $this->comment )) return FALSE;
+    $output = null;
+    foreach( $this->comment as $commentPart ) {
+      if( empty( $commentPart['value'] )) {
+        if( $this->getConfig( 'allowEmpty' )) $output .= $this->_createElement( 'COMMENT' );
+        continue;
+      }
+      $attributes = $this->_createParams( $commentPart['params'], array( 'ALTREP', 'LANGUAGE' ));
+      $content    = $this->_strrep( $commentPart['value'] );
+      $output    .= $this->_createElement( 'COMMENT', $attributes, $content );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property comment
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-06
+ * @param string $value
+ * @param array $params, optional
+ * @param integer $index, optional
+ * @return bool
+ */
+  function setComment( $value, $params=FALSE, $index=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->_setMval( $this->comment, $value, $params, FALSE, $index );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: COMPLETED
+ */
+/**
+ * creates formatted output for calendar component property completed
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-22
+ * @return string
+ */
+  function createCompleted( ) {
+    if( empty( $this->completed )) return FALSE;
+    if( !isset( $this->completed['value']['year'] )  &&
+        !isset( $this->completed['value']['month'] ) &&
+        !isset( $this->completed['value']['day'] )   &&
+        !isset( $this->completed['value']['hour'] )  &&
+        !isset( $this->completed['value']['min'] )   &&
+        !isset( $this->completed['value']['sec'] ))
+      if( $this->getConfig( 'allowEmpty' ))
+        return $this->_createElement( 'COMPLETED' );
+      else return FALSE;
+    $formatted  = $this->_format_date_time( $this->completed['value'], 7 );
+    $attributes = $this->_createParams( $this->completed['params'] );
+    return $this->_createElement( 'COMPLETED', $attributes, $formatted );
+  }
+/**
+ * set calendar component property completed
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-23
+ * @param mixed $year
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param array $params optional
+ * @return bool
+ */
+  function setCompleted( $year, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $params=FALSE ) {
+    if( empty( $year )) {
+      if( $this->getConfig( 'allowEmpty' )) {
+        $this->completed = array( 'value' => null, 'params' => $this->_setParams( $params ));
+        return TRUE;
+      }
+      else
+        return FALSE;
+    }
+    $this->completed = $this->_setDate2( $year, $month, $day, $hour, $min, $sec, $params );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: CONTACT
+ */
+/**
+ * creates formatted output for calendar component property contact
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-23
+ * @return string
+ */
+  function createContact() {
+    if( empty( $this->contact )) return FALSE;
+    $output = null;
+    foreach( $this->contact as $contact ) {
+      if( !empty( $contact['value'] )) {
+        $attributes = $this->_createParams( $contact['params'], array( 'ALTREP', 'LANGUAGE' ));
+        $content    = $this->_strrep( $contact['value'] );
+        $output    .= $this->_createElement( 'CONTACT', $attributes, $content );
+      }
+      elseif( $this->getConfig( 'allowEmpty' )) $output .= $this->_createElement( 'CONTACT' );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property contact
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-05
+ * @param string $value
+ * @param array $params, optional
+ * @param integer $index, optional
+ * @return bool
+ */
+  function setContact( $value, $params=FALSE, $index=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->_setMval( $this->contact, $value, $params, FALSE, $index );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: CREATED
+ */
+/**
+ * creates formatted output for calendar component property created
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createCreated() {
+    if( empty( $this->created )) return FALSE;
+    $formatted  = $this->_format_date_time( $this->created['value'], 7 );
+    $attributes = $this->_createParams( $this->created['params'] );
+    return $this->_createElement( 'CREATED', $attributes, $formatted );
+  }
+/**
+ * set calendar component property created
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-23
+ * @param mixed $year optional
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param mixed $params optional
+ * @return bool
+ */
+  function setCreated( $year=FALSE, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $params=FALSE ) {
+    if( !isset( $year )) {
+      $year = date('Ymd\THis', mktime( date( 'H' ), date( 'i' ), date( 's' ) - date( 'Z'), date( 'm' ), date( 'd' ), date( 'Y' )));
+    }
+    $this->created = $this->_setDate2( $year, $month, $day, $hour, $min, $sec, $params );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: DESCRIPTION
+ */
+/**
+ * creates formatted output for calendar component property description
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-22
+ * @return string
+ */
+  function createDescription() {
+    if( empty( $this->description )) return FALSE;
+    $output       = null;
+    foreach( $this->description as $description ) {
+      if( !empty( $description['value'] )) {
+        $attributes = $this->_createParams( $description['params'], array( 'ALTREP', 'LANGUAGE' ));
+        $content    = $this->_strrep( $description['value'] );
+        $output    .= $this->_createElement( 'DESCRIPTION', $attributes, $content );
+      }
+      elseif( $this->getConfig( 'allowEmpty' )) $output .= $this->_createElement( 'DESCRIPTION' );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property description
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-05
+ * @param string $value
+ * @param array $params, optional
+ * @param integer $index, optional
+ * @return bool
+ */
+  function setDescription( $value, $params=FALSE, $index=FALSE ) {
+    if( empty( $value )) { if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE; }
+    $this->_setMval( $this->description, $value, $params, FALSE, $index );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: DTEND
+ */
+/**
+ * creates formatted output for calendar component property dtend
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createDtend() {
+    if( empty( $this->dtend )) return FALSE;
+    if( !isset( $this->dtend['value']['year'] )  &&
+        !isset( $this->dtend['value']['month'] ) &&
+        !isset( $this->dtend['value']['day'] )   &&
+        !isset( $this->dtend['value']['hour'] )  &&
+        !isset( $this->dtend['value']['min'] )   &&
+        !isset( $this->dtend['value']['sec'] ))
+      if( $this->getConfig( 'allowEmpty' ))
+        return $this->_createElement( 'DTEND' );
+      else return FALSE;
+    $formatted  = $this->_format_date_time( $this->dtend['value'] );
+    $attributes = $this->_createParams( $this->dtend['params'] );
+    return $this->_createElement( 'DTEND', $attributes, $formatted );
+  }
+/**
+ * set calendar component property dtend
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-23
+ * @param mixed $year
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param string $tz optional
+ * @param array params optional
+ * @return bool
+ */
+  function setDtend( $year, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $tz=FALSE, $params=FALSE ) {
+    if( empty( $year )) {
+      if( $this->getConfig( 'allowEmpty' )) {
+        $this->dtend = array( 'value' => null, 'params' => $this->_setParams( $params ));
+        return TRUE;
+      }
+      else
+        return FALSE;
+    }
+    $this->dtend = $this->_setDate( $year, $month, $day, $hour, $min, $sec, $tz, $params );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: DTSTAMP
+ */
+/**
+ * creates formatted output for calendar component property dtstamp
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.4 - 2008-03-07
+ * @return string
+ */
+  function createDtstamp() {
+    if( !isset( $this->dtstamp['value']['year'] )  &&
+        !isset( $this->dtstamp['value']['month'] ) &&
+        !isset( $this->dtstamp['value']['day'] )   &&
+        !isset( $this->dtstamp['value']['hour'] )  &&
+        !isset( $this->dtstamp['value']['min'] )   &&
+        !isset( $this->dtstamp['value']['sec'] ))
+      $this->_makeDtstamp();
+    $formatted  = $this->_format_date_time( $this->dtstamp['value'], 7 );
+    $attributes = $this->_createParams( $this->dtstamp['params'] );
+    return $this->_createElement( 'DTSTAMP', $attributes, $formatted );
+  }
+/**
+ * computes datestamp for calendar component object instance dtstamp
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 1.x.x - 2007-05-13
+ * @return void
+ */
+  function _makeDtstamp() {
+    $this->dtstamp['value'] = array( 'year'  => date( 'Y' )
+                                   , 'month' => date( 'm' )
+                                   , 'day'   => date( 'd' )
+                                   , 'hour'  => date( 'H' )
+                                   , 'min'   => date( 'i' )
+                                   , 'sec'   => date( 's' ) - date( 'Z' ));
+    $this->dtstamp['params'] = null;
+  }
+/**
+ * set calendar component property dtstamp
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-23
+ * @param mixed $year
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param array $params optional
+ * @return TRUE
+ */
+  function setDtstamp( $year, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $params=FALSE ) {
+    if( empty( $year ))
+      $this->_makeDtstamp();
+    else
+      $this->dtstamp = $this->_setDate2( $year, $month, $day, $hour, $min, $sec, $params );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: DTSTART
+ */
+/**
+ * creates formatted output for calendar component property dtstart
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.16 - 2008-10-26
+ * @return string
+ */
+  function createDtstart() {
+    if( empty( $this->dtstart )) return FALSE;
+    if( !isset( $this->dtstart['value']['year'] )  &&
+        !isset( $this->dtstart['value']['month'] ) &&
+        !isset( $this->dtstart['value']['day'] )   &&
+        !isset( $this->dtstart['value']['hour'] )  &&
+        !isset( $this->dtstart['value']['min'] )   &&
+        !isset( $this->dtstart['value']['sec'] ))
+    if( $this->getConfig( 'allowEmpty' ))
+      return $this->_createElement( 'DTSTART' );
+    else return FALSE;
+    if( in_array( $this->objName, array( 'vtimezone', 'standard', 'daylight' )))
+      unset( $this->dtstart['value']['tz'], $this->dtstart['params']['TZID'] );
+    $formatted  = $this->_format_date_time( $this->dtstart['value'] );
+    $attributes = $this->_createParams( $this->dtstart['params'] );
+    return $this->_createElement( 'DTSTART', $attributes, $formatted );
+  }
+/**
+ * set calendar component property dtstart
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.16 - 2008-11-04
+ * @param mixed $year
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param string $tz optional
+ * @param array $params optional
+ * @return bool
+ */
+  function setDtstart( $year, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $tz=FALSE, $params=FALSE ) {
+    if( empty( $year )) {
+      if( $this->getConfig( 'allowEmpty' )) {
+        $this->dtstart = array( 'value' => null, 'params' => $this->_setParams( $params ));
+        return TRUE;
+      }
+      else
+        return FALSE;
+    }
+    $this->dtstart = $this->_setDate( $year, $month, $day, $hour, $min, $sec, $tz, $params, 'dtstart' );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: DUE
+ */
+/**
+ * creates formatted output for calendar component property due
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-22
+ * @return string
+ */
+  function createDue() {
+    if( empty( $this->due )) return FALSE;
+    if( !isset( $this->due['value']['year'] )  &&
+        !isset( $this->due['value']['month'] ) &&
+        !isset( $this->due['value']['day'] )   &&
+        !isset( $this->due['value']['hour'] )  &&
+        !isset( $this->due['value']['min'] )   &&
+        !isset( $this->due['value']['sec'] ))
+      if( $this->getConfig( 'allowEmpty' ))
+        return $this->_createElement( 'DUE' );
+      else return FALSE;
+    $formatted  = $this->_format_date_time( $this->due['value'] );
+    $attributes = $this->_createParams( $this->due['params'] );
+    return $this->_createElement( 'DUE', $attributes, $formatted );
+  }
+/**
+ * set calendar component property due
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param mixed $year
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param array $params optional
+ * @return bool
+ */
+  function setDue( $year, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $tz=FALSE, $params=FALSE ) {
+    if( empty( $year )) {
+      if( $this->getConfig( 'allowEmpty' )) {
+        $this->due = array( 'value' => null, 'params' => $this->_setParams( $params ));
+        return TRUE;
+      }
+      else
+        return FALSE;
+    }
+    $this->due = $this->_setDate( $year, $month, $day, $hour, $min, $sec, $tz, $params );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: DURATION
+ */
+/**
+ * creates formatted output for calendar component property duration
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createDuration() {
+    if( empty( $this->duration )) return FALSE;
+    if( !isset( $this->duration['value']['week'] ) &&
+        !isset( $this->duration['value']['day'] )  &&
+        !isset( $this->duration['value']['hour'] ) &&
+        !isset( $this->duration['value']['min'] )  &&
+        !isset( $this->duration['value']['sec'] ))
+      if( $this->getConfig( 'allowEmpty' ))
+        return $this->_createElement( 'DURATION', array(), null );
+      else return FALSE;
+    $attributes = $this->_createParams( $this->duration['params'] );
+    return $this->_createElement( 'DURATION', $attributes, $this->_format_duration( $this->duration['value'] ));
+  }
+/**
+ * set calendar component property duration
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param mixed $week
+ * @param mixed $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param array $params optional
+ * @return bool
+ */
+  function setDuration( $week, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $params=FALSE ) {
+    if( empty( $week )) if( $this->getConfig( 'allowEmpty' )) $week = null; else return FALSE;
+    if( is_array( $week ) && ( 1 <= count( $week )))
+      $this->duration = array( 'value' => $this->_duration_array( $week ), 'params' => $this->_setParams( $day ));
+    elseif( is_string( $week ) && ( 3 <= strlen( trim( $week )))) {
+      $week = trim( $week );
+      if( in_array( substr( $week, 0, 1 ), array( '+', '-' )))
+        $week = substr( $week, 1 );
+      $this->duration = array( 'value' => $this->_duration_string( $week ), 'params' => $this->_setParams( $day ));
+    }
+    elseif( empty( $week ) && empty( $day ) && empty( $hour ) && empty( $min ) && empty( $sec ))
+      return FALSE;
+    else
+      $this->duration = array( 'value' => $this->_duration_array( array( $week, $day, $hour, $min, $sec )), 'params' => $this->_setParams( $params ));
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: EXDATE
+ */
+/**
+ * creates formatted output for calendar component property exdate
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-22
+ * @return string
+ */
+  function createExdate() {
+    if( empty( $this->exdate )) return FALSE;
+    $output = null;
+    foreach( $this->exdate as $ex => $theExdate ) {
+      if( empty( $theExdate['value'] )) {
+        if( $this->getConfig( 'allowEmpty' )) $output .= $this->_createElement( 'EXDATE' );
+        continue;
+      }
+      $content = $attributes = null;
+      foreach( $theExdate['value'] as $eix => $exdatePart ) {
+        $parno = count( $exdatePart );
+        $formatted = $this->_format_date_time( $exdatePart, $parno );
+        if( isset( $theExdate['params']['TZID'] ))
+          $formatted = str_replace( 'Z', '', $formatted);
+        if( 0 < $eix ) {
+          if( isset( $theExdate['value'][0]['tz'] )) {
+            if( ctype_digit( substr( $theExdate['value'][0]['tz'], -4 )) ||
+               ( 'Z' == $theExdate['value'][0]['tz'] )) {
+              if( 'Z' != substr( $formatted, -1 ))
+                $formatted .= 'Z';
+            }
+            else
+              $formatted = str_replace( 'Z', '', $formatted );
+          }
+          else
+            $formatted = str_replace( 'Z', '', $formatted );
+        }
+        $content .= ( 0 < $eix ) ? ','.$formatted : $formatted;
+      }
+      $attributes .= $this->_createParams( $theExdate['params'] );
+      $output .= $this->_createElement( 'EXDATE', $attributes, $content );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property exdate
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-05
+ * @param array exdates
+ * @param array $params, optional
+ * @param integer $index, optional
+ * @return bool
+ */
+  function setExdate( $exdates, $params=FALSE, $index=FALSE ) {
+    if( empty( $exdates )) {
+      if( $this->getConfig( 'allowEmpty' )) {
+        $this->_setMval( $this->exdate, null, $params, FALSE, $index );
+        return TRUE;
+      }
+      else
+        return FALSE;
+    }
+    $input  = array( 'params' => $this->_setParams( $params, array( 'VALUE' => 'DATE-TIME' )));
+            /* ev. check 1:st date and save ev. timezone **/
+    $this->_chkdatecfg( reset( $exdates ), $parno, $input['params'] );
+    $this->_existRem( $input['params'], 'VALUE', 'DATE-TIME' ); // remove default parameter
+    foreach( $exdates as $eix => $theExdate ) {
+      if( $this->_isArrayTimestampDate( $theExdate ))
+        $exdatea = $this->_timestamp2date( $theExdate, $parno );
+      elseif(  is_array( $theExdate ))
+        $exdatea = $this->_date_time_array( $theExdate, $parno );
+      elseif( 8 <= strlen( trim( $theExdate ))) // ex. 2006-08-03 10:12:18
+        $exdatea = $this->_date_time_string( $theExdate, $parno );
+      if( 3 == $parno )
+        unset( $exdatea['hour'], $exdatea['min'], $exdatea['sec'], $exdatea['tz'] );
+      elseif( isset( $exdatea['tz'] ))
+        $exdatea['tz'] = (string) $exdatea['tz'];
+      if(  isset( $input['params']['TZID'] ) ||
+         ( isset( $exdatea['tz'] ) && !$this->_isOffset( $exdatea['tz'] )) ||
+         ( isset( $input['value'][0] ) && ( !isset( $input['value'][0]['tz'] ))) ||
+         ( isset( $input['value'][0]['tz'] ) && !$this->_isOffset( $input['value'][0]['tz'] )))
+        unset( $exdatea['tz'] );
+      $input['value'][] = $exdatea;
+    }
+    if( 0 >= count( $input['value'] ))
+      return FALSE;
+    if( 3 == $parno ) {
+      $input['params']['VALUE'] = 'DATE';
+      unset( $input['params']['TZID'] );
+    }
+    $this->_setMval( $this->exdate, $input['value'], $input['params'], FALSE, $index );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: EXRULE
+ */
+/**
+ * creates formatted output for calendar component property exrule
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-22
+ * @return string
+ */
+  function createExrule() {
+    if( empty( $this->exrule )) return FALSE;
+    return $this->_format_recur( 'EXRULE', $this->exrule );
+  }
+/**
+ * set calendar component property exdate
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-05
+ * @param array $exruleset
+ * @param array $params, optional
+ * @param integer $index, optional
+ * @return bool
+ */
+  function setExrule( $exruleset, $params=FALSE, $index=FALSE ) {
+    if( empty( $exruleset )) if( $this->getConfig( 'allowEmpty' )) $exruleset = null; else return FALSE;
+    $this->_setMval( $this->exrule, $this->_setRexrule( $exruleset ), $params, FALSE, $index );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: FREEBUSY
+ */
+/**
+ * creates formatted output for calendar component property freebusy
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-22
+ * @return string
+ */
+  function createFreebusy() {
+    if( empty( $this->freebusy )) return FALSE;
+    $output = null;
+    foreach( $this->freebusy as $freebusyPart ) {
+      if( empty( $freebusyPart['value'] )) {
+        if( $this->getConfig( 'allowEmpty' )) $output .= $this->_createElement( 'FREEBUSY' );
+        continue;
+      }
+      $attributes = $content = null;
+      if( isset( $freebusyPart['value']['fbtype'] )) {
+        $attributes .= $this->intAttrDelimiter.'FBTYPE='.$freebusyPart['value']['fbtype'];
+        unset( $freebusyPart['value']['fbtype'] );
+        $freebusyPart['value'] = array_values( $freebusyPart['value'] );
+      }
+      else
+        $attributes .= $this->intAttrDelimiter.'FBTYPE=BUSY';
+      $attributes .= $this->_createParams( $freebusyPart['params'] );
+      $fno = 1;
+      $cnt = count( $freebusyPart['value']);
+      foreach( $freebusyPart['value'] as $periodix => $freebusyPeriod ) {
+        $formatted   = $this->_format_date_time( $freebusyPeriod[0] );
+        $content .= $formatted;
+        $content .= '/';
+        $cnt2 = count( $freebusyPeriod[1]);
+        if( array_key_exists( 'year', $freebusyPeriod[1] ))      // date-time
+          $cnt2 = 7;
+        elseif( array_key_exists( 'week', $freebusyPeriod[1] ))  // duration
+          $cnt2 = 5;
+        if(( 7 == $cnt2 )   &&    // period=  -> date-time
+            isset( $freebusyPeriod[1]['year'] )  &&
+            isset( $freebusyPeriod[1]['month'] ) &&
+            isset( $freebusyPeriod[1]['day'] )) {
+          $content .= $this->_format_date_time( $freebusyPeriod[1] );
+        }
+        else {                                  // period=  -> dur-time
+          $content .= $this->_format_duration( $freebusyPeriod[1] );
+        }
+        if( $fno < $cnt )
+          $content .= ',';
+        $fno++;
+      }
+      $output .= $this->_createElement( 'FREEBUSY', $attributes, $content );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property freebusy
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-05
+ * @param string $fbType
+ * @param array $fbValues
+ * @param array $params, optional
+ * @param integer $index, optional
+ * @return bool
+ */
+  function setFreebusy( $fbType, $fbValues, $params=FALSE, $index=FALSE ) {
+    if( empty( $fbValues )) {
+      if( $this->getConfig( 'allowEmpty' )) {
+        $this->_setMval( $this->freebusy, null, $params, FALSE, $index );
+        return TRUE;
+      }
+      else
+        return FALSE;
+    }
+    $fbType = strtoupper( $fbType );
+    if(( !in_array( $fbType, array( 'FREE', 'BUSY', 'BUSY-UNAVAILABLE', 'BUSY-TENTATIVE' ))) &&
+       ( 'X-' != substr( $fbType, 0, 2 )))
+      $fbType = 'BUSY';
+    $input = array( 'fbtype' => $fbType );
+    foreach( $fbValues as $fbPeriod ) {   // periods => period
+      $freebusyPeriod = array();
+      foreach( $fbPeriod as $fbMember ) { // pairs => singlepart
+        $freebusyPairMember = array();
+        if( is_array( $fbMember )) {
+          if( $this->_isArrayDate( $fbMember )) { // date-time value
+            $freebusyPairMember       = $this->_date_time_array( $fbMember, 7 );
+            $freebusyPairMember['tz'] = 'Z';
+          }
+          elseif( $this->_isArrayTimestampDate( $fbMember )) { // timestamp value
+            $freebusyPairMember       = $this->_timestamp2date( $fbMember['timestamp'], 7 );
+            $freebusyPairMember['tz'] = 'Z';
+          }
+          else {                                         // array format duration
+            $freebusyPairMember = $this->_duration_array( $fbMember );
+          }
+        }
+        elseif(( 3 <= strlen( trim( $fbMember ))) &&    // string format duration
+               ( in_array( $fbMember{0}, array( 'P', '+', '-' )))) {
+          if( 'P' != $fbMember{0} )
+            $fbmember = substr( $fbMember, 1 );
+          $freebusyPairMember = $this->_duration_string( $fbMember );
+        }
+        elseif( 8 <= strlen( trim( $fbMember ))) { // text date ex. 2006-08-03 10:12:18
+          $freebusyPairMember       = $this->_date_time_string( $fbMember, 7 );
+          $freebusyPairMember['tz'] = 'Z';
+        }
+        $freebusyPeriod[]   = $freebusyPairMember;
+      }
+      $input[]              = $freebusyPeriod;
+    }
+    $this->_setMval( $this->freebusy, $input, $params, FALSE, $index );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: GEO
+ */
+/**
+ * creates formatted output for calendar component property geo
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createGeo() {
+    if( empty( $this->geo )) return FALSE;
+    if( empty( $this->geo['value'] ))
+      return ( $this->getConfig( 'allowEmpty' )) ? $this->_createElement( 'GEO' ) : FALSE;
+    $attributes = $this->_createParams( $this->geo['params'] );
+    $content    = null;
+    $content   .= number_format( (float) $this->geo['value']['latitude'], 6, '.', '');
+    $content   .= ';';
+    $content   .= number_format( (float) $this->geo['value']['longitude'], 6, '.', '');
+    return $this->_createElement( 'GEO', $attributes, $content );
+  }
+/**
+ * set calendar component property geo
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param float $latitude
+ * @param float $longitude
+ * @param array $params optional
+ * @return bool
+ */
+  function setGeo( $latitude, $longitude, $params=FALSE ) {
+    if( !empty( $latitude ) && !empty( $longitude )) {
+      if( !is_array( $this->geo )) $this->geo = array();
+      $this->geo['value']['latitude']  = $latitude;
+      $this->geo['value']['longitude'] = $longitude;
+      $this->geo['params'] = $this->_setParams( $params );
+    }
+    elseif( $this->getConfig( 'allowEmpty' ))
+      $this->geo = array( 'value' => null, 'params' => $this->_setParams( $params ) );
+    else
+      return FALSE;
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: LAST-MODIFIED
+ */
+/**
+ * creates formatted output for calendar component property last-modified
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createLastModified() {
+    if( empty( $this->lastmodified )) return FALSE;
+    $attributes = $this->_createParams( $this->lastmodified['params'] );
+    $formatted  = $this->_format_date_time( $this->lastmodified['value'], 7 );
+    return $this->_createElement( 'LAST-MODIFIED', $attributes, $formatted );
+  }
+/**
+ * set calendar component property completed
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-23
+ * @param mixed $year optional
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param array $params optional
+ * @return boll
+ */
+  function setLastModified( $year=FALSE, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $params=FALSE ) {
+    if( empty( $year ))
+      $year = date('Ymd\THis', mktime( date( 'H' ), date( 'i' ), date( 's' ) - date( 'Z'), date( 'm' ), date( 'd' ), date( 'Y' )));
+    $this->lastmodified = $this->_setDate2( $year, $month, $day, $hour, $min, $sec, $params );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: LOCATION
+ */
+/**
+ * creates formatted output for calendar component property location
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-22
+ * @return string
+ */
+  function createLocation() {
+    if( empty( $this->location )) return FALSE;
+    if( empty( $this->location['value'] ))
+      return ( $this->getConfig( 'allowEmpty' )) ? $this->_createElement( 'LOCATION' ) : FALSE;
+    $attributes = $this->_createParams( $this->location['params'], array( 'ALTREP', 'LANGUAGE' ));
+    $content    = $this->_strrep( $this->location['value'] );
+    return $this->_createElement( 'LOCATION', $attributes, $content );
+  }
+/**
+ * set calendar component property location
+ '
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param string $value
+ * @param array params optional
+ * @return bool
+ */
+  function setLocation( $value, $params=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->location = array( 'value' => $value, 'params' => $this->_setParams( $params ));
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: ORGANIZER
+ */
+/**
+ * creates formatted output for calendar component property organizer
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createOrganizer() {
+    if( empty( $this->organizer )) return FALSE;
+    if( empty( $this->organizer['value'] ))
+      return ( $this->getConfig( 'allowEmpty' )) ? $this->_createElement( 'ORGANIZER' ) : FALSE;
+    $attributes = $this->_createParams( $this->organizer['params']
+                                      , array( 'CN', 'DIR', 'LANGUAGE', 'SENT-BY' ));
+    $content    = 'MAILTO:'.$this->organizer['value'];
+    return $this->_createElement( 'ORGANIZER', $attributes, $content );
+  }
+/**
+ * set calendar component property organizer
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param string $value
+ * @param array params optional
+ * @return bool
+ */
+  function setOrganizer( $value, $params=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $value = str_replace ( 'MAILTO:', '', $value );
+    $value = str_replace ( 'mailto:', '', $value );
+    $this->organizer = array( 'value' => $value, 'params' => $this->_setParams( $params ));
+    if( isset( $this->organizer['params']['SENT-BY'] )) {
+      if( 'MAILTO' == strtoupper( substr( $this->organizer['params']['SENT-BY'], 0, 6 )))
+        $this->organizer['params']['SENT-BY'] = substr( $this->organizer['params']['SENT-BY'], 7 );
+    }
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: PERCENT-COMPLETE
+ */
+/**
+ * creates formatted output for calendar component property percent-complete
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-22
+ * @return string
+ */
+  function createPercentComplete() {
+    if( empty( $this->percentcomplete )) return FALSE;
+    if( empty( $this->percentcomplete['value'] ))
+      return ( $this->getConfig( 'allowEmpty' )) ? $this->_createElement( 'PERCENT-COMPLETE' ) : FALSE;
+    $attributes = $this->_createParams( $this->percentcomplete['params'] );
+    return $this->_createElement( 'PERCENT-COMPLETE', $attributes, $this->percentcomplete['value'] );
+  }
+/**
+ * set calendar component property percent-complete
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param int $value
+ * @param array $params optional
+ * @return bool
+ */
+  function setPercentComplete( $value, $params=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->percentcomplete = array( 'value' => $value, 'params' => $this->_setParams( $params ));
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: PRIORITY
+ */
+/**
+ * creates formatted output for calendar component property priority
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createPriority() {
+    if( empty( $this->priority )) return FALSE;
+    if( empty( $this->priority['value'] ))
+      return ( $this->getConfig( 'allowEmpty' )) ? $this->_createElement( 'PRIORITY' ) : FALSE;
+    $attributes = $this->_createParams( $this->priority['params'] );
+    return $this->_createElement( 'PRIORITY', $attributes, $this->priority['value'] );
+  }
+/**
+ * set calendar component property priority
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param int $value
+ * @param array $params optional
+ * @return bool
+ */
+  function setPriority( $value, $params=FALSE  ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->priority = array( 'value' => $value, 'params' => $this->_setParams( $params ));
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: RDATE
+ */
+/**
+ * creates formatted output for calendar component property rdate
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.16 - 2008-10-26
+ * @return string
+ */
+  function createRdate() {
+    if( empty( $this->rdate )) return FALSE;
+    $utctime = ( in_array( $this->objName, array( 'vtimezone', 'standard', 'daylight' ))) ? TRUE : FALSE;
+    $output = null;
+    if( $utctime  )
+      unset( $this->rdate['params']['TZID'] );
+    foreach( $this->rdate as $theRdate ) {
+      if( empty( $theRdate['value'] )) {
+        if( $this->getConfig( 'allowEmpty' )) $output .= $this->_createElement( 'RDATE' );
+        continue;
+      }
+      if( $utctime  )
+        unset( $theRdate['params']['TZID'] );
+      $attributes = $this->_createParams( $theRdate['params'] );
+      $cnt = count( $theRdate['value'] );
+      $content = null;
+      $rno = 1;
+      foreach( $theRdate['value'] as $rpix => $rdatePart ) {
+        $contentPart = null;
+        if( is_array( $rdatePart ) &&
+            isset( $theRdate['params']['VALUE'] ) && ( 'PERIOD' == $theRdate['params']['VALUE'] )) { // PERIOD
+          if( $utctime )
+            unset( $rdatePart[0]['tz'] );
+          $formatted = $this->_format_date_time( $rdatePart[0]); // PERIOD part 1
+          if( $utctime || !empty( $theRdate['params']['TZID'] ))
+            $formatted = str_replace( 'Z', '', $formatted);
+          if( 0 < $rpix ) {
+            if( !empty( $rdatePart[0]['tz'] ) && $this->_isOffset( $rdatePart[0]['tz'] )) {
+              if( 'Z' != substr( $formatted, -1 )) $formatted .= 'Z';
+            }
+            else
+              $formatted = str_replace( 'Z', '', $formatted );
+          }
+          $contentPart .= $formatted;
+          $contentPart .= '/';
+          $cnt2 = count( $rdatePart[1]);
+          if( array_key_exists( 'year', $rdatePart[1] )) {
+            if( array_key_exists( 'hour', $rdatePart[1] ))
+              $cnt2 = 7;                                      // date-time
+            else
+              $cnt2 = 3;                                      // date
+          }
+          elseif( array_key_exists( 'week', $rdatePart[1] ))  // duration
+            $cnt2 = 5;
+          if(( 7 == $cnt2 )   &&    // period=  -> date-time
+              isset( $rdatePart[1]['year'] )  &&
+              isset( $rdatePart[1]['month'] ) &&
+              isset( $rdatePart[1]['day'] )) {
+            if( $utctime )
+              unset( $rdatePart[1]['tz'] );
+            $formatted = $this->_format_date_time( $rdatePart[1] ); // PERIOD part 2
+            if( $utctime || !empty( $theRdate['params']['TZID'] ))
+              $formatted = str_replace( 'Z', '', $formatted);
+            if( !empty( $rdatePart[0]['tz'] ) && $this->_isOffset( $rdatePart[0]['tz'] )) {
+              if( 'Z' != substr( $formatted, -1 )) $formatted .= 'Z';
+            }
+            else
+              $formatted = str_replace( 'Z', '', $formatted );
+           $contentPart .= $formatted;
+          }
+          else {                                  // period=  -> dur-time
+            $contentPart .= $this->_format_duration( $rdatePart[1] );
+          }
+        } // PERIOD end
+        else { // SINGLE date start
+          if( $utctime )
+            unset( $rdatePart['tz'] );
+          $formatted = $this->_format_date_time( $rdatePart);
+          if( $utctime || !empty( $theRdate['params']['TZID'] ))
+            $formatted = str_replace( 'Z', '', $formatted);
+          if( !$utctime && ( 0 < $rpix )) {
+            if( !empty( $theRdate['value'][0]['tz'] ) && $this->_isOffset( $theRdate['value'][0]['tz'] )) {
+              if( 'Z' != substr( $formatted, -1 ))
+                $formatted .= 'Z';
+            }
+            else
+              $formatted = str_replace( 'Z', '', $formatted );
+          }
+          $contentPart .= $formatted;
+        }
+        $content .= $contentPart;
+        if( $rno < $cnt )
+          $content .= ',';
+        $rno++;
+      }
+      $output    .= $this->_createElement( 'RDATE', $attributes, $content );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property rdate
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-07
+ * @param array $rdates
+ * @param array $params, optional
+ * @param integer $index, optional
+ * @return bool
+ */
+  function setRdate( $rdates, $params=FALSE, $index=FALSE ) {
+    if( empty( $rdates )) {
+      if( $this->getConfig( 'allowEmpty' )) {
+        $this->_setMval( $this->rdate, null, $params, FALSE, $index );
+        return TRUE;
+      }
+      else
+        return FALSE;
+    }
+    $input = array( 'params' => $this->_setParams( $params, array( 'VALUE' => 'DATE-TIME' )));
+    if( in_array( $this->objName, array( 'vtimezone', 'standard', 'daylight' ))) {
+      unset( $input['params']['TZID'] );
+      $input['params']['VALUE'] = 'DATE-TIME';
+    }
+            /*  check if PERIOD, if not set */
+    if((!isset( $input['params']['VALUE'] ) || !in_array( $input['params']['VALUE'], array( 'DATE', 'PERIOD' ))) &&
+          isset( $rdates[0] )    && is_array( $rdates[0] ) && ( 2 == count( $rdates[0] )) &&
+          isset( $rdates[0][0] ) &&    isset( $rdates[0][1] ) && !isset( $rdates[0]['timestamp'] ) &&
+    (( is_array( $rdates[0][0] ) && ( isset( $rdates[0][0]['timestamp'] ) ||
+                                      $this->_isArrayDate( $rdates[0][0] ))) ||
+                                    ( is_string( $rdates[0][0] ) && ( 8 <= strlen( trim( $rdates[0][0] )))))  &&
+     ( is_array( $rdates[0][1] ) || ( is_string( $rdates[0][1] ) && ( 3 <= strlen( trim( $rdates[0][1] ))))))
+      $input['params']['VALUE'] = 'PERIOD';
+            /* check 1:st date, upd. $parno (opt) and save ev. timezone **/
+    $date  = reset( $rdates );
+    if( isset( $input['params']['VALUE'] ) && ( 'PERIOD' == $input['params']['VALUE'] )) // PERIOD
+      $date  = reset( $date );
+    $this->_chkdatecfg( $date, $parno, $input['params'] );
+    if( in_array( $this->objName, array( 'vtimezone', 'standard', 'daylight' )))
+      unset( $input['params']['TZID'] );
+    $this->_existRem( $input['params'], 'VALUE', 'DATE-TIME' ); // remove default
+    foreach( $rdates as $rpix => $theRdate ) {
+      $inputa = null;
+      if( is_array( $theRdate )) {
+        if( isset( $input['params']['VALUE'] ) && ( 'PERIOD' == $input['params']['VALUE'] )) { // PERIOD
+          foreach( $theRdate as $rix => $rPeriod ) {
+            if( is_array( $rPeriod )) {
+              if( $this->_isArrayTimestampDate( $rPeriod ))      // timestamp
+                $inputab  = ( isset( $rPeriod['tz'] )) ? $this->_timestamp2date( $rPeriod, $parno ) : $this->_timestamp2date( $rPeriod, 6 );
+              elseif( $this->_isArrayDate( $rPeriod ))
+                $inputab  = ( 3 < count ( $rPeriod )) ? $this->_date_time_array( $rPeriod, $parno ) : $this->_date_time_array( $rPeriod, 6 );
+              elseif (( 1 == count( $rPeriod )) && ( 8 <= strlen( reset( $rPeriod ))))  // text-date
+                $inputab  = $this->_date_time_string( reset( $rPeriod ), $parno );
+              else                                               // array format duration
+                $inputab  = $this->_duration_array( $rPeriod );
+            }
+            elseif(( 3 <= strlen( trim( $rPeriod ))) &&          // string format duration
+                   ( in_array( $rPeriod{0}, array( 'P', '+', '-' )))) {
+              if( 'P' != $rPeriod{0} )
+                $rPeriod  = substr( $rPeriod, 1 );
+              $inputab    = $this->_duration_string( $rPeriod );
+            }
+            elseif( 8 <= strlen( trim( $rPeriod )))              // text date ex. 2006-08-03 10:12:18
+              $inputab    = $this->_date_time_string( $rPeriod, $parno );
+            if(  isset( $input['params']['TZID'] ) ||
+               ( isset( $inputab['tz'] )   && !$this->_isOffset( $inputab['tz'] )) ||
+               ( isset( $inputa[0] )       && ( !isset( $inputa[0]['tz'] )))       ||
+               ( isset( $inputa[0]['tz'] ) && !$this->_isOffset( $inputa[0]['tz'] )))
+              unset( $inputab['tz'] );
+            $inputa[]     = $inputab;
+          }
+        } // PERIOD end
+        elseif ( $this->_isArrayTimestampDate( $theRdate ))      // timestamp
+          $inputa = $this->_timestamp2date( $theRdate, $parno );
+        else                                                     // date[-time]
+          $inputa = $this->_date_time_array( $theRdate, $parno );
+      }
+      elseif( 8 <= strlen( trim( $theRdate )))                   // text date ex. 2006-08-03 10:12:18
+        $inputa       = $this->_date_time_string( $theRdate, $parno );
+      if( !isset( $input['params']['VALUE'] ) || ( 'PERIOD' != $input['params']['VALUE'] )) { // no PERIOD
+        if( 3 == $parno )
+          unset( $inputa['hour'], $inputa['min'], $inputa['sec'], $inputa['tz'] );
+        elseif( isset( $inputa['tz'] ))
+          $inputa['tz'] = (string) $inputa['tz'];
+        if(  isset( $input['params']['TZID'] ) ||
+           ( isset( $inputa['tz'] )            && !$this->_isOffset( $inputa['tz'] ))     ||
+           ( isset( $input['value'][0] )       && ( !isset( $input['value'][0]['tz'] )))  ||
+           ( isset( $input['value'][0]['tz'] ) && !$this->_isOffset( $input['value'][0]['tz'] )))
+          unset( $inputa['tz'] );
+      }
+      $input['value'][] = $inputa;
+    }
+    if( 3 == $parno ) {
+      $input['params']['VALUE'] = 'DATE';
+      unset( $input['params']['TZID'] );
+    }
+    $this->_setMval( $this->rdate, $input['value'], $input['params'], FALSE, $index );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: RECURRENCE-ID
+ */
+/**
+ * creates formatted output for calendar component property recurrence-id
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createRecurrenceid() {
+    if( empty( $this->recurrenceid )) return FALSE;
+    if( empty( $this->recurrenceid['value'] ))
+      return ( $this->getConfig( 'allowEmpty' )) ? $this->_createElement( 'RECURRENCE-ID' ) : FALSE;
+    $formatted  = $this->_format_date_time( $this->recurrenceid['value'] );
+    $attributes = $this->_createParams( $this->recurrenceid['params'] );
+    return $this->_createElement( 'RECURRENCE-ID', $attributes, $formatted );
+  }
+/**
+ * set calendar component property recurrence-id
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-23
+ * @param mixed $year
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param array $params optional
+ * @return bool
+ */
+  function setRecurrenceid( $year, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $tz=FALSE, $params=FALSE ) {
+    if( empty( $year )) {
+      if( $this->getConfig( 'allowEmpty' )) {
+        $this->recurrenceid = array( 'value' => null, 'params' => null );
+        return TRUE;
+      }
+      else
+        return FALSE;
+    }
+    $this->recurrenceid = $this->_setDate( $year, $month, $day, $hour, $min, $sec, $tz, $params );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: RELATED-TO
+ */
+/**
+ * creates formatted output for calendar component property related-to
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-23
+ * @return string
+ */
+  function createRelatedTo() {
+    if( empty( $this->relatedto )) return FALSE;
+    $output = null;
+    foreach( $this->relatedto as $relation ) {
+      if( empty( $relation['value'] )) {
+        if( $this->getConfig( 'allowEmpty' )) $output.= $this->_createElement( 'RELATED-TO', $this->_createParams( $relation['params'] ));
+        continue;
+      }
+      $attributes = $this->_createParams( $relation['params'] );
+      $content    = ( 'xcal' != $this->format ) ? '<' : '';
+      $content   .= $this->_strrep( $relation['value'] );
+      $content   .= ( 'xcal' != $this->format ) ? '>' : '';
+      $output    .= $this->_createElement( 'RELATED-TO', $attributes, $content );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property related-to
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-07
+ * @param float $relid
+ * @param array $params, optional
+ * @param index $index, optional
+ * @return bool
+ */
+  function setRelatedTo( $value, $params=FALSE, $index=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    if(( '<' == substr( $value, 0, 1 )) && ( '>' == substr( $value, -1 )))
+      $value = substr( $value, 1, ( strlen( $value ) - 2 ));
+    $this->_existRem( $params, 'RELTYPE', 'PARENT', TRUE ); // remove default
+    $this->_setMval( $this->relatedto, $value, $params, FALSE, $index );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: REPEAT
+ */
+/**
+ * creates formatted output for calendar component property repeat
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createRepeat() {
+    if( empty( $this->repeat )) return FALSE;
+    if( empty( $this->repeat['value'] ))
+      return ( $this->getConfig( 'allowEmpty' )) ? $this->_createElement( 'REPEAT' ) : FALSE;
+    $attributes = $this->_createParams( $this->repeat['params'] );
+    return $this->_createElement( 'REPEAT', $attributes, $this->repeat['value'] );
+  }
+/**
+ * set calendar component property transp
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param string $value
+ * @param array $params optional
+ * @return void
+ */
+  function setRepeat( $value, $params=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->repeat = array( 'value' => $value, 'params' => $this->_setParams( $params ));
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: REQUEST-STATUS
+ */
+/**
+ * creates formatted output for calendar component property request-status
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-23
+ * @return string
+ */
+  function createRequestStatus() {
+    if( empty( $this->requeststatus )) return FALSE;
+    $output = null;
+    foreach( $this->requeststatus as $rstat ) {
+      if( empty( $rstat['value']['statcode'] )) {
+        if( $this->getConfig( 'allowEmpty' )) $output .= $this->_createElement( 'REQUEST-STATUS' );
+        continue;
+      }
+      $attributes  = $this->_createParams( $rstat['params'], array( 'LANGUAGE' ));
+      $content     = number_format( (float) $rstat['value']['statcode'], 2, '.', '');
+      $content    .= ';'.$this->_strrep( $rstat['value']['text'] );
+      if( isset( $rstat['value']['extdata'] ))
+        $content  .= ';'.$this->_strrep( $rstat['value']['extdata'] );
+      $output     .= $this->_createElement( 'REQUEST-STATUS', $attributes, $content );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property request-status
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-05
+ * @param float $statcode
+ * @param string $text
+ * @param string $extdata, optional
+ * @param array $params, optional
+ * @param integer $index, optional
+ * @return bool
+ */
+  function setRequestStatus( $statcode, $text, $extdata=FALSE, $params=FALSE, $index=FALSE ) {
+    if( empty( $statcode ) || empty( $text )) if( $this->getConfig( 'allowEmpty' )) $statcode = $text = null; else return FALSE;
+    $input              = array( 'statcode' => $statcode, 'text' => $text );
+    if( $extdata )
+      $input['extdata'] = $extdata;
+    $this->_setMval( $this->requeststatus, $input, $params, FALSE, $index );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: RESOURCES
+ */
+/**
+ * creates formatted output for calendar component property resources
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-23
+ * @return string
+ */
+  function createResources() {
+    if( empty( $this->resources )) return FALSE;
+    $output = null;
+    foreach( $this->resources as $resource ) {
+      if( empty( $resource['value'] )) {
+        if( $this->getConfig( 'allowEmpty' )) $output .= $this->_createElement( 'RESOURCES' );
+        continue;
+      }
+      $attributes  = $this->_createParams( $resource['params'], array( 'ALTREP', 'LANGUAGE' ));
+      if( is_array( $resource['value'] )) {
+        foreach( $resource['value'] as $rix => $resourcePart )
+          $resource['value'][$rix] = $this->_strrep( $resourcePart );
+        $content   = implode( ',', $resource['value'] );
+      }
+      else
+        $content   = $this->_strrep( $resource['value'] );
+      $output     .= $this->_createElement( 'RESOURCES', $attributes, $content );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property recources
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-05
+ * @param mixed $value
+ * @param array $params, optional
+ * @param integer $index, optional
+ * @return bool
+ */
+  function setResources( $value, $params=FALSE, $index=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->_setMval( $this->resources, $value, $params, FALSE, $index );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: RRULE
+ */
+/**
+ * creates formatted output for calendar component property rrule
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createRrule() {
+    if( empty( $this->rrule )) return FALSE;
+    return $this->_format_recur( 'RRULE', $this->rrule );
+  }
+/**
+ * set calendar component property rrule
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-05
+ * @param array $rruleset
+ * @param array $params, optional
+ * @param integer $index, optional
+ * @return void
+ */
+  function setRrule( $rruleset, $params=FALSE, $index=FALSE ) {
+    if( empty( $rruleset )) if( $this->getConfig( 'allowEmpty' )) $rruleset = null; else return FALSE;
+    $this->_setMval( $this->rrule, $this->_setRexrule( $rruleset ), $params, FALSE, $index );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: SEQUENCE
+ */
+/**
+ * creates formatted output for calendar component property sequence
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createSequence() {
+    if( empty( $this->sequence )) return FALSE;
+    if( empty( $this->sequence['value'] ))
+      return ( $this->getConfig( 'allowEmpty' )) ? $this->_createElement( 'SEQUENCE' ) : FALSE;
+    $attributes = $this->_createParams( $this->sequence['params'] );
+    return $this->_createElement( 'SEQUENCE', $attributes, $this->sequence['value'] );
+  }
+/**
+ * set calendar component property sequence
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param int $value optional
+ * @param array $params optional
+ * @return bool
+ */
+  function setSequence( $value=FALSE, $params=FALSE ) {
+    if( empty( $value ))
+      $value = ( isset( $this->sequence['value'] ) && ( 0 < $this->sequence['value'] )) ? $this->sequence['value'] + 1 : 1;
+    $this->sequence = array( 'value' => $value, 'params' => $this->_setParams( $params ));
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: STATUS
+ */
+/**
+ * creates formatted output for calendar component property status
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createStatus() {
+    if( empty( $this->status )) return FALSE;
+    if( empty( $this->status['value'] ))
+      return ( $this->getConfig( 'allowEmpty' )) ? $this->_createElement( 'STATUS' ) : FALSE;
+    $attributes = $this->_createParams( $this->status['params'] );
+    return $this->_createElement( 'STATUS', $attributes, $this->status['value'] );
+  }
+/**
+ * set calendar component property status
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param string $value
+ * @param array $params optional
+ * @return bool
+ */
+  function setStatus( $value, $params=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->status = array( 'value' => $value, 'params' => $this->_setParams( $params ));
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: SUMMARY
+ */
+/**
+ * creates formatted output for calendar component property summary
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createSummary() {
+    if( empty( $this->summary )) return FALSE;
+    if( empty( $this->summary['value'] ))
+      return ( $this->getConfig( 'allowEmpty' )) ? $this->_createElement( 'SUMMARY' ) : FALSE;
+    $attributes = $this->_createParams( $this->summary['params'], array( 'ALTREP', 'LANGUAGE' ));
+    $content    = $this->_strrep( $this->summary['value'] );
+    return $this->_createElement( 'SUMMARY', $attributes, $content );
+  }
+/**
+ * set calendar component property summary
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param string $value
+ * @param string $params optional
+ * @return bool
+ */
+  function setSummary( $value, $params=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->summary = array( 'value' => $value, 'params' => $this->_setParams( $params ));
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: TRANSP
+ */
+/**
+ * creates formatted output for calendar component property transp
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createTransp() {
+    if( empty( $this->transp )) return FALSE;
+    if( empty( $this->transp['value'] ))
+      return ( $this->getConfig( 'allowEmpty' )) ? $this->_createElement( 'TRANSP' ) : FALSE;
+    $attributes = $this->_createParams( $this->transp['params'] );
+    return $this->_createElement( 'TRANSP', $attributes, $this->transp['value'] );
+  }
+/**
+ * set calendar component property transp
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param string $value
+ * @param string $params optional
+ * @return bool
+ */
+  function setTransp( $value, $params=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->transp = array( 'value' => $value, 'params' => $this->_setParams( $params ));
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: TRIGGER
+ */
+/**
+ * creates formatted output for calendar component property trigger
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.16 - 2008-10-21
+ * @return string
+ */
+  function createTrigger() {
+    if( empty( $this->trigger )) return FALSE;
+    if( empty( $this->trigger['value'] ))
+      return ( $this->getConfig( 'allowEmpty' )) ? $this->_createElement( 'TRIGGER' ) : FALSE;
+    $content = $attributes = null;
+    if( isset( $this->trigger['value']['year'] )   &&
+        isset( $this->trigger['value']['month'] )  &&
+        isset( $this->trigger['value']['day'] ))
+      $content      .= $this->_format_date_time( $this->trigger['value'] );
+    else {
+      if( TRUE !== $this->trigger['value']['relatedStart'] )
+        $attributes .= $this->intAttrDelimiter.'RELATED=END';
+      if( $this->trigger['value']['before'] )
+        $content    .= '-';
+      $content      .= $this->_format_duration( $this->trigger['value'] );
+    }
+    $attributes     .= $this->_createParams( $this->trigger['params'] );
+    return $this->_createElement( 'TRIGGER', $attributes, $content );
+  }
+/**
+ * set calendar component property trigger
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.16 - 2008-11-04
+ * @param mixed $year
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $week optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param bool $relatedStart optional
+ * @param bool $before optional
+ * @param array $params optional
+ * @return bool
+ */
+  function setTrigger( $year, $month=null, $day=null, $week=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $relatedStart=TRUE, $before=TRUE, $params=FALSE ) {
+    if( empty( $year ) && empty( $month ) && empty( $day ) && empty( $week ) && empty( $hour ) && empty( $min ) && empty( $sec ))
+      if( $this->getConfig( 'allowEmpty' )) {
+        $this->trigger = array( 'value' => null, 'params' => $this->_setParams( $params ) );
+        return TRUE;
+      }
+      else
+        return FALSE;
+    if( $this->_isArrayTimestampDate( $year )) { // timestamp
+      $params = $this->_setParams( $month );
+      $date   = $this->_timestamp2date( $year, 7 );
+      foreach( $date as $k => $v )
+        $$k = $v;
+    }
+    elseif( is_array( $year ) && ( is_array( $month ) || empty( $month ))) {
+      $params = $this->_setParams( $month );
+      if(!(array_key_exists( 'year',  $year ) &&   // exclude date-time
+           array_key_exists( 'month', $year ) &&
+           array_key_exists( 'day',   $year ))) {  // so this must be a duration
+        if( isset( $params['RELATED'] ) && ( 'END' == $params['RELATED'] ))
+          $relatedStart = FALSE;
+        else
+          $relatedStart = ( array_key_exists( 'relatedStart', $year ) && ( TRUE !== $year['relatedStart'] )) ? FALSE : TRUE;
+        $before         = ( array_key_exists( 'before', $year )       && ( TRUE !== $year['before'] ))       ? FALSE : TRUE;
+      }
+      $SSYY  = ( array_key_exists( 'year',  $year )) ? $year['year']  : null;
+      $month = ( array_key_exists( 'month', $year )) ? $year['month'] : null;
+      $day   = ( array_key_exists( 'day',   $year )) ? $year['day']   : null;
+      $week  = ( array_key_exists( 'week',  $year )) ? $year['week']  : null;
+      $hour  = ( array_key_exists( 'hour',  $year )) ? $year['hour']  : 0; //null;
+      $min   = ( array_key_exists( 'min',   $year )) ? $year['min']   : 0; //null;
+      $sec   = ( array_key_exists( 'sec',   $year )) ? $year['sec']   : 0; //null;
+      $year  = $SSYY;
+    }
+    elseif(is_string( $year ) && ( is_array( $month ) || empty( $month ))) {  // duration or date in a string
+      $params = $this->_setParams( $month );
+      if( in_array( $year{0}, array( 'P', '+', '-' ))) { // duration
+        $relatedStart = ( isset( $params['RELATED'] ) && ( 'END' == $params['RELATED'] )) ? FALSE : TRUE;
+        $before       = ( '-'  == $year{0} ) ? TRUE : FALSE;
+        if(     'P'  != $year{0} )
+          $year       = substr( $year, 1 );
+        $date         = $this->_duration_string( $year);
+      }
+      else   // date
+        $date    = $this->_date_time_string( $year, 7 );
+      unset( $year, $month, $day );
+      foreach( $date as $k => $v )
+        $$k = $v;
+    }
+    else // single values in function input parameters
+      $params = $this->_setParams( $params );
+    if( !empty( $year ) && !empty( $month ) && !empty( $day )) { // date
+      $params['VALUE'] = 'DATE-TIME';
+      $hour = ( $hour ) ? $hour : 0;
+      $min  = ( $min  ) ? $min  : 0;
+      $sec  = ( $sec  ) ? $sec  : 0;
+      $this->trigger = array( 'params' => $params );
+      $this->trigger['value'] = array( 'year'  => $year
+                                     , 'month' => $month
+                                     , 'day'   => $day
+                                     , 'hour'  => $hour
+                                     , 'min'   => $min
+                                     , 'sec'   => $sec
+                                     , 'tz'    => 'Z' );
+      return TRUE;
+    }
+    elseif(( empty( $year ) && empty( $month )) &&    // duration
+           (!empty( $week ) || !empty( $day ) || !empty( $hour ) || !empty( $min ) || !empty( $sec ))) {
+      unset( $params['RELATED'] ); // set at output creation (END only)
+      unset( $params['VALUE'] );   // 'DURATION' default
+      $this->trigger = array( 'params' => $params );
+      $relatedStart = ( FALSE !== $relatedStart ) ? TRUE : FALSE;
+      $before       = ( FALSE !== $before )       ? TRUE : FALSE;
+      $this->trigger['value']  = array( 'relatedStart' => $relatedStart
+                                      , 'before'       => $before );
+      if( !empty( $week )) $this->trigger['value']['week'] = $week;
+      if( !empty( $day  )) $this->trigger['value']['day']  = $day;
+      if( !empty( $hour )) $this->trigger['value']['hour'] = $hour;
+      if( !empty( $min  )) $this->trigger['value']['min']  = $min;
+      if( !empty( $sec  )) $this->trigger['value']['sec']  = $sec;
+      return TRUE;
+    }
+    return FALSE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: TZID
+ */
+/**
+ * creates formatted output for calendar component property tzid
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createTzid() {
+    if( empty( $this->tzid )) return FALSE;
+    if( empty( $this->tzid['value'] ))
+      return ( $this->getConfig( 'allowEmpty' )) ? $this->_createElement( 'TZID' ) : FALSE;
+    $attributes = $this->_createParams( $this->tzid['params'] );
+    return $this->_createElement( 'TZID', $attributes, $this->_strrep( $this->tzid['value'] ));
+  }
+/**
+ * set calendar component property tzid
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param string $value
+ * @param array $params optional
+ * @return bool
+ */
+  function setTzid( $value, $params=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->tzid = array( 'value' => $value, 'params' => $this->_setParams( $params ));
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * .. .
+ * Property Name: TZNAME
+ */
+/**
+ * creates formatted output for calendar component property tzname
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createTzname() {
+    if( empty( $this->tzname )) return FALSE;
+    $output = null;
+    foreach( $this->tzname as $theName ) {
+      if( !empty( $theName['value'] )) {
+        $attributes = $this->_createParams( $theName['params'], array( 'LANGUAGE' ));
+        $output    .= $this->_createElement( 'TZNAME', $attributes, $this->_strrep( $theName['value'] ));
+      }
+      elseif( $this->getConfig( 'allowEmpty' )) $output .= $this->_createElement( 'TZNAME' );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property tzname
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-05
+ * @param string $value
+ * @param string $params, optional
+ * @param integer $index, optional
+ * @return bool
+ */
+  function setTzname( $value, $params=FALSE, $index=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->_setMval( $this->tzname, $value, $params, FALSE, $index );
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: TZOFFSETFROM
+ */
+/**
+ * creates formatted output for calendar component property tzoffsetfrom
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createTzoffsetfrom() {
+    if( empty( $this->tzoffsetfrom )) return FALSE;
+    if( empty( $this->tzoffsetfrom['value'] ))
+      return ( $this->getConfig( 'allowEmpty' )) ? $this->_createElement( 'TZOFFSETFROM' ) : FALSE;
+    $attributes = $this->_createParams( $this->tzoffsetfrom['params'] );
+    return $this->_createElement( 'TZOFFSETFROM', $attributes, $this->tzoffsetfrom['value'] );
+  }
+/**
+ * set calendar component property tzoffsetfrom
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param string $value
+ * @param string $params optional
+ * @return bool
+ */
+  function setTzoffsetfrom( $value, $params=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->tzoffsetfrom = array( 'value' => $value, 'params' => $this->_setParams( $params ));
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: TZOFFSETTO
+ */
+/**
+ * creates formatted output for calendar component property tzoffsetto
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createTzoffsetto() {
+    if( empty( $this->tzoffsetto )) return FALSE;
+    if( empty( $this->tzoffsetto['value'] ))
+      return ( $this->getConfig( 'allowEmpty' )) ? $this->_createElement( 'TZOFFSETTO' ) : FALSE;
+    $attributes = $this->_createParams( $this->tzoffsetto['params'] );
+    return $this->_createElement( 'TZOFFSETTO', $attributes, $this->tzoffsetto['value'] );
+  }
+/**
+ * set calendar component property tzoffsetto
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param string $value
+ * @param string $params optional
+ * @return bool
+ */
+  function setTzoffsetto( $value, $params=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->tzoffsetto = array( 'value' => $value, 'params' => $this->_setParams( $params ));
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: TZURL
+ */
+/**
+ * creates formatted output for calendar component property tzurl
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createTzurl() {
+    if( empty( $this->tzurl )) return FALSE;
+    if( empty( $this->tzurl['value'] ))
+      return ( $this->getConfig( 'allowEmpty' )) ? $this->_createElement( 'TZURL' ) : FALSE;
+    $attributes = $this->_createParams( $this->tzurl['params'] );
+    return $this->_createElement( 'TZURL', $attributes, $this->tzurl['value'] );
+  }
+/**
+ * set calendar component property tzurl
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param string $value
+ * @param string $params optional
+ * @return boll
+ */
+  function setTzurl( $value, $params=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->tzurl = array( 'value' => $value, 'params' => $this->_setParams( $params ));
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: UID
+ */
+/**
+ * creates formatted output for calendar component property uid
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createUid() {
+    if( 0 >= count( $this->uid ))
+      $this->_makeuid();
+    $attributes = $this->_createParams( $this->uid['params'] );
+    return $this->_createElement( 'UID', $attributes, $this->uid['value'] );
+  }
+/**
+ * create an unique id for this calendar component object instance
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.2.7 - 2007-09-04
+ * @return void
+ */
+  function _makeUid() {
+    $date   = date('Ymd\THisT');
+    $unique = substr(microtime(), 2, 4);
+    $base   = 'aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPrRsStTuUvVxXuUvVwWzZ1234567890';
+    $start  = 0;
+    $end    = strlen( $base ) - 1;
+    $length = 6;
+    $str    = null;
+    for( $p = 0; $p < $length; $p++ )
+      $unique .= $base{mt_rand( $start, $end )};
+    $this->uid = array( 'params' => null );
+    $this->uid['value']  = $date.'-'.$unique.'@'.$this->getConfig( 'unique_id' );
+  }
+/**
+ * set calendar component property uid
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param string $value
+ * @param string $params optional
+ * @return bool
+ */
+  function setUid( $value, $params=FALSE ) {
+    if( empty( $value )) return FALSE; // no allowEmpty check here !!!!
+    $this->uid = array( 'value' => $value, 'params' => $this->_setParams( $params ));
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: URL
+ */
+/**
+ * creates formatted output for calendar component property url
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-21
+ * @return string
+ */
+  function createUrl() {
+    if( empty( $this->url )) return FALSE;
+    if( empty( $this->url['value'] ))
+      return ( $this->getConfig( 'allowEmpty' )) ? $this->_createElement( 'URL' ) : FALSE;
+    $attributes = $this->_createParams( $this->url['params'] );
+    return $this->_createElement( 'URL', $attributes, $this->url['value'] );
+  }
+/**
+ * set calendar component property url
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-11-04
+ * @param string $value
+ * @param string $params optional
+ * @return bool
+ */
+  function setUrl( $value, $params=FALSE ) {
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $this->url = array( 'value' => $value, 'params' => $this->_setParams( $params ));
+    return TRUE;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: x-prop
+ */
+/**
+ * creates formatted output for calendar component property x-prop
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.11 - 2008-10-22
+ * @return string
+ */
+  function createXprop() {
+    if( empty( $this->xprop )) return FALSE;
+    $output = null;
+    foreach( $this->xprop as $label => $xpropPart ) {
+      if( empty( $xpropPart['value'] )) {
+        if( $this->getConfig( 'allowEmpty' )) $output .= $this->_createElement( $label );
+        continue;
+      }
+      $attributes = $this->_createParams( $xpropPart['params'], array( 'LANGUAGE' ));
+      if( is_array( $xpropPart['value'] )) {
+        foreach( $xpropPart['value'] as $pix => $theXpart )
+          $xpropPart['value'][$pix] = $this->_strrep( $theXpart );
+        $xpropPart['value']  = implode( ',', $xpropPart['value'] );
+      }
+      else
+        $xpropPart['value'] = $this->_strrep( $xpropPart['value'] );
+      $output    .= $this->_createElement( $label, $attributes, $xpropPart['value'] );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property x-prop
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+	* @since 2.4.11 - 2008-11-04
+ * @param string $label
+ * @param mixed $value
+ * @param array $params optional
+ * @return bool
+ */
+  function setXprop( $label, $value, $params=FALSE ) {
+    if( empty( $label )) return;
+    if( empty( $value )) if( $this->getConfig( 'allowEmpty' )) $value = null; else return FALSE;
+    $xprop           = array( 'value' => $value );
+    $toolbox         = new calendarComponent();
+    $xprop['params'] = $toolbox->_setParams( $params );
+    if( !is_array( $this->xprop )) $this->xprop = array();
+    $this->xprop[strtoupper( $label )] = $xprop;
+    return TRUE;
+  }
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ * create element format parts
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.0.6 - 2006-06-20
+ * @return string
+ */
+  function _createFormat() {
+    $objectname                   = null;
+    switch( $this->format ) {
+      case 'xcal':
+        $objectname               = ( isset( $this->timezonetype )) ?
+                                 strtolower( $this->timezonetype )  :  strtolower( $this->objName );
+        $this->componentStart1    = $this->elementStart1 = '<';
+        $this->componentStart2    = $this->elementStart2 = '>';
+        $this->componentEnd1      = $this->elementEnd1   = '</';
+        $this->componentEnd2      = $this->elementEnd2   = '>'.$this->nl;
+        $this->intAttrDelimiter   = '<!-- -->';
+        $this->attributeDelimiter = $this->nl;
+        $this->valueInit          = null;
+        break;
+      default:
+        $objectname               = ( isset( $this->timezonetype )) ?
+                                 strtoupper( $this->timezonetype )  :  strtoupper( $this->objName );
+        $this->componentStart1    = 'BEGIN:';
+        $this->componentStart2    = null;
+        $this->componentEnd1      = 'END:';
+        $this->componentEnd2      = $this->nl;
+        $this->elementStart1      = null;
+        $this->elementStart2      = null;
+        $this->elementEnd1        = null;
+        $this->elementEnd2        = $this->nl;
+        $this->intAttrDelimiter   = '<!-- -->';
+        $this->attributeDelimiter = ';';
+        $this->valueInit          = ':';
+        break;
+    }
+    return $objectname;
+  }
+/**
+ * creates formatted output for calendar component property
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-23
+ * @param string $label property name
+ * @param string $attributes property attributes
+ * @param string $content property content (optional)
+ * @return string
+ */
+  function _createElement( $label, $attributes=null, $content=FALSE ) {
+    $label  = $this->_formatPropertyName( $label );
+    $output = $this->elementStart1.$label;
+    $categoriesAttrLang = null;
+    $attachInlineBinary = FALSE;
+    $attachfmttype      = null;
+    if( !empty( $attributes ))  {
+      $attributes  = trim( $attributes );
+      if ( 'xcal' == $this->format) {
+        $attributes2 = explode( $this->intAttrDelimiter, $attributes );
+        $attributes  = null;
+        foreach( $attributes2 as $attribute ) {
+          $attrKVarr = explode( '=', $attribute );
+          if( empty( $attrKVarr[0] ))
+            continue;
+          if( !isset( $attrKVarr[1] )) {
+            $attrValue = $attrKVarr[0];
+            $attrKey   = null;
+          }
+          elseif( 2 == count( $attrKVarr)) {
+            $attrKey   = strtolower( $attrKVarr[0] );
+            $attrValue = $attrKVarr[1];
+          }
+          else {
+            $attrKey   = strtolower( $attrKVarr[0] );
+            unset( $attrKVarr[0] );
+            $attrValue = implode( '=', $attrKVarr );
+          }
+          if(( 'attach' == $label ) && ( in_array( $attrKey, array( 'fmttype', 'encoding', 'value' )))) {
+            $attachInlineBinary = TRUE;
+            if( 'fmttype' == $attrKey )
+              $attachfmttype = $attrKey.'='.$attrValue;
+            continue;
+          }
+          elseif(( 'categories' == $label ) && ( 'language' == $attrKey ))
+            $categoriesAttrLang = $attrKey.'='.$attrValue;
+          else {
+            $attributes .= ( empty( $attributes )) ? ' ' : $this->attributeDelimiter.' ';
+            $attributes .= ( !empty( $attrKey )) ? $attrKey.'=' : null;
+            if(( '"' == substr( $attrValue, 0, 1 )) && ( '"' == substr( $attrValue, -1 ))) {
+              $attrValue = substr( $attrValue, 1, ( strlen( $attrValue ) - 2 ));
+              $attrValue = str_replace( '"', '', $attrValue );
+            }
+            $attributes .= '"'.htmlspecialchars( $attrValue ).'"';
+          }
+        }
+      }
+      else {
+        $attributes = str_replace( $this->intAttrDelimiter, $this->attributeDelimiter, $attributes );
+      }
+    }
+    if(((( 'attach' == $label ) && !$attachInlineBinary ) ||
+         ( in_array( $label, array( 'tzurl', 'url' ))))      && ( 'xcal' == $this->format)) {
+      $pos = strrpos($content, "/");
+      $docname = ( $pos !== false) ? substr( $content, (1 - strlen( $content ) + $pos )) : $content;
+      $this->xcaldecl[] = array( 'xmldecl'  => 'ENTITY'
+                               , 'uri'      => $docname
+                               , 'ref'      => 'SYSTEM'
+                               , 'external' => $content
+                               , 'type'     => 'NDATA'
+                               , 'type2'    => 'BINERY' );
+      $attributes .= ( empty( $attributes )) ? ' ' : $this->attributeDelimiter.' ';
+      $attributes .= 'uri="'.$docname.'"';
+      $content = null;
+      if( 'attach' == $label ) {
+        $attributes = str_replace( $this->attributeDelimiter, $this->intAttrDelimiter, $attributes );
+        $content = $this->_createElement( 'extref', $attributes, null );
+        $attributes = null;
+      }
+    }
+    elseif(( 'attach' == $label ) && $attachInlineBinary && ( 'xcal' == $this->format)) {
+      $content = $this->nl.$this->_createElement( 'b64bin', $attachfmttype, $content ); // max one attribute
+    }
+    $output .= $attributes;
+    if( !$content ) {
+      switch( $this->format ) {
+        case 'xcal':
+          $output .= ' /';
+          $output .= $this->elementStart2;
+          return $output;
+          break;
+        default:
+          $output .= $this->elementStart2.$this->valueInit;
+          return $this->_size75( $output );
+          break;
+      }
+    }
+    $output .= $this->elementStart2;
+    $output .= $this->valueInit.$content;
+    switch( $this->format ) {
+      case 'xcal':
+        return $output.$this->elementEnd1.$label.$this->elementEnd2;
+        break;
+      default:
+        return $this->_size75( $output );
+        break;
+    }
+  }
+/**
+ * creates formatted output for calendar component property parameters
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 0.9.22 - 2007-04-10
+ * @param array $params  optional
+ * @param array $ctrKeys optional
+ * @return string
+ */
+  function _createParams( $params=array(), $ctrKeys=array() ) {
+    $attrLANG = $attr1 = $attr2 = null;
+    $CNattrKey   = ( in_array( 'CN',       $ctrKeys )) ? TRUE : FALSE ;
+    $LANGattrKey = ( in_array( 'LANGUAGE', $ctrKeys )) ? TRUE : FALSE ;
+    $CNattrExist = $LANGattrExist = FALSE;
+    if( is_array( $params )) {
+      foreach( $params as $paramKey => $paramValue ) {
+        if( is_int( $paramKey ))
+          $attr2            .= $this->intAttrDelimiter.$paramValue;
+        elseif(( 'LANGUAGE' == $paramKey ) && $LANGattrKey ) {
+          $attrLANG         .= $this->intAttrDelimiter."LANGUAGE=$paramValue";
+          $LANGattrExist     = TRUE;
+        }
+        elseif(( 'CN'       == $paramKey ) && $CNattrKey ) {
+          $attr1             = $this->intAttrDelimiter.'CN="'.$paramValue.'"';
+          $CNattrExist       = TRUE;
+        }
+        elseif(( 'ALTREP'   == $paramKey ) && in_array( $paramKey, $ctrKeys ))
+          $attr2            .= $this->intAttrDelimiter.'ALTREP="'.$paramValue.'"';
+        elseif(( 'DIR'      == $paramKey ) && in_array( $paramKey, $ctrKeys ))
+          $attr2            .= $this->intAttrDelimiter.'DIR="'.$paramValue.'"';
+        elseif(( 'SENT-BY'  == $paramKey ) && in_array( $paramKey, $ctrKeys ))
+          $attr2            .= $this->intAttrDelimiter.'SENT-BY="MAILTO:'.$paramValue.'"';
+        else
+          $attr2            .= $this->intAttrDelimiter."$paramKey=$paramValue";
+      }
+    }
+    if( !$LANGattrExist ) {
+      $lang = $this->getConfig( 'language' );
+      if(( $CNattrExist || $LANGattrKey ) && $lang )
+        $attrLANG .= $this->intAttrDelimiter.'LANGUAGE='.$lang;
+    }
+    return $attrLANG.$attr1.$attr2;
+  }
+/**
+ * check a date(-time) for an opt. timezone and if it is a DATE-TIME or DATE
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.16 - 2008-10-25
+ * @param array $date, date to check
+ * @param int $parno, no of date parts (i.e. year, month.. .)
+ * @return array $params, property parameters
+ */
+  function _chkdatecfg( $theDate, & $parno, & $params ) {
+    if( isset( $params['TZID'] ))
+      $parno = 6;
+    elseif( isset( $params['VALUE'] ) && ( 'DATE' == $params['VALUE'] ))
+      $parno = 3;
+    else {
+      if( isset( $params['VALUE'] ) && ( 'PERIOD' == $params['VALUE'] ))
+        $parno = 7;
+      if( is_array( $theDate )) {
+        if( isset( $theDate['timestamp'] ))
+          $tzid = ( isset( $theDate['tz'] )) ? $theDate['tz'] : null;
+        else
+          $tzid = ( isset( $theDate['tz'] )) ? $theDate['tz'] : ( 7 == count( $theDate )) ? end( $theDate ) : null;
+        if( !empty( $tzid )) {
+          $parno = 7;
+          if( !$this->_isOffset( $tzid ))
+            $params['TZID'] = $tzid; // save only timezone
+        }
+        elseif( !$parno && ( 3 == count( $theDate )) && 
+          ( isset( $params['VALUE'] ) && ( 'DATE' == $params['VALUE'] )))
+          $parno = 3;
+        else
+          $parno = 6;
+      }
+      else { // string
+        $date = trim( $theDate );
+        if( 'Z' == substr( $date, -1 ))
+          $parno = 7; // UTC DATE-TIME
+        elseif((( 8 == strlen( $date ) && ctype_digit( $date )) || ( 11 >= strlen( $date ))) && 
+          ( !isset( $params['VALUE'] ) || !in_array( $params['VALUE'], array( 'DATE-TIME', 'PERIOD' ))))
+          $parno = 3; // DATE
+        $date = $this->_date_time_string( $date, $parno );
+        if( !empty( $date['tz'] )) {
+          $parno = 7;
+          if( !$this->_isOffset( $date['tz'] ))
+            $params['TZID'] = $date['tz']; // save only timezone
+        }
+        elseif( empty( $parno ))
+          $parno = 6;
+      }
+      if( isset( $params['TZID'] ))
+        $parno = 6;
+    }
+  }
+/**
+ * convert local startdate/enddate (Ymd[His]) to duration
+ *
+ * uses this component dates if missing input dates
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.2.11 - 2007-11-03
+ * @param array $startdate, optional
+ * @param array $duration, optional
+ * @return array duration
+ */
+  function _date2duration( $startdate=FALSE, $enddate=FALSE ) {
+    if( !$startdate || !$enddate ) {
+      if(   FALSE === ( $startdate = $this->getProperty( 'dtstart' )))
+        return null;
+      if(   FALSE === ( $enddate   = $this->getProperty( 'dtend' )))    // vevent/vfreebusy
+        if( FALSE === ( $enddate   = $this->getProperty( 'due' )))      // vtodo
+          return null;
+    }
+    if( !$startdate || !$enddate )
+      return null;
+    $startWdate  = mktime( 0, 0, 0, $startdate['month'], $startdate['day'], $startdate['year'] );
+    $endWdate    = mktime( 0, 0, 0, $enddate['month'],   $enddate['day'],   $enddate['year'] );
+    $wduration   = $endWdate - $startWdate;
+    $dur         = array();
+    $dur['week'] = (int) floor( $wduration / ( 7 * 24 * 60 * 60 ));
+    $wduration   =              $wduration % ( 7 * 24 * 60 * 60 );
+    $dur['day']  = (int) floor( $wduration / ( 24 * 60 * 60 ));
+    $wduration   =              $wduration % ( 24 * 60 * 60 );
+    $dur['hour'] = (int) floor( $wduration / ( 60 * 60 ));
+    $wduration   =              $wduration % ( 60 * 60 );
+    $dur['min']  = (int) floor( $wduration / ( 60 ));
+    $dur['sec']  = (int)        $wduration % ( 60 );
+    return $dur;
+  }
+/**
+ * convert date/datetime to timestamp
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-30
+ * @param array  $datetime  datetime/(date)
+ * @param string $tz        timezone
+ * @return timestamp
+ */
+  function _date2timestamp( $datetime, $tz=null ) {
+    $output = null;
+    if( !isset( $datetime['hour'] )) $datetime['hour'] = '0';
+    if( !isset( $datetime['min'] ))  $datetime['min']  = '0';
+    if( !isset( $datetime['sec'] ))  $datetime['sec']  = '0';
+    foreach( $datetime as $dkey => $dvalue ) {
+      if( 'tz' != $dkey )
+        $datetime[$dkey] = (integer) $dvalue;
+    }
+    if( $tz )
+      $datetime['tz'] = $tz;
+    $offset = ( isset( $datetime['tz'] ) && ( '' < trim ( $datetime['tz'] ))) ? $this->_tz2offset( $datetime['tz'] ) : 0;
+    $output = mktime( $datetime['hour'], $datetime['min'], ($datetime['sec'] + $offset), $datetime['month'], $datetime['day'], $datetime['year'] );
+    return $output;
+  }
+/**
+ * ensures internal date-time/date format for input date-time/date in array format
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 0.3.0 - 2006-08-15
+ * @param array $datetime
+ * @param int $parno optional, default FALSE
+ * @return array
+ */
+  function _date_time_array( $datetime, $parno=FALSE ) {
+    $output = array();
+    foreach( $datetime as $dateKey => $datePart ) {
+      switch ( $dateKey ) {
+        case '0': case 'year':   $output['year']  = $datePart; break;
+        case '1': case 'month':  $output['month'] = $datePart; break;
+        case '2': case 'day':    $output['day']   = $datePart; break;
+      }
+      if( 3 != $parno ) {
+        switch ( $dateKey ) {
+          case '0':
+          case '1':
+          case '2': break;
+          case '3': case 'hour': $output['hour']  = $datePart; break;
+          case '4': case 'min' : $output['min']   = $datePart; break;
+          case '5': case 'sec' : $output['sec']   = $datePart; break;
+          case '6': case 'tz'  : $output['tz']    = $datePart; break;
+        }
+      }
+    }
+    if( 3 != $parno ) {
+      if( !isset( $output['hour'] ))
+        $output['hour'] = 0;
+      if( !isset( $output['min']  ))
+        $output['min'] = 0;
+      if( !isset( $output['sec']  ))
+        $output['sec'] = 0;
+    }
+    return $output;
+  }
+/**
+ * ensures internal date-time/date format for input date-time/date in string fromat
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.2.10 - 2007-10-19
+ * @param array $datetime
+ * @param int $parno optional, default FALSE
+ * @return array
+ */
+  function _date_time_string( $datetime, $parno=FALSE ) {
+    $datetime = (string) trim( $datetime );
+    $tz  = null;
+    $len = strlen( $datetime ) - 1;
+    if( 'Z' == substr( $datetime, -1 )) {
+      $tz = 'Z';
+      $datetime = trim( substr( $datetime, 0, $len ));
+    }
+    elseif( ( ctype_digit( substr( $datetime, -2, 2 ))) && // time or date
+                  ( '-' == substr( $datetime, -3, 1 )) ||
+                  ( ':' == substr( $datetime, -3, 1 )) ||
+                  ( '.' == substr( $datetime, -3, 1 ))) {
+      $continue = TRUE;
+    }
+    elseif( ( ctype_digit( substr( $datetime, -4, 4 ))) && // 4 pos offset
+            ( ' +' == substr( $datetime, -6, 2 )) ||
+            ( ' -' == substr( $datetime, -6, 2 ))) {
+      $tz = substr( $datetime, -5, 5 );
+      $datetime = substr( $datetime, 0, ($len - 5));
+    }
+    elseif( ( ctype_digit( substr( $datetime, -6, 6 ))) && // 6 pos offset
+            ( ' +' == substr( $datetime, -8, 2 )) ||
+            ( ' -' == substr( $datetime, -8, 2 ))) {
+      $tz = substr( $datetime, -7, 7 );
+      $datetime = substr( $datetime, 0, ($len - 7));
+    }
+    elseif( ( 6 < $len ) && ( ctype_digit( substr( $datetime, -6, 6 )))) {
+      $continue = TRUE;
+    }
+    elseif( 'T' ==  substr( $datetime, -7, 1 )) {
+      $continue = TRUE;
+    }
+    else {
+      $cx  = $tx = 0;    //  19970415T133000 US-Eastern
+      for( $cx = -1; $cx > ( 9 - $len ); $cx-- ) {
+        if(( ' ' == substr( $datetime, $cx, 1 )) || ctype_digit( substr( $datetime, $cx, 1 )))
+          break; // if exists, tz ends here.. . ?
+        elseif( ctype_alpha( substr( $datetime, $cx, 1 )) ||
+             ( in_array( substr( $datetime, $cx, 1 ), array( '-', '/' ))))
+          $tx--; // tz length counter
+      }
+      if( 0 > $tx ) {
+        $tz = substr( $datetime, $tx );
+        $datetime = trim( substr( $datetime, 0, $len + $tx + 1 ));
+      }
+    }
+    if( 0 < substr_count( $datetime, '-' )) {
+      $datetime = str_replace( '-', '/', $datetime );
+    }
+    elseif( ctype_digit( substr( $datetime, 0, 8 )) &&
+           ( 'T' ==      substr( $datetime, 8, 1 )) &&
+            ctype_digit( substr( $datetime, 9, 6 ))) {
+      $datetime = substr( $datetime,  4, 2 )
+             .'/'.substr( $datetime,  6, 2 )
+             .'/'.substr( $datetime,  0, 4 )
+             .' '.substr( $datetime,  9, 2 )
+             .':'.substr( $datetime, 11, 2 )
+             .':'.substr( $datetime, 13);
+    }
+    $datestring = date( 'Y-m-d H:i:s', strtotime( $datetime ));
+    $tz                = trim( $tz );
+    $output            = array();
+    $output['year']    = substr( $datestring, 0, 4 );
+    $output['month']   = substr( $datestring, 5, 2 );
+    $output['day']     = substr( $datestring, 8, 2 );
+    if(( 6 == $parno ) || ( 7 == $parno )) {
+      $output['hour']  = substr( $datestring, 11, 2 );
+      $output['min']   = substr( $datestring, 14, 2 );
+      $output['sec']   = substr( $datestring, 17, 2 );
+      if( !empty( $tz ))
+        $output['tz']  = $tz;
+    }
+    elseif( 3 != $parno ) {
+      if(( '00' < substr( $datestring, 11, 2 )) ||
+         ( '00' < substr( $datestring, 14, 2 )) ||
+         ( '00' < substr( $datestring, 17, 2 ))) {
+        $output['hour']  = substr( $datestring, 11, 2 );
+        $output['min']   = substr( $datestring, 14, 2 );
+        $output['sec']   = substr( $datestring, 17, 2 );
+      }
+      if( !empty( $tz ))
+        $output['tz']  = $tz;
+    }
+    return $output;
+  }
+/**
+ * ensures internal duration format for input in array format
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.1.1 - 2007-06-24
+ * @param array $duration
+ * @return array
+ */
+  function _duration_array( $duration ) {
+    $output = array();
+    if(    is_array( $duration )        &&
+       ( 1 == count( $duration ))       &&
+              isset( $duration['sec'] ) &&
+              ( 60 < $duration['sec'] )) {
+      $durseconds  = $duration['sec'];
+      $output['week'] = floor( $durseconds / ( 60 * 60 * 24 * 7 ));
+      $durseconds  =           $durseconds % ( 60 * 60 * 24 * 7 );
+      $output['day']  = floor( $durseconds / ( 60 * 60 * 24 ));
+      $durseconds  =           $durseconds % ( 60 * 60 * 24 );
+      $output['hour'] = floor( $durseconds / ( 60 * 60 ));
+      $durseconds  =           $durseconds % ( 60 * 60 );
+      $output['min']  = floor( $durseconds / ( 60 ));
+      $output['sec']  =      ( $durseconds % ( 60 ));
+    }
+    else {
+      foreach( $duration as $durKey => $durValue ) {
+        if( empty( $durValue )) continue;
+        switch ( $durKey ) {
+          case '0': case 'week': $output['week']  = $durValue; break;
+          case '1': case 'day':  $output['day']   = $durValue; break;
+          case '2': case 'hour': $output['hour']  = $durValue; break;
+          case '3': case 'min':  $output['min']   = $durValue; break;
+          case '4': case 'sec':  $output['sec']   = $durValue; break;
+        }
+      }
+    }
+    if( isset( $output['week'] ) && ( 0 < $output['week'] )) {
+      unset( $output['day'], $output['hour'], $output['min'], $output['sec'] );
+      return $output;
+    }
+    unset( $output['week'] );
+    if( empty( $output['day'] ))
+      unset( $output['day'] );
+    if ( isset( $output['hour'] ) || isset( $output['min'] ) || isset( $output['sec'] )) {
+      if( !isset( $output['hour'] )) $output['hour'] = 0;
+      if( !isset( $output['min']  )) $output['min']  = 0;
+      if( !isset( $output['sec']  )) $output['sec']  = 0;
+      if(( 0 == $output['hour'] ) && ( 0 == $output['min'] ) && ( 0 == $output['sec'] ))
+        unset( $output['hour'], $output['min'], $output['sec'] );
+    }
+    return $output;
+  }
+/**
+ * convert duration to date in array format based on input or dtstart value
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-30
+ * @param array $startdate, optional
+ * @param array $duration, optional
+ * @return array, date format
+ */
+  function duration2date( $startdate=FALSE, $duration=FALSE ) {
+    if( $startdate && $duration ) {
+      $d1               = $startdate;
+      $dur              = $duration;
+    }
+    elseif( isset( $this->dtstart['value'] ) && isset( $this->duration['value'] )) {
+      $d1               = $this->dtstart['value'];
+      $dur              = $this->duration['value'];
+    }
+    else
+      return null;
+    $dateOnly         = ( isset( $d1['hour'] ) || isset( $d1['min'] ) || isset( $d1['sec'] )) ? FALSE : TRUE;
+    $d1['hour']       = ( isset( $d1['hour'] )) ? $d1['hour'] : 0;
+    $d1['min']        = ( isset( $d1['min'] ))  ? $d1['min']  : 0;
+    $d1['sec']        = ( isset( $d1['sec'] ))  ? $d1['sec']  : 0;
+    $dtend = mktime( $d1['hour'], $d1['min'], $d1['sec'], $d1['month'], $d1['day'], $d1['year'] );
+    if( isset( $dur['week'] ))
+      $dtend += ( $dur['week'] * 7 * 24 * 60 * 60 );
+    if( isset( $dur['day'] ))
+      $dtend += ( $dur['day'] * 24 * 60 * 60 );
+    if( isset( $dur['hour'] ))
+      $dtend += ( $dur['hour'] * 60 *60 );
+    if( isset( $dur['min'] ))
+      $dtend += ( $dur['min'] * 60 );
+    if( isset( $dur['sec'] ))
+      $dtend +=   $dur['sec'];
+    $dtend2 = array();
+    $dtend2['year']   = date('Y', $dtend );
+    $dtend2['month']  = date('m', $dtend );
+    $dtend2['day']    = date('d', $dtend );
+    $dtend2['hour']   = date('H', $dtend );
+    $dtend2['min']    = date('i', $dtend );
+    $dtend2['sec']    = date('s', $dtend );
+    if( isset( $d1['tz'] ))
+      $dtend2['tz']   = $d1['tz'];
+    if( $dateOnly && (( 0 == $dtend2['hour'] ) && ( 0 == $dtend2['min'] ) && ( 0 == $dtend2['sec'] )))
+      unset( $dtend2['hour'], $dtend2['min'], $dtend2['sec'] );
+    return $dtend2;
+  }
+/**
+ * ensures internal duration format for input in string format
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.0.5 - 2007-03-14
+ * @param string $duration
+ * @return array
+ */
+  function _duration_string( $duration ) {
+   $duration = (string) trim( $duration );
+   while( 'P' != strtoupper( substr( $duration, 0, 1 ))) {
+     if( 0 < strlen( $duration ))
+       $duration = substr( $duration, 1 );
+     else
+       return false; // no leading P !?!?
+   }
+   $duration = substr( $duration, 1 ); // skip P
+   $duration = str_replace ( 't', 'T', $duration );
+   $duration = str_replace ( 'T', '', $duration );
+   $output = array();
+   $val    = null;
+   for( $ix=0; $ix < strlen( $duration ); $ix++ ) {
+     switch( strtoupper( $duration{$ix} )) {
+      case 'W':
+        $output['week'] = $val;
+        $val            = null;
+        break;
+      case 'D':
+        $output['day']  = $val;
+        $val            = null;
+        break;
+      case 'H':
+        $output['hour'] = $val;
+        $val            = null;
+        break;
+      case 'M':
+        $output['min']  = $val;
+        $val            = null;
+        break;
+      case 'S':
+        $output['sec']  = $val;
+        $val            = null;
+        break;
+      default:
+        if( !ctype_digit( $duration{$ix} ))
+          return false; // unknown duration controll character  !?!?
+        else
+          $val .= $duration{$ix};
+     }
+   }
+   return $this->_duration_array( $output );
+  }
+/**
+ * if not preSet, if exist, remove key with expected value from array and return hit value else return elseValue
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.16 - 2008-11-08
+ * @param array $array
+ * @param string $expkey, expected key
+ * @param string $expval, expected value
+ * @param int $hitVal optional, return value if found
+ * @param int $elseVal optional, return value if not found
+ * @param int $preSet optional, return value if already preset
+ * @return int
+ */
+  function _existRem( &$array, $expkey, $expval=FALSE, $hitVal=null, $elseVal=null, $preSet=null ) {
+    if( $preSet )
+      return $preSet;
+    if( !is_array( $array ) || ( 0 == count( $array )))
+      return $elseVal;
+    foreach( $array as $key => $value ) {
+      if( strtoupper( $expkey ) == strtoupper( $key )) {
+        if( !$expval || ( strtoupper( $expval ) == strtoupper( $array[$key] ))) {
+          unset( $array[$key] );
+          return $hitVal;
+        }
+      }
+    }
+    return $elseVal;
+  }
+/**
+ * creates formatted output for calendar component property data value type date/date-time
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-30
+ * @param array   $datetime
+ * @param int     $parno, optional, default 6
+ * @return string
+ */
+  function _format_date_time( $datetime, $parno=6 ) {
+    if( !isset( $datetime['year'] )  &&
+        !isset( $datetime['month'] ) &&
+        !isset( $datetime['day'] )   &&
+        !isset( $datetime['hour'] )  &&
+        !isset( $datetime['min'] )   &&
+        !isset( $datetime['sec'] ))
+      return ;
+    $output = null;
+    // if( !isset( $datetime['day'] )) { $o=''; foreach($datetime as $k=>$v) {if(is_array($v)) $v=implode('-',$v);$o.=" $k=>$v";} echo " day SAKNAS : $o <br />\n"; }
+    foreach( $datetime as $dkey => $dvalue ) {
+      if( 'tz' != $dkey )
+        $datetime[$dkey] = (integer) $dvalue;
+    }
+    $output = date('Ymd', mktime( 0, 0, 0, $datetime['month'], $datetime['day'], $datetime['year']));
+    if( isset( $datetime['hour'] )  ||
+        isset( $datetime['min'] )   ||
+        isset( $datetime['sec'] )   ||
+        isset( $datetime['tz'] )) {
+      if( isset( $datetime['tz'] )  &&
+         !isset( $datetime['hour'] ))
+        $datetime['hour'] = 0;
+      if( isset( $datetime['hour'] )  &&
+         !isset( $datetime['min'] ))
+        $datetime['min'] = 0;
+      if( isset( $datetime['hour'] )  &&
+          isset( $datetime['min'] )   &&
+         !isset( $datetime['sec'] ))
+        $datetime['sec'] = 0;
+      $date = mktime( $datetime['hour'], $datetime['min'], $datetime['sec'], $datetime['month'], $datetime['day'], $datetime['year']);
+      $output .= date('\THis', $date );
+      if( isset( $datetime['tz'] ) && ( '' < trim ( $datetime['tz'] ))) {
+        $datetime['tz'] = trim( $datetime['tz'] );
+        if( 'Z' == $datetime['tz'] )
+          $output .= 'Z';
+        $offset = $this->_tz2offset( $datetime['tz'] );
+        if( 0 != $offset ) {
+          $date = mktime( $datetime['hour'], $datetime['min'], ($datetime['sec'] + $offset), $datetime['month'], $datetime['day'], $datetime['year']);
+          $output    = date( 'Ymd\THis\Z', $date );
+        }
+      }
+      elseif( 7 == $parno )
+        $output .= 'Z';
+    }
+    return $output;
+  }
+/**
+ * creates formatted output for calendar component property data value type duration
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.16 - 2008-10-10
+ * @param array $duration ( week, day, hour, min, sec )
+ * @return string
+ */
+  function _format_duration( $duration ) {
+    if( !isset( $duration['week'] ) &&
+        !isset( $duration['day'] )  &&
+        !isset( $duration['hour'] ) &&
+        !isset( $duration['min'] )  &&
+        !isset( $duration['sec'] ))
+      return;
+    $output = 'P';
+    if( isset( $duration['week'] ) && ( 0 < $duration['week'] ))
+      $output   .= $duration['week'].'W';
+    else {
+      if( isset($duration['day'] ) && ( 0 < $duration['day'] ))
+        $output .= $duration['day'].'D';
+      if(( isset( $duration['hour']) && ( 0 < $duration['hour'] )) ||
+         ( isset( $duration['min'])  && ( 0 < $duration['min'] ))  ||
+         ( isset( $duration['sec'])  && ( 0 < $duration['sec'] ))) {
+        $output .= 'T';
+        $output .= ( isset( $duration['hour']) && ( 0 < $duration['hour'] )) ? $duration['hour'].'H' : '0H';
+        $output .= ( isset( $duration['min'])  && ( 0 < $duration['min'] ))  ? $duration['min']. 'M' : '0M';
+        $output .= ( isset( $duration['sec'])  && ( 0 < $duration['sec'] ))  ? $duration['sec']. 'S' : '0S';
+      }
+    }
+    return $output;
+  }
+/**
+ * creates formatted output for calendar component property data value type recur
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-22
+ * @param array $recurlabel
+ * @param array $recurdata
+ * @return string
+ */
+  function _format_recur( $recurlabel, $recurdata ) {
+    $output = null;
+    foreach( $recurdata as $therule ) {
+      if( empty( $therule['value'] )) {
+        if( $this->getConfig( 'allowEmpty' )) $output .= $this->_createElement( $recurlabel );
+        continue;
+      }
+      $attributes = ( isset( $therule['params'] )) ? $this->_createParams( $therule['params'] ) : null;
+      $content1  = $content2  = null;
+      foreach( $therule['value'] as $rulelabel => $rulevalue ) {
+        switch( $rulelabel ) {
+          case 'FREQ': {
+            $content1 .= "FREQ=$rulevalue";
+            break;
+          }
+          case 'UNTIL': {
+            $content2 .= ";UNTIL=";
+            $content2 .= $this->_format_date_time( $rulevalue );
+            break;
+          }
+          case 'COUNT':
+          case 'INTERVAL':
+          case 'WKST': {
+            $content2 .= ";$rulelabel=$rulevalue";
+            break;
+          }
+          case 'BYSECOND':
+          case 'BYMINUTE':
+          case 'BYHOUR':
+          case 'BYMONTHDAY':
+          case 'BYYEARDAY':
+          case 'BYWEEKNO':
+          case 'BYMONTH':
+          case 'BYSETPOS': {
+            $content2 .= ";$rulelabel=";
+            if( is_array( $rulevalue )) {
+              foreach( $rulevalue as $vix => $valuePart ) {
+                $content2 .= ( $vix ) ? ',' : null;
+                $content2 .= $valuePart;
+              }
+            }
+            else
+             $content2 .= $rulevalue;
+            break;
+          }
+          case 'BYDAY': {
+            $content2 .= ";$rulelabel=";
+            $bydaycnt = 0;
+            foreach( $rulevalue as $vix => $valuePart ) {
+              $content21 = $content22 = null;
+              if( is_array( $valuePart )) {
+                $content2 .= ( $bydaycnt ) ? ',' : null;
+                foreach( $valuePart as $vix2 => $valuePart2 ) {
+                  if( 'DAY' != strtoupper( $vix2 ))
+                      $content21 .= $valuePart2;
+                  else
+                    $content22 .= $valuePart2;
+                }
+                $content2 .= $content21.$content22;
+                $bydaycnt++;
+              }
+              else {
+                $content2 .= ( $bydaycnt ) ? ',' : null;
+                if( 'DAY' != strtoupper( $vix ))
+                    $content21 .= $valuePart;
+                else {
+                  $content22 .= $valuePart;
+                  $bydaycnt++;
+                }
+                $content2 .= $content21.$content22;
+              }
+            }
+            break;
+          }
+          default: {
+            $content2 .= ";$rulelabel=$rulevalue";
+            break;
+          }
+        }
+      }
+      $output .= $this->_createElement( $recurlabel, $attributes, $content1.$content2 );
+    }
+    return $output;
+  }
+/**
+ * create property name case - lower/upper
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 0.9.7 - 2006-11-20
+ * @param string $propertyName
+ * @return string
+ */
+  function _formatPropertyName( $propertyName ) {
+    switch( $this->format ) {
+      case 'xcal':
+        return strtolower( $propertyName );
+        break;
+      default:
+        return strtoupper( $propertyName );
+        break;
+    }
+  }
+/**
+ * checks if input array contains a date
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.16 - 2008-10-25
+ * @param array $input
+ * @return bool
+ */
+  function _isArrayDate( $input ) {
+    if( isset( $input['week'] ) || ( !in_array( count( $input ), array( 3, 6, 7 ))))
+      return FALSE;
+    if( 7 == count( $input ))
+      return TRUE;
+    if( isset( $input['year'] ) && isset( $input['month'] ) && isset( $input['day'] ))
+      return checkdate( (int) $input['month'], (int) $input['day'], (int) $input['year'] );
+    if( isset( $input['day'] ) || isset( $input['hour'] ) || isset( $input['min'] ) || isset( $input['sec'] ))
+      return FALSE;
+    if( in_array( 0, $input ))
+      return FALSE;
+    if(( 1970 > $input[0] ) || ( 12 < $input[1] ) || ( 31 < $input[2] ))
+      return FALSE;
+    if(( isset( $input[0] ) && isset( $input[1] ) && isset( $input[2] )) &&
+         checkdate( (int) $input[1], (int) $input[2], (int) $input[0] ))
+      return TRUE;
+    $input = $this->_date_time_string( $input[1].'/'.$input[2].'/'.$input[0], 3 ); //  m - d - Y
+    if( isset( $input['year'] ) && isset( $input['month'] ) && isset( $input['day'] ))
+      return checkdate( (int) $input['month'], (int) $input['day'], (int) $input['year'] );
+    return FALSE;
+  }
+/**
+ * checks if input array contains a timestamp date
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.16 - 2008-10-18
+ * @param array $input
+ * @return bool
+ */
+  function _isArrayTimestampDate( $input ) {
+    return ( is_array( $input ) && isset( $input['timestamp'] )) ? TRUE : FALSE ;
+  }
+/**
+ * controll if input string contains traling UTC offset
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.16 - 2008-10-19
+ * @param string $input
+ * @return bool
+ */
+  function _isOffset( $input ) {
+    $input         = trim( (string) $input );
+    if( 'Z' == substr( $input, -1 ))
+      return TRUE;
+    elseif((   5 <= strlen( $input )) &&
+       ( in_array( substr( $input, -5, 1 ), array( '+', '-' ))) &&
+       (   '0000'  < substr( $input, -4 )) && (   '9999' >= substr( $input, -4 )))
+      return TRUE;
+    elseif((    7 <= strlen( $input )) &&
+       ( in_array( substr( $input, -7, 1 ), array( '+', '-' ))) &&
+       ( '000000'  < substr( $input, -6 )) && ( '999999' >= substr( $input, -6 )))
+      return TRUE;
+    return FALSE;
+
+  }
+/**
+ * check if property not exists within component
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-10-15
+ * @param string $propName
+ * @return bool
+ */
+  function _notExistProp( $propName ) {
+    if( empty( $propName )) return FALSE; // when deleting x-prop, an empty propName may be used=allowed
+    $propName = strtolower( $propName );
+    if(     'last-modified'    == $propName )  { if( !isset( $this->lastmodified ))    return TRUE; }
+    elseif( 'percent-complete' == $propName )  { if( !isset( $this->percentcomplete )) return TRUE; }
+    elseif( 'recurrence-id'    == $propName )  { if( !isset( $this->recurrenceid ))    return TRUE; }
+    elseif( 'related-to'       == $propName )  { if( !isset( $this->relatedto ))       return TRUE; }
+    elseif( 'request-status'   == $propName )  { if( !isset( $this->requeststatus ))   return TRUE; }
+    elseif((       'x-' != substr($propName,0,2)) && !isset( $this->$propName ))       return TRUE;
+    return FALSE;
+  }
+/**
+ * remakes a recur pattern to an array of dates
+ *
+ * if missing, UNTIL is set 1 year from startdate (emergency break)
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.16 - 2008-10-18
+ * @param array $result, array to update, array([timestamp] => timestamp)
+ * @param array $recur, pattern for recurrency (only value part, params ignored)
+ * @param array $wdate, component start date
+ * @param array $startdate, start date
+ * @param array $enddate, optional
+ * @return array of recurrence (start-)dates as index
+ * @todo BYHOUR, BYMINUTE, BYSECOND, ev. BYSETPOS due to ambiguity, WEEKLY at year end/start
+ */
+  function _recur2date( & $result, $recur, $wdate, $startdate, $enddate=FALSE ) {
+    foreach( $wdate as $k => $v ) if( ctype_digit( $v )) $wdate[$k] = (int) $v;
+    $wdatets     = $this->_date2timestamp( $wdate );
+    $startdatets = $this->_date2timestamp( $startdate );
+    if( !$enddate ) {
+      $enddate = $startdate;
+      $enddate['year'] += 1;
+// echo "recur __in_ ".implode('-',$startdate)." period start ".implode('-',$wdate)." period end ".implode('-',$enddate)."<br />\n";print_r($recur);echo "<br />\n";//test###
+    }
+    $endDatets = $this->_date2timestamp( $enddate ); // fix break
+    if( !isset( $recur['COUNT'] ) && !isset( $recur['UNTIL'] ))
+      $recur['UNTIL'] = $enddate; // create break
+    if( isset( $recur['UNTIL'] )) {
+      $tdatets = $this->_date2timestamp( $recur['UNTIL'] );
+      if( $endDatets > $tdatets ) {
+        $endDatets = $tdatets; // emergency break
+        $enddate   = $this->_timestamp2date( $endDatets, 6 );
+      }
+      else
+        $recur['UNTIL'] = $this->_timestamp2date( $endDatets, 6 );
+    }
+    if( $wdatets > $endDatets ) {
+     //echo "recur out of date ".implode('-',$this->_date_time_string(date('Y-m-d H:i:s',$wdatets),6))."<br />\n";//test
+      return array(); // nothing to do.. .
+    }
+    if( !isset( $recur['FREQ'] )) // "MUST be specified.. ."
+      $recur['FREQ'] = 'DAILY'; // ??
+    $wkst = ( isset( $recur['WKST'] ) && ( 'SU' == $recur['WKST'] )) ? 24*60*60 : 0; // ??
+    if( !isset( $recur['INTERVAL'] ))
+      $recur['INTERVAL'] = 1;
+    $countcnt = ( !isset( $recur['BYSETPOS'] )) ? 1 : 0; // DTSTART counts as the first occurrence
+            /* find out how to step up dates and set index for interval count */
+    $step = array();
+    if( 'YEARLY' == $recur['FREQ'] )
+      $step['year']  = 1;
+    elseif( 'MONTHLY' == $recur['FREQ'] )
+      $step['month'] = 1;
+    elseif( 'WEEKLY' == $recur['FREQ'] )
+      $step['day']   = 7;
+    else
+      $step['day']   = 1;
+    if( isset( $step['year'] ) && isset( $recur['BYMONTH'] ))
+      $step = array( 'month' => 1 );
+    if( empty( $step ) && isset( $recur['BYWEEKNO'] )) // ??
+      $step = array( 'day' => 7 );
+    if( isset( $recur['BYYEARDAY'] ) || isset( $recur['BYMONTHDAY'] ) || isset( $recur['BYDAY'] ))
+      $step = array( 'day' => 1 );
+    $intervalarr = array();
+    if( 1 < $recur['INTERVAL'] ) {
+      $intervalix = $this->_recurIntervalIx( $recur['FREQ'], $wdate, $wkst );
+      $intervalarr = array( $intervalix => 0 );
+    }
+    if( isset( $recur['BYSETPOS'] )) { // save start date + weekno
+      $bysetposymd1 = $bysetposymd2 = $bysetposw1 = $bysetposw2 = array();
+      $bysetposWold = (int) date( 'W', ( $wdatets + $wkst ));
+      $bysetposYold = $wdate['year'];
+      $bysetposMold = $wdate['month'];
+      $bysetposDold = $wdate['day'];
+      if( is_array( $recur['BYSETPOS'] )) {
+        foreach( $recur['BYSETPOS'] as $bix => $bval )
+          $recur['BYSETPOS'][$bix] = (int) $bval;
+      }
+      else
+        $recur['BYSETPOS'] = array( (int) $recur['BYSETPOS'] );
+      $this->_stepdate( $enddate, $endDatets, $step); // make sure to count whole last period
+    }
+    $this->_stepdate( $wdate, $wdatets, $step);
+    $year_old     = null;
+    $daynames     = array( 'SU', 'MO', 'TU', 'WE', 'TH', 'FR', 'SA' );
+             /* MAIN LOOP */
+     // echo "recur start ".implode('-',$wdate)." end ".implode('-',$enddate)."<br />\n";//test
+    while( TRUE ) {
+      if( isset( $endDatets ) && ( $wdatets > $endDatets ))
+        break;
+      if( isset( $recur['COUNT'] ) && ( $countcnt >= $recur['COUNT'] ))
+        break;
+      if( $year_old != $wdate['year'] ) {
+        $year_old   = $wdate['year'];
+        $daycnts    = array();
+        $yeardays   = $weekno = 0;
+        $yeardaycnt = array();
+        for( $m = 1; $m <= 12; $m++ ) { // count up and update up-counters
+          $daycnts[$m] = array();
+          $weekdaycnt = array();
+          foreach( $daynames as $dn )
+            $yeardaycnt[$dn] = $weekdaycnt[$dn] = 0;
+          $mcnt     = date( 't', mktime( 0, 0, 0, $m, 1, $wdate['year'] ));
+          for( $d   = 1; $d <= $mcnt; $d++ ) {
+            $daycnts[$m][$d] = array();
+            if( isset( $recur['BYYEARDAY'] )) {
+              $yeardays++;
+              $daycnts[$m][$d]['yearcnt_up'] = $yeardays;
+            }
+            if( isset( $recur['BYDAY'] )) {
+              $day    = date( 'w', mktime( 0, 0, 0, $m, $d, $wdate['year'] ));
+              $day    = $daynames[$day];
+              $daycnts[$m][$d]['DAY'] = $day;
+              $weekdaycnt[$day]++;
+              $daycnts[$m][$d]['monthdayno_up'] = $weekdaycnt[$day];
+              $yeardaycnt[$day]++;
+              $daycnts[$m][$d]['yeardayno_up'] = $yeardaycnt[$day];
+            }
+            if(  isset( $recur['BYWEEKNO'] ) || ( $recur['FREQ'] == 'WEEKLY' ))
+              $daycnts[$m][$d]['weekno_up'] =(int)date('W',mktime(0,0,$wkst,$m,$d,$wdate['year']));
+          }
+        }
+        $daycnt = 0;
+        $yeardaycnt = array();
+        if(  isset( $recur['BYWEEKNO'] ) || ( $recur['FREQ'] == 'WEEKLY' )) {
+          $weekno = null;
+          for( $d=31; $d > 25; $d-- ) { // get last weekno for year
+            if( !$weekno )
+              $weekno = $daycnts[12][$d]['weekno_up'];
+            elseif( $weekno < $daycnts[12][$d]['weekno_up'] ) {
+              $weekno = $daycnts[12][$d]['weekno_up'];
+              break;
+            }
+          }
+        }
+        for( $m = 12; $m > 0; $m-- ) { // count down and update down-counters
+          $weekdaycnt = array();
+          foreach( $daynames as $dn )
+            $yeardaycnt[$dn] = $weekdaycnt[$dn] = 0;
+          $monthcnt = 0;
+          $mcnt     = date( 't', mktime( 0, 0, 0, $m, 1, $wdate['year'] ));
+          for( $d   = $mcnt; $d > 0; $d-- ) {
+            if( isset( $recur['BYYEARDAY'] )) {
+              $daycnt -= 1;
+              $daycnts[$m][$d]['yearcnt_down'] = $daycnt;
+            }
+            if( isset( $recur['BYMONTHDAY'] )) {
+              $monthcnt -= 1;
+              $daycnts[$m][$d]['monthcnt_down'] = $monthcnt;
+            }
+            if( isset( $recur['BYDAY'] )) {
+              $day  = $daycnts[$m][$d]['DAY'];
+              $weekdaycnt[$day] -= 1;
+              $daycnts[$m][$d]['monthdayno_down'] = $weekdaycnt[$day];
+              $yeardaycnt[$day] -= 1;
+              $daycnts[$m][$d]['yeardayno_down'] = $yeardaycnt[$day];
+            }
+            if(  isset( $recur['BYWEEKNO'] ) || ( $recur['FREQ'] == 'WEEKLY' ))
+              $daycnts[$m][$d]['weekno_down'] = ($daycnts[$m][$d]['weekno_up'] - $weekno - 1);
+          }
+        }
+      }
+            /* check interval */
+      if( 1 < $recur['INTERVAL'] ) {
+            /* create interval index */
+        $intervalix = $this->_recurIntervalIx( $recur['FREQ'], $wdate, $wkst );
+            /* check interval */
+        $currentKey = array_keys( $intervalarr );
+        $currentKey = end( $currentKey ); // get last index
+        if( $currentKey != $intervalix )
+          $intervalarr = array( $intervalix => ( $intervalarr[$currentKey] + 1 ));
+        if(( $recur['INTERVAL'] != $intervalarr[$intervalix] ) &&
+           ( 0 != $intervalarr[$intervalix] )) {
+            /* step up date */
+    //echo "skip: ".implode('-',$wdate)." ix=$intervalix old=$currentKey interval=".$intervalarr[$intervalix]."<br />\n";//test
+          $this->_stepdate( $wdate, $wdatets, $step);
+          continue;
+        }
+        else // continue within the selected interval
+          $intervalarr[$intervalix] = 0;
+   //echo "cont: ".implode('-',$wdate)." ix=$intervalix old=$currentKey interval=".$intervalarr[$intervalix]."<br />\n";//test
+      }
+      $updateOK = TRUE;
+      if( $updateOK && isset( $recur['BYMONTH'] ))
+        $updateOK = $this->_recurBYcntcheck( $recur['BYMONTH']
+                                           , $wdate['month']
+                                           ,($wdate['month'] - 13));
+      if( $updateOK && isset( $recur['BYWEEKNO'] ))
+        $updateOK = $this->_recurBYcntcheck( $recur['BYWEEKNO']
+                                           , $daycnts[$wdate['month']][$wdate['day']]['weekno_up']
+                                           , $daycnts[$wdate['month']][$wdate['day']]['weekno_down'] );
+      if( $updateOK && isset( $recur['BYYEARDAY'] ))
+        $updateOK = $this->_recurBYcntcheck( $recur['BYYEARDAY']
+                                           , $daycnts[$wdate['month']][$wdate['day']]['yearcnt_up']
+                                           , $daycnts[$wdate['month']][$wdate['day']]['yearcnt_down'] );
+      if( $updateOK && isset( $recur['BYMONTHDAY'] ))
+        $updateOK = $this->_recurBYcntcheck( $recur['BYMONTHDAY']
+                                           , $wdate['day']
+                                           , $daycnts[$wdate['month']][$wdate['day']]['monthcnt_down'] );
+    //echo "efter BYMONTHDAY: ".implode('-',$wdate).' status: '; echo ($updateOK) ? 'TRUE' : 'FALSE'; echo "<br />\n";//test###
+      if( $updateOK && isset( $recur['BYDAY'] )) {
+        $updateOK = FALSE;
+        $m = $wdate['month'];
+        $d = $wdate['day'];
+        if( isset( $recur['BYDAY']['DAY'] )) { // single day, opt with year/month day order no
+          $daynoexists = $daynosw = $daynamesw =  FALSE;
+          if( $recur['BYDAY']['DAY'] == $daycnts[$m][$d]['DAY'] )
+            $daynamesw = TRUE;
+          if( isset( $recur['BYDAY'][0] )) {
+            $daynoexists = TRUE;
+            if(( isset( $recur['FREQ'] ) && ( $recur['FREQ'] == 'MONTHLY' )) || isset( $recur['BYMONTH'] ))
+              $daynosw = $this->_recurBYcntcheck( $recur['BYDAY'][0]
+                                                , $daycnts[$m][$d]['monthdayno_up']
+                                                , $daycnts[$m][$d]['monthdayno_down'] );
+            elseif( isset( $recur['FREQ'] ) && ( $recur['FREQ'] == 'YEARLY' ))
+              $daynosw = $this->_recurBYcntcheck( $recur['BYDAY'][0]
+                                                , $daycnts[$m][$d]['yeardayno_up']
+                                                , $daycnts[$m][$d]['yeardayno_down'] );
+          }
+          if((  $daynoexists &&  $daynosw && $daynamesw ) ||
+             ( !$daynoexists && !$daynosw && $daynamesw )) {
+            $updateOK = TRUE;
+          }
+        //echo "daynoexists:$daynoexists daynosw:$daynosw daynamesw:$daynamesw<br />\n"; // test ###
+        }
+        else {
+          foreach( $recur['BYDAY'] as $bydayvalue ) {
+            $daynoexists = $daynosw = $daynamesw = FALSE;
+            if( isset( $bydayvalue['DAY'] ) &&
+                     ( $bydayvalue['DAY'] == $daycnts[$m][$d]['DAY'] ))
+              $daynamesw = TRUE;
+            if( isset( $bydayvalue[0] )) {
+              $daynoexists = TRUE;
+              if(( isset( $recur['FREQ'] ) && ( $recur['FREQ'] == 'MONTHLY' )) ||
+                   isset( $recur['BYMONTH'] ))
+                $daynosw = $this->_recurBYcntcheck( $bydayvalue['0']
+                                                  , $daycnts[$m][$d]['monthdayno_up']
+                                                  , $daycnts[$m][$d]['monthdayno_down'] );
+              elseif( isset( $recur['FREQ'] ) && ( $recur['FREQ'] == 'YEARLY' ))
+                $daynosw = $this->_recurBYcntcheck( $bydayvalue['0']
+                                                  , $daycnts[$m][$d]['yeardayno_up']
+                                                  , $daycnts[$m][$d]['yeardayno_down'] );
+            }
+        //echo "daynoexists:$daynoexists daynosw:$daynosw daynamesw:$daynamesw<br />\n"; // test ###
+            if((  $daynoexists &&  $daynosw && $daynamesw ) ||
+               ( !$daynoexists && !$daynosw && $daynamesw )) {
+              $updateOK = TRUE;
+              break;
+            }
+          }
+        }
+      }
+      //echo "efter BYDAY: ".implode('-',$wdate).' status: '; echo ($updateOK) ? 'TRUE' : 'FALSE'; echo "<br />\n"; // test ###
+            /* check BYSETPOS */
+      if( $updateOK ) {
+        if( isset( $recur['BYSETPOS'] ) &&
+          ( in_array( $recur['FREQ'], array( 'YEARLY', 'MONTHLY', 'WEEKLY', 'DAILY' )))) {
+          if( isset( $recur['WEEKLY'] )) {
+            if( $bysetposWold == $daycnts[$wdate['month']][$wdate['day']]['weekno_up'] )
+              $bysetposw1[] = $wdatets;
+            else
+              $bysetposw2[] = $wdatets;
+          }
+          else {
+            if(( isset( $recur['FREQ'] ) && ( 'YEARLY'      == $recur['FREQ'] )  &&
+                                            ( $bysetposYold == $wdate['year'] ))   ||
+               ( isset( $recur['FREQ'] ) && ( 'MONTHLY'     == $recur['FREQ'] )  &&
+                                           (( $bysetposYold == $wdate['year'] )  &&
+                                            ( $bysetposMold == $wdate['month'] ))) ||
+               ( isset( $recur['FREQ'] ) && ( 'MONTHLY'     == $recur['FREQ'] )  &&
+                                           (( $bysetposYold == $wdate['year'] )  &&
+                                            ( $bysetposMold == $wdate['month'])  &&
+                                            ( $bysetposDold == $wdate['sday'] ))))
+              $bysetposymd1[] = $wdatets;
+            else
+              $bysetposymd2[] = $wdatets;
+          }
+        }
+        else {
+            /* update result array if BYSETPOS is set */
+          $countcnt++;
+          if( $startdatets <= $wdatets ) { // only output within period
+            $result[$wdatets] = TRUE;
+          //echo "recur ".implode('-',$this->_date_time_string(date('Y-m-d H:i:s',$wdatets),6))."<br />\n";//test
+          }
+         //else echo "recur undate ".implode('-',$this->_date_time_string(date('Y-m-d H:i:s',$wdatets),6))." okdatstart ".implode('-',$this->_date_time_string(date('Y-m-d H:i:s',$startdatets),6))."<br />\n";//test
+          $updateOK = FALSE;
+        }
+      }
+            /* step up date */
+      $this->_stepdate( $wdate, $wdatets, $step);
+            /* check if BYSETPOS is set for updating result array */
+      if( $updateOK && isset( $recur['BYSETPOS'] )) {
+        $bysetpos       = FALSE;
+        if( isset( $recur['FREQ'] ) && ( 'YEARLY'  == $recur['FREQ'] ) &&
+          ( $bysetposYold != $wdate['year'] )) {
+          $bysetpos     = TRUE;
+          $bysetposYold = $wdate['year'];
+        }
+        elseif( isset( $recur['FREQ'] ) && ( 'MONTHLY' == $recur['FREQ'] &&
+         (( $bysetposYold != $wdate['year'] ) || ( $bysetposMold != $wdate['month'] )))) {
+          $bysetpos     = TRUE;
+          $bysetposYold = $wdate['year'];
+          $bysetposMold = $wdate['month'];
+        }
+        elseif( isset( $recur['FREQ'] ) && ( 'WEEKLY'  == $recur['FREQ'] )) {
+          $weekno = (int) date( 'W', mktime( 0, 0, $wkst, $wdate['month'], $wdate['day'], $wdate['year']));
+          if( $bysetposWold != $weekno ) {
+            $bysetposWold = $weekno;
+            $bysetpos     = TRUE;
+          }
+        }
+        elseif( isset( $recur['FREQ'] ) && ( 'DAILY'   == $recur['FREQ'] ) &&
+         (( $bysetposYold != $wdate['year'] )  ||
+          ( $bysetposMold != $wdate['month'] ) ||
+          ( $bysetposDold != $wdate['sday'] ))) {
+          $bysetpos     = TRUE;
+          $bysetposYold = $wdate['year'];
+          $bysetposMold = $wdate['month'];
+          $bysetposDold = $wdate['day'];
+        }
+        if( $bysetpos ) {
+          if( isset( $recur['BYWEEKNO'] )) {
+            $bysetposarr1 = & $bysetposw1;
+            $bysetposarr2 = & $bysetposw2;
+          }
+          else {
+            $bysetposarr1 = & $bysetposymd1;
+            $bysetposarr2 = & $bysetposymd2;
+          }
+          foreach( $recur['BYSETPOS'] as $ix ) {
+            if( 0 > $ix ) // both positive and negative BYSETPOS allowed
+              $ix = ( count( $bysetposarr1 ) + $ix + 1);
+            $ix--;
+            if( isset( $bysetposarr1[$ix] )) {
+              if( $startdatets <= $bysetposarr1[$ix] ) { // only output within period
+                $result[$bysetposarr1[$ix]] = TRUE;
+       //echo "recur ".implode('-',$this->_date_time_string(date('Y-m-d H:i:s',$bysetposarr1[$ix]),6))."<br />\n";//test
+              }
+              $countcnt++;
+            }
+            if( isset( $recur['COUNT'] ) && ( $countcnt >= $recur['COUNT'] ))
+              break;
+          }
+          $bysetposarr1 = $bysetposarr2;
+          $bysetposarr2 = array();
+        }
+      }
+    }
+  }
+  function _recurBYcntcheck( $BYvalue, $upValue, $downValue ) {
+    if( is_array( $BYvalue ) &&
+      ( in_array( $upValue, $BYvalue ) || in_array( $downValue, $BYvalue )))
+      return TRUE;
+    elseif(( $BYvalue == $upValue ) || ( $BYvalue == $downValue ))
+      return TRUE;
+    else
+      return FALSE;
+  }
+  function _recurIntervalIx( $freq, $date, $wkst ) {
+            /* create interval index */
+    switch( $freq ) {
+      case 'YEARLY':
+        $intervalix = $date['year'];
+        break;
+      case 'MONTHLY':
+        $intervalix = $date['year'].'-'.$date['month'];
+        break;
+      case 'WEEKLY':
+        $wdatets    = $this->_date2timestamp( $date );
+        $intervalix = (int) date( 'W', ( $wdatets + $wkst ));
+       break;
+      case 'DAILY':
+           default:
+        $intervalix = $date['year'].'-'.$date['month'].'-'.$date['day'];
+        break;
+    }
+    return $intervalix;
+  }
+/**
+ * convert input format for exrule and rrule to internal format
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.16 - 2008-10-19
+ * @param array $rexrule
+ * @return array
+ */
+  function _setRexrule( $rexrule ) {
+    $input          = array();
+    if( empty( $rexrule ))
+      return $input;
+    foreach( $rexrule as $rexrulelabel => $rexrulevalue ) {
+      $rexrulelabel = strtoupper( $rexrulelabel );
+      if( 'UNTIL'  != $rexrulelabel )
+        $input[$rexrulelabel]   = $rexrulevalue;
+      else {
+        if( $this->_isArrayTimestampDate( $rexrulevalue )) // timestamp date
+          $input[$rexrulelabel] = $this->_timestamp2date( $rexrulevalue, 6 );
+        elseif( $this->_isArrayDate( $rexrulevalue )) // date-time
+          $input[$rexrulelabel] = $this->_date_time_array( $rexrulevalue, 6 );
+        elseif( 8 <= strlen( trim( $rexrulevalue ))) // ex. 2006-08-03 10:12:18
+          $input[$rexrulelabel] = $this->_date_time_string( $rexrulevalue );
+        if(( 3 < count( $input[$rexrulelabel] )) && !isset( $input[$rexrulelabel]['tz'] ))
+          $input[$rexrulelabel]['tz'] = 'Z';
+      }
+    }
+    return $input;
+  }
+/**
+ * convert format for input date to internal date with parameters
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.17 - 2008-10-31
+ * @param mixed $year
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param array $params optional
+ * @param string $caller optional
+ * @return array
+ */
+  function _setDate( $year, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $tz=FALSE, $params=FALSE, $caller=null ) {
+    $input = $parno = null;
+    $localtime = (( 'dtstart' == $caller ) && in_array( $this->objName, array( 'vtimezone', 'standard', 'daylight' ))) ? TRUE : FALSE;
+    if( $this->_isArrayDate( $year )) {
+      if( $localtime ) unset ( $month['VALUE'], $month['TZID'] );
+      $input['params'] = $this->_setParams( $month, array( 'VALUE' => 'DATE-TIME' ));
+      if( isset( $input['params']['TZID'] )) {
+        $input['params']['VALUE'] = 'DATE-TIME';
+        unset( $year['tz'] );
+      }
+      $hitval          = (( !empty( $year['tz'] ) || !empty( $year[6] ))) ? 7 : 6;
+      $parno           = $this->_existRem( $input['params'], 'VALUE', 'DATE-TIME', $hitval );
+      $parno           = $this->_existRem( $input['params'], 'VALUE', 'DATE', 3, count( $year ), $parno );
+      $input['value']  = $this->_date_time_array( $year, $parno );
+    }
+    elseif( $this->_isArrayTimestampDate( $year )) {
+      if( $localtime ) unset ( $month['VALUE'], $month['TZID'] );
+      $input['params'] = $this->_setParams( $month, array( 'VALUE' => 'DATE-TIME' ));
+      if( isset( $input['params']['TZID'] )) {
+        $input['params']['VALUE'] = 'DATE-TIME';
+        unset( $year['tz'] );
+      }
+      $parno           = $this->_existRem( $input['params'], 'VALUE', 'DATE', 3 );
+      $hitval          = ( isset( $year['tz'] )) ? 7 : 6;
+      $parno           = $this->_existRem( $input['params'], 'VALUE', 'DATE-TIME', $hitval, $parno );
+      $input['value']  = $this->_timestamp2date( $year, $parno );
+    }
+    elseif( 8 <= strlen( trim( $year ))) { // ex. 2006-08-03 10:12:18
+      if( $localtime ) unset ( $month['VALUE'], $month['TZID'] );
+      $input['params'] = $this->_setParams( $month, array( 'VALUE' => 'DATE-TIME' ));
+      if( isset( $input['params']['TZID'] )) {
+        $input['params']['VALUE'] = 'DATE-TIME';
+        $parno = 6;
+      }
+      $parno           = $this->_existRem( $input['params'], 'VALUE', 'DATE-TIME', 7, $parno );
+      $parno           = $this->_existRem( $input['params'], 'VALUE', 'DATE', 3, $parno, $parno );
+      $input['value']  = $this->_date_time_string( $year, $parno );
+    }
+    else {
+      if( is_array( $params )) {
+        if( $localtime ) unset ( $params['VALUE'], $params['TZID'] );
+        $input['params'] = $this->_setParams( $params, array( 'VALUE' => 'DATE-TIME' ));
+      }
+      elseif( is_array( $tz )) {
+        $input['params'] = $this->_setParams( $tz,     array( 'VALUE' => 'DATE-TIME' ));
+        $tz = FALSE;
+      }
+      elseif( is_array( $hour )) {
+        $input['params'] = $this->_setParams( $hour,   array( 'VALUE' => 'DATE-TIME' ));
+        $hour = $min = $sec = $tz = FALSE;
+      }
+      if( isset( $input['params']['TZID'] )) {
+        $tz            = null;
+        $input['params']['VALUE'] = 'DATE-TIME';
+      }
+      $parno           = $this->_existRem( $input['params'], 'VALUE', 'DATE', 3 );
+      $hitval          = ( !empty( $tz )) ? 7 : 6;
+      $parno           = $this->_existRem( $input['params'], 'VALUE', 'DATE-TIME', $hitval, $parno, $parno );
+      $input['value']  = array( 'year'  => $year, 'month' => $month, 'day'   => $day );
+      if( 3 != $parno ) {
+        $input['value']['hour'] = ( $hour ) ? $hour : '0';
+        $input['value']['min']  = ( $min )  ? $min  : '0';
+        $input['value']['sec']  = ( $sec )  ? $sec  : '0';
+        if( !empty( $tz ))
+          $input['value']['tz'] = $tz;
+      }
+    }
+    if( 3 == $parno ) {
+      $input['params']['VALUE'] = 'DATE';
+      unset( $input['value']['tz'] );
+      unset( $input['params']['TZID'] );
+    }
+    elseif( isset( $input['params']['TZID'] ))
+      unset( $input['value']['tz'] );
+    if( $localtime ) unset( $input['value']['tz'], $input['params']['TZID'] );
+    if( isset( $input['value']['tz'] ))
+      $input['value']['tz'] = (string) $input['value']['tz'];
+    if( !empty( $input['value']['tz'] ) && ( 'Z' != $input['value']['tz'] ) &&
+      ( !$this->_isOffset( $input['value']['tz'] )))
+      $input['params']['TZID'] = $input['value']['tz'];
+    return $input;
+  }
+/**
+ * convert format for input date (UTC) to internal date with parameters
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.17 - 2008-10-31
+ * @param mixed $year
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param array $params optional
+ * @return array
+ */
+  function _setDate2( $year, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $params=FALSE ) {
+    $input = null;
+    if( $this->_isArrayDate( $year )) {
+      $input['value']  = $this->_date_time_array( $year, 7 );
+      $input['params'] = $this->_setParams( $month, array( 'VALUE' => 'DATE-TIME' ) );
+    }
+    elseif( $this->_isArrayTimestampDate( $year )) {
+      $input['value']  = $this->_timestamp2date( $year, 7 );
+      $input['params'] = $this->_setParams( $month, array( 'VALUE' => 'DATE-TIME' ) );
+    }
+    elseif( 8 <= strlen( trim( $year ))) { // ex. 2006-08-03 10:12:18
+      $input['value']  = $this->_date_time_string( $year, 7 );
+      $input['params'] = $this->_setParams( $month, array( 'VALUE' => 'DATE-TIME' ) );
+    }
+    else {
+      $input['value']  = array( 'year'  => $year
+                              , 'month' => $month
+                              , 'day'   => $day
+                              , 'hour'  => $hour
+                              , 'min'   => $min
+                              , 'sec'   => $sec );
+      $input['params'] = $this->_setParams( $params, array( 'VALUE' => 'DATE-TIME' ));
+    }
+    $parno = $this->_existRem( $input['params'], 'VALUE', 'DATE-TIME', 7 ); // remove default
+    if( !isset( $input['value']['hour'] ))
+      $input['value']['hour'] = 0;
+    if( !isset( $input['value']['min'] ))
+      $input['value']['min'] = 0;
+    if( !isset( $input['value']['sec'] ))
+      $input['value']['sec'] = 0;
+    if( !isset( $input['value']['tz'] ) || !$this->_isOffset( $input['value']['tz'] ))
+      $input['value']['tz'] = 'Z';
+    return $input;
+  }
+/**
+ * check index and set (an indexed) content in multiple value array
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-06
+ * @param array $valArr
+ * @param mixed $value
+ * @param array $params
+ * @param array $defaults
+ * @param int $index
+ * @return void
+ */
+  function _setMval( & $valArr, $value, $params=FALSE, $defaults=FALSE, $index=FALSE ) {
+    if( !is_array( $valArr )) $valArr = array();
+    if( $index )
+      $index = $index - 1;
+    elseif( 0 < count( $valArr )) {
+      $index = end( array_keys( $valArr ));
+      $index += 1;
+    }
+    else
+      $index = 0;
+    $valArr[$index] = array( 'value' => $value, 'params' => $this->_setParams( $params, $defaults ));
+    ksort( $valArr );
+  }
+/**
+ * set input (formatted) parameters- component property attributes
+ *
+ * default parameters can be set, if missing
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 1.x.x - 2007-05-01
+ * @param array $params
+ * @param array $defaults
+ * @return array
+ */
+  function _setParams( $params, $defaults=FALSE ) {
+    if( !is_array( $params))
+      $params = array();
+    $input = array();
+    foreach( $params as $paramKey => $paramValue ) {
+      if( is_array( $paramValue )) {
+        foreach( $paramValue as $pkey => $pValue ) {
+          if(( '"' == substr( $pValue, 0, 1 )) && ( '"' == substr( $pValue, -1 )))
+            $paramValue[$pkey] = substr( $pValue, 1, ( strlen( $pValue ) - 2 ));
+        }
+      }
+      elseif(( '"' == substr( $paramValue, 0, 1 )) && ( '"' == substr( $paramValue, -1 )))
+        $paramValue = substr( $paramValue, 1, ( strlen( $paramValue ) - 2 ));
+      if( 'VALUE' == strtoupper( $paramKey ))
+        $input['VALUE']                 = strtoupper( $paramValue );
+      else
+        $input[strtoupper( $paramKey )] = $paramValue;
+    }
+    if( is_array( $defaults )) {
+      foreach( $defaults as $paramKey => $paramValue ) {
+        if( !isset( $input[$paramKey] ))
+          $input[$paramKey] = $paramValue;
+      }
+    }
+    return (0 < count( $input )) ? $input : null;
+  }
+/**
+ * step date, return updated date, array and timpstamp
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.16 - 2008-10-18
+ * @param array $date, date to step
+ * @param int $timestamp
+ * @param array $step, default array( 'day' => 1 )
+ * @return void
+ */
+  function _stepdate( &$date, &$timestamp, $step=array( 'day' => 1 )) {
+    foreach( $step as $stepix => $stepvalue )
+      $date[$stepix] += $stepvalue;
+    $timestamp  = $this->_date2timestamp( $date );
+    $date       = $this->_timestamp2date( $timestamp, 6 );
+    foreach( $date as $k => $v ) {
+      if( ctype_digit( $v ))
+        $date[$k] = (int) $v;
+    }
+  }
+/**
+ * convert timestamp to date array
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.16 - 2008-11-01
+ * @param mixed $timestamp
+ * @param int $parno
+ * @return array
+ */
+  function _timestamp2date( $timestamp, $parno=6 ) {
+    if( is_array( $timestamp )) {
+      if(( 7 == $parno ) && !empty( $timestamp['tz'] ))
+        $tz = $timestamp['tz'];
+      $timestamp = $timestamp['timestamp'];
+    }
+    $output = array( 'year'  => date( 'Y', $timestamp )
+                   , 'month' => date( 'm', $timestamp )
+                   , 'day'   => date( 'd', $timestamp ));
+    if( 3 != $parno ) {
+             $output['hour'] =  date( 'H', $timestamp );
+             $output['min']  =  date( 'i', $timestamp );
+             $output['sec']  =  date( 's', $timestamp );
+      if( isset( $tz ))
+        $output['tz'] = $tz;
+    }
+    return $output;
+  }
+/**
+ * convert (numeric) local time offset to seconds correcting localtime to GMT
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.16 - 2008-10-19
+ * @param string $offset
+ * @return integer
+ */
+  function _tz2offset( $tz ) {
+    $tz           = trim( (string) $tz );
+    $offset       = 0;
+    if(((     5  != strlen( $tz )) && ( 7  != strlen( $tz ))) ||
+       ((    '+' != substr( $tz, 0, 1 )) && ( '-' != substr( $tz, 0, 1 ))) ||
+       (( '0000' >= substr( $tz, 1, 4 )) && ( '9999' < substr( $tz, 1, 4 ))) ||
+           (( 7  == strlen( $tz )) && ( '00' > substr( $tz, 5, 2 )) && ( '99' < substr( $tz, 5, 2 ))))
+      return $offset;
+    $hours2sec    = (int) substr( $tz, 1, 2 ) * 3600;
+    $min2sec      = (int) substr( $tz, 3, 2 ) *   60;
+    $sec          = ( 7  == strlen( $tz )) ? (int) substr( $tz, -2 ) : '00';
+    $offset       = $hours2sec + $min2sec + $sec;
+    $offset       = ('-' == substr( $tz, 0, 1 )) ? $offset : -1 * $offset;
+    return $offset;
+  }
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ * get general component config variables or info about subcomponents
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-02
+ * @param string $config
+ * @return value
+ */
+  function getConfig( $config ) {
+    switch( strtoupper( $config )) {
+      case 'ALLOWEMPTY':
+        return $this->allowEmpty;
+        break;
+      case 'COMPSINFO':
+        unset( $this->compix );
+        $info = array();
+        if( isset( $this->components )) {
+          foreach( $this->components as $cix => $component ) {
+            if( empty( $component )) continue;
+            unset( $component->propix );
+            $info[$cix]['ordno'] = $cix + 1;
+            $info[$cix]['type']  = $component->objName;
+            $info[$cix]['uid']   = $component->getProperty( 'uid' );
+            $info[$cix]['props'] = $component->getConfig( 'propinfo' );
+            $info[$cix]['sub']   = $component->getConfig( 'compsinfo' );
+            unset( $component->propix );
+          }
+        }
+        return $info;
+        break;
+      case 'FORMAT':
+        return $this->format;
+        break;
+      case 'LANGUAGE':
+         // get language for calendar component as defined in [RFC 1766]
+        return $this->language;
+        break;
+      case 'NL':
+      case 'NEWLINECHAR':
+        return $this->nl;
+        break;
+      case 'PROPINFO':
+        $output = array();
+        if( !in_array( $this->objName, array( 'valarm', 'vtimezone', 'standard', 'daylight' ))) {
+          if( empty( $this->uid['value'] )) $this->_makeuid();
+                                              $output['UID']              = 1;
+        }
+        if( !empty( $this->dtstamp ))         $output['DTSTAMP']          = 1;
+        if( !empty( $this->summary ))         $output['SUMMARY']          = 1;
+        if( !empty( $this->description ))     $output['DESCRIPTION']      = count( $this->description );
+        if( !empty( $this->dtstart ))         $output['DTSTART']          = 1;
+        if( !empty( $this->dtend ))           $output['DTEND']            = 1;
+        if( !empty( $this->due ))             $output['DUE']              = 1;
+        if( !empty( $this->duration ))        $output['DURATION']         = 1;
+        if( !empty( $this->rrule ))           $output['RRULE']            = count( $this->rrule );
+        if( !empty( $this->rdate ))           $output['RDATE']            = count( $this->rdate );
+        if( !empty( $this->exdate ))          $output['EXDATE']           = count( $this->exdate );
+        if( !empty( $this->exrule ))          $output['EXRULE']           = count( $this->exrule );
+        if( !empty( $this->action ))          $output['ACTION']           = 1;
+        if( !empty( $this->attach ))          $output['ATTACH']           = count( $this->attach );
+        if( !empty( $this->attendee ))        $output['ATTENDEE']         = count( $this->attendee );
+        if( !empty( $this->categories ))      $output['CATEGORIES']       = count( $this->categories );
+        if( !empty( $this->class ))           $output['CLASS']            = 1;
+        if( !empty( $this->comment ))         $output['COMMENT']          = count( $this->comment );
+        if( !empty( $this->completed ))       $output['COMPLETED']        = 1;
+        if( !empty( $this->contact ))         $output['CONTACT']          = count( $this->contact );
+        if( !empty( $this->created ))         $output['CREATED']          = 1;
+        if( !empty( $this->freebusy ))        $output['FREEBUSY']         = count( $this->freebusy );
+        if( !empty( $this->geo ))             $output['GEO']              = 1;
+        if( !empty( $this->lastmodified ))    $output['LAST-MODIFIED']    = 1;
+        if( !empty( $this->location ))        $output['LOCATION']         = 1;
+        if( !empty( $this->organizer ))       $output['ORGANIZER']        = 1;
+        if( !empty( $this->percentcomplete )) $output['PERCENT-COMPLETE'] = 1;
+        if( !empty( $this->priority ))        $output['PRIORITY']         = 1;
+        if( !empty( $this->recurrenceid ))    $output['RECURRENCE-ID']    = 1;
+        if( !empty( $this->relatedto ))       $output['RELATED-TO']       = count( $this->relatedto );
+        if( !empty( $this->repeat ))          $output['REPEAT']           = 1;
+        if( !empty( $this->requeststatus ))   $output['REQUEST-STATUS']   = count( $this->requeststatus );
+        if( !empty( $this->resources ))       $output['RESOURCES']        = count( $this->resources );
+        if( !empty( $this->sequence ))        $output['SEQUENCE']         = 1;
+        if( !empty( $this->status ))          $output['STATUS']           = 1;
+        if( !empty( $this->transp ))          $output['TRANSP']           = 1;
+        if( !empty( $this->trigger ))         $output['TRIGGER']          = 1;
+        if( !empty( $this->tzid ))            $output['TZID']             = 1;
+        if( !empty( $this->tzname ))          $output['TZNAME']           = count( $this->tzname );
+        if( !empty( $this->tzoffsetfrom ))    $output['TZOFFSETTFROM']    = 1;
+        if( !empty( $this->tzoffsetto ))      $output['TZOFFSETTO']       = 1;
+        if( !empty( $this->tzurl ))           $output['TZURL']            = 1;
+        if( !empty( $this->url ))             $output['URL']              = 1;
+        if( !empty( $this->xprop ))           $output['X-PROP']           = count( $this->xprop );
+        return $output;
+        break;
+      case 'UNIQUE_ID':
+        if( empty( $this->unique_id ))
+          $this->unique_id  = ( isset( $_SERVER['SERVER_NAME'] )) ? gethostbyname( $_SERVER['SERVER_NAME'] ) : 'localhost';
+        return $this->unique_id;
+        break;
+    }
+  }
+/**
+ * general component config setting
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.8 - 2008-10-24
+ * @param string $config
+ * @param string $value
+ * @return void
+ */
+  function setConfig( $config, $value ) {
+    $res = FALSE;
+    switch( strtoupper( $config )) {
+      case 'ALLOWEMPTY':
+        $this->allowEmpty = $value;
+        $subcfg = array( 'ALLOWEMPTY' => $value );
+        $res    = TRUE;
+        break;
+      case 'FORMAT':
+        $value  = trim( $value );
+        $this->format = $value;
+        $this->_createFormat();
+        $subcfg = array( 'FORMAT' => $value );
+        $res    = TRUE;
+        break;
+      case 'LANGUAGE':
+         // set language for calendar component as defined in [RFC 1766]
+        $value  = trim( $value );
+        $this->language = $value;
+        $subcfg = array( 'LANGUAGE' => $value );
+        $res    = TRUE;
+        break;
+      case 'NL':
+      case 'NEWLINECHAR':
+        $this->nl = $value;
+        $subcfg = array( 'NL' => $value );
+        $res    = TRUE;
+        break;
+      case 'UNIQUE_ID':
+        $value  = trim( $value );
+        $this->unique_id = $value;
+        $subcfg = array( 'UNIQUE_ID' => $value );
+        $res    = TRUE;
+        break;
+    }
+    if( !$res ) return FALSE;
+    if( isset( $subcfg ) && !empty( $this->components )) {
+      foreach( $subcfg as $cfgkey => $cfgvalue ) {
+        foreach( $this->components as $cix => $component ) {
+          $res = $component->setConfig( $cfgkey, $cfgvalue );
+          if( !$res )
+            break 2;
+          $this->components[$cix] = $component; // PHP4 compliant
+        }
+      }
+    }
+    return $res;
+  }
+/*********************************************************************************/
+/**
+ * delete component property value
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-14
+ * @param string $propName
+ * @param int @propix, optional, if specific property is wanted in case of multiply occurences
+ * @return bool, if successfull delete TRUE
+ */
+  function deleteProperty( $propName, $propix=FALSE ) {
+    if( $this->_notExistProp( $propName )) return FALSE;
+    $propName = strtoupper( $propName );
+    if( in_array( $propName, array( 'ATTACH',   'ATTENDEE', 'CATEGORIES', 'COMMENT',   'CONTACT', 'DESCRIPTION',    'EXDATE', 'EXRULE',
+                                    'FREEBUSY', 'RDATE',    'RELATED-TO', 'RESOURCES', 'RRULE',   'REQUEST-STATUS', 'TZNAME', 'X-PROP'  ))) {
+      if( !$propix )
+        $propix = ( isset( $this->propdelix[$propName] )) ? $this->propdelix[$propName] + 2 : 1;
+      $this->propdelix[$propName] = --$propix;
+    }
+    $return = FALSE;
+    switch( $propName ) {
+      case 'ACTION':
+        if( !empty( $this->action )) {
+          $this->action = '';
+          $return = TRUE;
+        }
+        break;
+      case 'ATTACH':
+        return $this->deletePropertyM( $this->attach, $propix );
+        break;
+      case 'ATTENDEE':
+        return $this->deletePropertyM( $this->attendee, $propix );
+        break;
+      case 'CATEGORIES':
+        return $this->deletePropertyM( $this->categories, $propix );
+        break;
+      case 'CLASS':
+        if( !empty( $this->class )) {
+          $this->class = '';
+          $return = TRUE;
+        }
+        break;
+      case 'COMMENT':
+        return $this->deletePropertyM( $this->comment, $propix );
+        break;
+      case 'COMPLETED':
+        if( !empty( $this->completed )) {
+          $this->completed = '';
+          $return = TRUE;
+        }
+        break;
+      case 'CONTACT':
+        return $this->deletePropertyM( $this->contact, $propix );
+        break;
+      case 'CREATED':
+        if( !empty( $this->created )) {
+          $this->created = '';
+          $return = TRUE;
+        }
+        break;
+      case 'DESCRIPTION':
+        return $this->deletePropertyM( $this->description, $propix );
+        break;
+      case 'DTEND':
+        if( !empty( $this->dtend )) {
+          $this->dtend = '';
+          $return = TRUE;
+        }
+        break;
+      case 'DTSTAMP':
+        if( in_array( $this->objName, array( 'valarm', 'vtimezone', 'standard', 'daylight' )))
+          return FALSE;
+        if( !empty( $this->dtstamp )) {
+          $this->dtstamp = '';
+          $return = TRUE;
+        }
+        break;
+      case 'DTSTART':
+        if( !empty( $this->dtstart )) {
+          $this->dtstart = '';
+          $return = TRUE;
+        }
+        break;
+      case 'DUE':
+        if( !empty( $this->due )) {
+          $this->due = '';
+          $return = TRUE;
+        }
+        break;
+      case 'DURATION':
+        if( !empty( $this->duration )) {
+          $this->duration = '';
+          $return = TRUE;
+        }
+        break;
+      case 'EXDATE':
+        return $this->deletePropertyM( $this->exdate, $propix );
+        break;
+      case 'EXRULE':
+        return $this->deletePropertyM( $this->exrule, $propix );
+        break;
+      case 'FREEBUSY':
+        return $this->deletePropertyM( $this->freebusy, $propix );
+        break;
+      case 'GEO':
+        if( !empty( $this->geo )) {
+          $this->geo = '';
+          $return = TRUE;
+        }
+        break;
+      case 'LAST-MODIFIED':
+        if( !empty( $this->lastmodified )) {
+          $this->lastmodified = '';
+          $return = TRUE;
+        }
+        break;
+      case 'LOCATION':
+        if( !empty( $this->location )) {
+          $this->location = '';
+          $return = TRUE;
+        }
+        break;
+      case 'ORGANIZER':
+        if( !empty( $this->organizer )) {
+          $this->organizer = '';
+          $return = TRUE;
+        }
+        break;
+      case 'PERCENT-COMPLETE':
+        if( !empty( $this->percentcomplete )) {
+          $this->percentcomplete = '';
+          $return = TRUE;
+        }
+        break;
+      case 'PRIORITY':
+        if( !empty( $this->priority )) {
+          $this->priority = '';
+          $return = TRUE;
+        }
+        break;
+      case 'RDATE':
+        return $this->deletePropertyM( $this->rdate, $propix );
+        break;
+      case 'RECURRENCE-ID':
+        if( !empty( $this->recurrenceid )) {
+          $this->recurrenceid = '';
+          $return = TRUE;
+        }
+        break;
+      case 'RELATED-TO':
+        return $this->deletePropertyM( $this->relatedto, $propix );
+        break;
+      case 'REPEAT':
+        if( !empty( $this->repeat )) {
+          $this->repeat = '';
+          $return = TRUE;
+        }
+        break;
+      case 'REQUEST-STATUS':
+        return $this->deletePropertyM( $this->requeststatus, $propix );
+        break;
+      case 'RESOURCES':
+        return $this->deletePropertyM( $this->resources, $propix );
+        break;
+      case 'RRULE':
+        return $this->deletePropertyM( $this->rrule, $propix );
+        break;
+      case 'SEQUENCE':
+        if( !empty( $this->sequence )) {
+          $this->sequence = '';
+          $return = TRUE;
+        }
+        break;
+      case 'STATUS':
+        if( !empty( $this->status )) {
+          $this->status = '';
+          $return = TRUE;
+        }
+        break;
+      case 'SUMMARY':
+        if( !empty( $this->summary )) {
+          $this->summary = '';
+          $return = TRUE;
+        }
+        break;
+      case 'TRANSP':
+        if( !empty( $this->transp )) {
+          $this->transp = '';
+          $return = TRUE;
+        }
+        break;
+      case 'TRIGGER':
+        if( !empty( $this->trigger )) {
+          $this->trigger = '';
+          $return = TRUE;
+        }
+        break;
+      case 'TZID':
+        if( !empty( $this->tzid )) {
+          $this->tzid = '';
+          $return = TRUE;
+        }
+        break;
+      case 'TZNAME':
+        return $this->deletePropertyM( $this->tzname, $propix );
+        break;
+      case 'TZOFFSETFROM':
+        if( !empty( $this->tzoffsetfrom )) {
+          $this->tzoffsetfrom = '';
+          $return = TRUE;
+        }
+        break;
+      case 'TZOFFSETTO':
+        if( !empty( $this->tzoffsetto )) {
+          $this->tzoffsetto = '';
+          $return = TRUE;
+        }
+        break;
+      case 'TZURL':
+        if( !empty( $this->tzurl )) {
+          $this->tzurl = '';
+          $return = TRUE;
+        }
+        break;
+      case 'UID':
+        if( in_array( $this->objName, array( 'valarm', 'vtimezone', 'standard', 'daylight' )))
+          return FALSE;
+        if( !empty( $this->uid )) {
+          $this->uid = '';
+          $return = TRUE;
+        }
+        break;
+      case 'URL':
+        if( !empty( $this->url )) {
+          $this->url = '';
+          $return = TRUE;
+        }
+        break;
+      default:
+        $reduced = '';
+        if( $propName != 'X-PROP' ) {
+          if( !isset( $this->xprop[$propName] )) return FALSE;
+          foreach( $this->xprop as $k => $a ) {
+            if(( $k != $propName ) && !empty( $a ))
+              $reduced[$k] = $a;
+          }
+        }
+        else {
+          if( count( $this->xprop ) <= $propix )  return FALSE;
+          $xpropno = 0;
+          foreach( $this->xprop as $xpropkey => $xpropvalue ) {
+            if( $propix != $xpropno )
+              $reduced[$xpropkey] = $xpropvalue;
+            $xpropno++;
+          }
+        }
+        $this->xprop = $reduced;
+        return TRUE;
+    }
+    return $return;
+  }
+/*********************************************************************************/
+/**
+ * delete component property value, fixing components with multiple occurencies
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.5 - 2008-11-07
+ * @param array $multiprop, reference to a component property
+ * @param int @propix, default 0
+ * @return bool TRUE
+ */
+  function deletePropertyM( & $multiprop, $propix=0 ) {
+    if( !isset( $multiprop[$propix])) return FALSE;
+    unset( $multiprop[$propix] );
+    if( empty( $multiprop )) $multiprop = '';
+    return ( isset( $this->multiprop[$propix] )) ? FALSE : TRUE;
+  }
+/**
+ * get component property value/params
+ *
+ * if property has multiply values, consequtive function calls are needed
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-02
+ * @param string $propName, optional
+ * @param int @propix, optional, if specific property is wanted in case of multiply occurences
+ * @param bool $inclParam=FALSE
+ * @param bool $specform=FALSE
+ * @return mixed
+ */
+  function getProperty( $propName=FALSE, $propix=FALSE, $inclParam=FALSE, $specform=FALSE ) {
+    if( $this->_notExistProp( $propName )) return FALSE;
+    $propName = ( $propName ) ? strtoupper( $propName ) : 'X-PROP';
+    if( in_array( $propName, array( 'ATTACH',   'ATTENDEE', 'CATEGORIES', 'COMMENT',   'CONTACT', 'DESCRIPTION',    'EXDATE', 'EXRULE',
+                                    'FREEBUSY', 'RDATE',    'RELATED-TO', 'RESOURCES', 'RRULE',   'REQUEST-STATUS', 'TZNAME', 'X-PROP'  ))) {
+      if( !$propix )
+        $propix = ( isset( $this->propix[$propName] )) ? $this->propix[$propName] + 2 : 1;
+      $this->propix[$propName] = --$propix;
+    }
+    switch( $propName ) {
+      case 'ACTION':
+        if( !empty( $this->action['value'] )) return ( $inclParam ) ? $this->action : $this->action['value'];
+        break;
+      case 'ATTACH':
+        if( !isset( $this->attach[$propix] )) return FALSE;
+        return ( $inclParam ) ? $this->attach[$propix] : $this->attach[$propix]['value'];
+        break;
+      case 'ATTENDEE':
+        if( !isset( $this->attendee[$propix] )) return FALSE;
+        return ( $inclParam ) ? $this->attendee[$propix] : $this->attendee[$propix]['value'];
+        break;
+      case 'CATEGORIES':
+        if( !isset( $this->categories[$propix] )) return FALSE;
+        return ( $inclParam ) ? $this->categories[$propix] : $this->categories[$propix]['value'];
+        break;
+      case 'CLASS':
+        if( !empty( $this->class['value'] )) return ( $inclParam ) ? $this->class : $this->class['value'];
+        break;
+      case 'COMMENT':
+        if( !isset( $this->comment[$propix] )) return FALSE;
+        return ( $inclParam ) ? $this->comment[$propix] : $this->comment[$propix]['value'];
+        break;
+      case 'COMPLETED':
+        if( !empty( $this->completed['value'] )) return ( $inclParam ) ? $this->completed : $this->completed['value'];
+        break;
+      case 'CONTACT':
+        if( !isset( $this->contact[$propix] )) return FALSE;
+        return ( $inclParam ) ? $this->contact[$propix] : $this->contact[$propix]['value'];
+        break;
+      case 'CREATED':
+        if( !empty( $this->created['value'] )) return ( $inclParam ) ? $this->created : $this->created['value'];
+        break;
+      case 'DESCRIPTION':
+        if( !isset( $this->description[$propix] )) return FALSE;
+        return ( $inclParam ) ? $this->description[$propix] : $this->description[$propix]['value'];
+        break;
+      case 'DTEND':
+        if( !empty( $this->dtend['value'] )) return ( $inclParam ) ? $this->dtend : $this->dtend['value'];
+        break;
+      case 'DTSTAMP':
+        if( in_array( $this->objName, array( 'valarm', 'vtimezone', 'standard', 'daylight' )))
+          return;
+        if( !isset( $this->dtstamp['value'] ))
+          $this->_makeDtstamp();
+        return ( $inclParam ) ? $this->dtstamp : $this->dtstamp['value'];
+        break;
+      case 'DTSTART':
+        if( !empty( $this->dtstart['value'] )) return ( $inclParam ) ? $this->dtstart : $this->dtstart['value'];
+        break;
+      case 'DUE':
+        if( !empty( $this->due['value'] )) return ( $inclParam ) ? $this->due : $this->due['value'];
+        break;
+      case 'DURATION':
+        if( !isset( $this->duration['value'] )) return FALSE;
+        $value = ( $specform ) ? $this->duration2date() : $this->duration['value'];
+        return ( $inclParam ) ? array( 'value' => $value, 'params' =>  $this->duration['params'] ) : $value;
+        break;
+      case 'EXDATE':
+        if( !isset( $this->exdate[$propix] )) return FALSE;
+        return ( $inclParam ) ? $this->exdate[$propix] : $this->exdate[$propix]['value'];
+        break;
+      case 'EXRULE':
+        if( !isset( $this->exrule[$propix] )) return FALSE;
+        return ( $inclParam ) ? $this->exrule[$propix] : $this->exrule[$propix]['value'];
+        break;
+      case 'FREEBUSY':
+        if( !isset( $this->freebusy[$propix] )) return FALSE;
+        return ( $inclParam ) ? $this->freebusy[$propix] : $this->freebusy[$propix]['value'];
+        break;
+      case 'GEO':
+        if( !empty( $this->geo['value'] )) return ( $inclParam ) ? $this->geo : $this->geo['value'];
+        break;
+      case 'LAST-MODIFIED':
+        if( !empty( $this->lastmodified['value'] )) return ( $inclParam ) ? $this->lastmodified : $this->lastmodified['value'];
+        break;
+      case 'LOCATION':
+        if( !empty( $this->location['value'] )) return ( $inclParam ) ? $this->location : $this->location['value'];
+        break;
+      case 'ORGANIZER':
+        if( !empty( $this->organizer['value'] )) return ( $inclParam ) ? $this->organizer : $this->organizer['value'];
+        break;
+      case 'PERCENT-COMPLETE':
+        if( !empty( $this->percentcomplete['value'] )) return ( $inclParam ) ? $this->percentcomplete : $this->percentcomplete['value'];
+        break;
+      case 'PRIORITY':
+        if( !empty( $this->priority['value'] )) return ( $inclParam ) ? $this->priority : $this->priority['value'];
+        break;
+      case 'RDATE':
+        if( !isset( $this->rdate[$propix] )) return FALSE;
+        return ( $inclParam ) ? $this->rdate[$propix] : $this->rdate[$propix]['value'];
+        break;
+      case 'RECURRENCE-ID':
+        if( !empty( $this->recurrenceid['value'] )) return ( $inclParam ) ? $this->recurrenceid : $this->recurrenceid['value'];
+        break;
+      case 'RELATED-TO':
+        if( !isset( $this->relatedto[$propix] )) return FALSE;
+        return ( $inclParam ) ? $this->relatedto[$propix] : $this->relatedto[$propix]['value'];
+        break;
+      case 'REPEAT':
+        if( !empty( $this->repeat['value'] )) return ( $inclParam ) ? $this->repeat : $this->repeat['value'];
+        break;
+      case 'REQUEST-STATUS':
+        if( !isset( $this->requeststatus[$propix] )) return FALSE;
+        return ( $inclParam ) ? $this->requeststatus[$propix] : $this->requeststatus[$propix]['value'];
+        break;
+      case 'RESOURCES':
+        if( !isset( $this->resources[$propix] )) return FALSE;
+        return ( $inclParam ) ? $this->resources[$propix] : $this->resources[$propix]['value'];
+        break;
+      case 'RRULE':
+        if( !isset( $this->rrule[$propix] )) return FALSE;
+        return ( $inclParam ) ? $this->rrule[$propix] : $this->rrule[$propix]['value'];
+        break;
+      case 'SEQUENCE':
+        if( !empty( $this->sequence['value'] )) return ( $inclParam ) ? $this->sequence : $this->sequence['value'];
+        break;
+      case 'STATUS':
+        if( !empty( $this->status['value'] )) return ( $inclParam ) ? $this->status : $this->status['value'];
+        break;
+      case 'SUMMARY':
+        if( !empty( $this->summary['value'] )) return ( $inclParam ) ? $this->summary : $this->summary['value'];
+        break;
+      case 'TRANSP':
+        if( !empty( $this->transp['value'] )) return ( $inclParam ) ? $this->transp : $this->transp['value'];
+        break;
+      case 'TRIGGER':
+        if( !empty( $this->trigger['value'] )) return ( $inclParam ) ? $this->trigger : $this->trigger['value'];
+        break;
+      case 'TZID':
+        if( !empty( $this->tzid['value'] )) return ( $inclParam ) ? $this->tzid : $this->tzid['value'];
+        break;
+      case 'TZNAME':
+        if( !isset( $this->tzname[$propix] )) return FALSE;
+        return ( $inclParam ) ? $this->tzname[$propix] : $this->tzname[$propix]['value'];
+        break;
+      case 'TZOFFSETFROM':
+        if( !empty( $this->tzoffsetfrom['value'] )) return ( $inclParam ) ? $this->tzoffsetfrom : $this->tzoffsetfrom['value'];
+        break;
+      case 'TZOFFSETTO':
+        if( !empty( $this->tzoffsetto['value'] )) return ( $inclParam ) ? $this->tzoffsetto : $this->tzoffsetto['value'];
+        break;
+      case 'TZURL':
+        if( !empty( $this->tzurl['value'] )) return ( $inclParam ) ? $this->tzurl : $this->tzurl['value'];
+        break;
+      case 'UID':
+        if( in_array( $this->objName, array( 'valarm', 'vtimezone', 'standard', 'daylight' )))
+          return FALSE;
+        if( empty( $this->uid['value'] ))
+          $this->_makeuid();
+        return ( $inclParam ) ? $this->uid : $this->uid['value'];
+        break;
+      case 'URL':
+        if( !empty( $this->url['value'] )) return ( $inclParam ) ? $this->url : $this->url['value'];
+        break;
+      default:
+        if( $propName != 'X-PROP' ) {
+          if( !isset( $this->xprop[$propName] )) return FALSE;
+          return ( $inclParam ) ? array( $propName, $this->xprop[$propName] )
+                                : array( $propName, $this->xprop[$propName]['value'] );
+        }
+        else {
+          if( empty( $this->xprop )) return FALSE;
+          $xpropno = 0;
+          foreach( $this->xprop as $xpropkey => $xpropvalue ) {
+            if( $propix == $xpropno )
+              return ( $inclParam ) ? array( $xpropkey, $this->xprop[$xpropkey] )
+                                    : array( $xpropkey, $this->xprop[$xpropkey]['value'] );
+            else
+              $xpropno++;
+          }
+          return FALSE; // not found ??
+        }
+    }
+    return FALSE;
+  }
+/**
+ * general component property setting
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-05
+ * @param mixed $args variable number of function arguments,
+ *                    first argument is ALWAYS component name,
+ *                    second ALWAYS component value!
+ * @return void
+ */
+  function setProperty() {
+    $numargs    = func_num_args();
+    if( 1 > $numargs ) return FALSE;
+    $arglist    = func_get_args();
+    if( $this->_notExistProp( $arglist[0] )) return FALSE;
+    if( !$this->getConfig( 'allowEmpty' ) && ( !isset( $arglist[1] ) || empty( $arglist[1] )))
+      return FALSE;
+    $arglist[0] = strtoupper( $arglist[0] );
+    for( $argix=$numargs; $argix < 12; $argix++ ) {
+      if( !isset( $arglist[$argix] ))
+        $arglist[$argix] = null;
+    }
+    switch( $arglist[0] ) {
+      case 'ACTION':
+        return $this->setAction( $arglist[1], $arglist[2] );
+      case 'ATTACH':
+        return $this->setAttach( $arglist[1], $arglist[2], $arglist[3] );
+      case 'ATTENDEE':
+        return $this->setAttendee( $arglist[1], $arglist[2], $arglist[3] );
+      case 'CATEGORIES':
+        return $this->setCategories( $arglist[1], $arglist[2], $arglist[3] );
+      case 'CLASS':
+        return $this->setClass( $arglist[1], $arglist[2] );
+      case 'COMMENT':
+        return $this->setComment( $arglist[1], $arglist[2], $arglist[3] );
+      case 'COMPLETED':
+        return $this->setCompleted( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6], $arglist[7] );
+      case 'CONTACT':
+        return $this->setContact( $arglist[1], $arglist[2], $arglist[3] );
+      case 'CREATED':
+        return $this->setCreated( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6], $arglist[7] );
+      case 'DESCRIPTION':
+        return $this->setDescription( $arglist[1], $arglist[2], $arglist[3] );
+      case 'DTEND':
+        return $this->setDtend( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6], $arglist[7], $arglist[8] );
+      case 'DTSTAMP':
+        return $this->setDtstamp( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6], $arglist[7] );
+      case 'DTSTART':
+        return $this->setDtstart( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6], $arglist[7], $arglist[8] );
+      case 'DUE':
+        return $this->setDue( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6], $arglist[7], $arglist[8] );
+      case 'DURATION':
+        return $this->setDuration( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6] );
+      case 'EXDATE':
+        return $this->setExdate( $arglist[1], $arglist[2], $arglist[3] );
+      case 'EXRULE':
+        return $this->setExrule( $arglist[1], $arglist[2], $arglist[3] );
+      case 'FREEBUSY':
+        return $this->setFreebusy( $arglist[1], $arglist[2], $arglist[3], $arglist[4] );
+      case 'GEO':
+        return $this->setGeo( $arglist[1], $arglist[2], $arglist[3] );
+      case 'LAST-MODIFIED':
+        return $this->setLastModified( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6], $arglist[7] );
+      case 'LOCATION':
+        return $this->setLocation( $arglist[1], $arglist[2] );
+      case 'ORGANIZER':
+        return $this->setOrganizer( $arglist[1], $arglist[2] );
+      case 'PERCENT-COMPLETE':
+        return $this->setPercentComplete( $arglist[1], $arglist[2] );
+      case 'PRIORITY':
+        return $this->setPriority( $arglist[1], $arglist[2] );
+      case 'RDATE':
+        return $this->setRdate( $arglist[1], $arglist[2], $arglist[3] );
+      case 'RECURRENCE-ID':
+       return $this->setRecurrenceid( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6], $arglist[7], $arglist[8] );
+      case 'RELATED-TO':
+        return $this->setRelatedTo( $arglist[1], $arglist[2], $arglist[3] );
+      case 'REPEAT':
+        return $this->setRepeat( $arglist[1], $arglist[2] );
+      case 'REQUEST-STATUS':
+        return $this->setRequestStatus( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5] );
+      case 'RESOURCES':
+        return $this->setResources( $arglist[1], $arglist[2], $arglist[3] );
+      case 'RRULE':
+        return $this->setRrule( $arglist[1], $arglist[2], $arglist[3] );
+      case 'SEQUENCE':
+        return $this->setSequence( $arglist[1], $arglist[2] );
+      case 'STATUS':
+        return $this->setStatus( $arglist[1], $arglist[2] );
+      case 'SUMMARY':
+        return $this->setSummary( $arglist[1], $arglist[2] );
+      case 'TRANSP':
+        return $this->setTransp( $arglist[1], $arglist[2] );
+      case 'TRIGGER':
+        return $this->setTrigger( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6], $arglist[7], $arglist[8], $arglist[9], $arglist[10], $arglist[11] );
+      case 'TZID':
+        return $this->setTzid( $arglist[1], $arglist[2] );
+      case 'TZNAME':
+        return $this->setTzname( $arglist[1], $arglist[2], $arglist[3] );
+      case 'TZOFFSETFROM':
+        return $this->setTzoffsetfrom( $arglist[1], $arglist[2] );
+      case 'TZOFFSETTO':
+        return $this->setTzoffsetto( $arglist[1], $arglist[2] );
+      case 'TZURL':
+        return $this->setTzurl( $arglist[1], $arglist[2] );
+      case 'UID':
+        return $this->setUid( $arglist[1], $arglist[2] );
+      case 'URL':
+        return $this->setUrl( $arglist[1], $arglist[2] );
+      default:
+        return $this->setXprop( $arglist[0], $arglist[1], $arglist[2] );
+    }
+    return FALSE;
+  }
+/*********************************************************************************/
+/**
+ * parse component unparsed data into properties
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.2 - 2008-10-23
+ * @param mixed $unparsedtext, optional, strict rfc2445 formatted, single property string or array of property strings
+ * @return bool FALSE if error occurs during parsing
+ *
+ */
+  function parse( $unparsedtext=null ) {
+    if( $unparsedtext ) {
+      $this->unparsed = array();
+      if( is_array( $unparsedtext )) {
+        $comp = & $this;
+        foreach ( $unparsedtext as $line ) {
+          if( 'END:VALARM' == strtoupper( substr( $line, 0, 10 ))) {
+            $this->setComponent( $comp );
+            $comp =  & $this;
+            continue;
+          }
+          elseif( 'BEGIN:VALARM' == strtoupper( substr( $line, 0, 12 ))) {
+            $comp = new valarm();
+            continue;
+          }
+          else
+            $comp->unparsed[] = $line;
+        }
+      }
+      else
+        $this->unparsed = array( trim( $unparsedtext ));
+    }
+    elseif( !isset( $this->unparsed ))
+      $this->unparsed = array();
+            /* concatenate property values spread over several lines */
+    $lastix    = -1;
+    $propnames = array( 'action', 'attach', 'attendee', 'categories', 'comment', 'completed'
+                      , 'contact', 'class', 'created', 'description', 'dtend', 'dtstart'
+                      , 'dtstamp', 'due', 'duration', 'exdate', 'exrule', 'freebusy', 'geo'
+                      , 'last-modified', 'location', 'organizer', 'percent-complete'
+                      , 'priority', 'rdate', 'recurrence-id', 'related-to', 'repeat'
+                      , 'request-status', 'resources', 'rrule', 'sequence', 'status'
+                      , 'summary', 'transp', 'trigger', 'tzid', 'tzname', 'tzoffsetfrom'
+                      , 'tzoffsetto', 'tzurl', 'uid', 'url', 'x-' );
+    $proprows  = array();
+    foreach( $this->unparsed as $line ) {
+      $newProp = FALSE;
+      foreach ( $propnames as $propname ) {
+        if( $propname == strtolower( substr( $line, 0, strlen( $propname )))) {
+          $newProp = TRUE;
+          break;
+        }
+      }
+      if( $newProp ) {
+        $newProp = FALSE;
+        $lastix++;
+        $proprows[$lastix]  = $line;
+      }
+      else {
+            /* remove line breaks */
+        if(( '\n' == substr( $proprows[$lastix], -2 )) &&
+           (  ' ' == substr( $line, 0, 1 ))) {
+          $proprows[$lastix] = substr( $proprows[$lastix], 0, strlen( $proprows[$lastix] ) - 2 );
+          $line = substr( $line, 1 );
+        }
+        $proprows[$lastix] .= $line;
+      }
+    }
+            /* parse each property 'line' */
+    foreach( $proprows as $line ) {
+      $line = str_replace( "\n ", '', $line );
+      if( '\n' == substr( $line, -2 ))
+        $line = substr( $line, 0, strlen( $line ) - 2 );
+            /* get propname, (problem with x-properties, otherwise in previous loop) */
+      $cix = $propname = null;
+      for( $cix=0; $cix < strlen( $line ); $cix++ ) {
+        if( in_array( $line{$cix}, array( ':', ';' )))
+          break;
+        else {
+          $propname .= $line{$cix};
+        }
+      }
+      if(( 'x-' == substr( $propname, 0, 2 )) || ( 'X-' == substr( $propname, 0, 2 ))) {
+        $propname2 = $propname;
+        $propname  = 'X-';
+      }
+            /* rest of the line is opt.params and value */
+      $line = substr( $line, $cix );
+            /* separate attributes from value */
+      $attr   = array();
+      $attrix = -1;
+      $strlen = strlen( $line );
+      for( $cix=0; $cix < $strlen; $cix++ ) {
+        if((       ':'   == $line{$cix} )             &&
+                 ( '://' != substr( $line, $cix, 3 )) &&
+           ( 'mailto:'   != strtolower( substr( $line, $cix - 6, 7 )))) {
+          $attrEnd = TRUE;
+          if(( $cix < ( $strlen - 4 )) &&
+               ctype_digit( substr( $line, $cix+1, 4 ))) { // an URI with a (4pos) portnr??
+            for( $c2ix = $cix; 3 < $c2ix; $c2ix-- ) {
+              if( '://' == substr( $line, $c2ix - 2, 3 )) {
+                $attrEnd = FALSE;
+                break; // an URI with a portnr!!
+              }
+            }
+          }
+          if( $attrEnd) {
+            $line = substr( $line, $cix + 1 );
+            break;
+          }
+        }
+        if( ';' == $line{$cix} )
+          $attr[++$attrix] = null;
+        else
+          $attr[$attrix] .= $line{$cix};
+      }
+            /* make attributes in array format */
+      $propattr = array();
+      foreach( $attr as $attribute ) {
+        $attrsplit = explode( '=', $attribute, 2 );
+        if( 1 < count( $attrsplit ))
+          $propattr[$attrsplit[0]] = $attrsplit[1];
+        else
+          $propattr[] = $attribute;
+      }
+            /* call setProperty( $propname.. . */
+      switch( $propname ) {
+        case 'ATTENDEE':
+          foreach( $propattr as $pix => $attr ) {
+            $attr2 = explode( ',', $attr );
+              if( 1 < count( $attr2 ))
+                $propattr[$pix] = $attr2;
+          }
+          $this->setProperty( $propname, $line, $propattr );
+          break;
+        case 'CATEGORIES':
+        case 'RESOURCES':
+          if( FALSE !== strpos( $line, ',' )) {
+            $content  = explode( ',', $line );
+            $clen     = count( $content );
+            for( $cix = 0; $cix < $clen; $cix++ ) {
+              if( "\\" == substr($content[$cix], -1)) {
+                $content[$cix] .= ','.$content[$cix + 1];
+                unset($content[$cix + 1]);
+                $cix++;
+              }
+            }
+            if( 1 < count( $content )) {
+              $content = array_values( $content );
+              foreach( $content as $cix => $contentPart )
+                $content[$cix] = $this->_strunrep( $contentPart );
+              $this->setProperty( $propname, $content, $propattr );
+              break;
+            }
+            else
+              $line = reset( $content );
+          }
+        case 'X-':
+          $propname = ( isset( $propname2 )) ? $propname2 : $propname;
+        case 'COMMENT':
+        case 'CONTACT':
+        case 'DESCRIPTION':
+        case 'LOCATION':
+        case 'SUMMARY':
+          if( empty( $line ))
+            $propattr = null;
+          $this->setProperty( $propname, $this->_strunrep( $line ), $propattr );
+          unset( $propname2 );
+          break;
+        case 'REQUEST-STATUS':
+          $values    = explode( ';', $line, 3 );
+          $values[1] = ( !isset( $values[1] )) ? null : $this->_strunrep( $values[1] );
+          $values[2] = ( !isset( $values[2] )) ? null : $this->_strunrep( $values[2] );
+          $this->setProperty( $propname
+                            , $values[0]  // statcode
+                            , $values[1]  // statdesc
+                            , $values[2]  // extdata
+                            , $propattr );
+          break;
+        case 'FREEBUSY':
+          $fbtype = ( isset( $propattr['FBTYPE'] )) ? $propattr['FBTYPE'] : ''; // force setting default, if missing
+          unset( $propattr['FBTYPE'] );
+          $values = explode( ',', $line );
+          foreach( $values as $vix => $value ) {
+            $value2 = explode( '/', $value );
+            if( 1 < count( $value2 ))
+              $values[$vix] = $value2;
+          }
+          $this->setProperty( $propname, $fbtype, $values, $propattr );
+          break;
+        case 'GEO':
+          $value = explode( ';', $line, 2 );
+          if( 2 > count( $value ))
+            $value[1] = null;
+          $this->setProperty( $propname, $value[0], $value[1], $propattr );
+          break;
+        case 'EXDATE':
+          $values = ( !empty( $line )) ? explode( ',', $line ) : null;
+          $this->setProperty( $propname, $values, $propattr );
+          break;
+        case 'RDATE':
+          if( empty( $line )) {
+            $this->setProperty( $propname, $line, $propattr );
+            break;
+          }
+          $values = explode( ',', $line );
+          foreach( $values as $vix => $value ) {
+            $value2 = explode( '/', $value );
+            if( 1 < count( $value2 ))
+              $values[$vix] = $value2;
+          }
+          $this->setProperty( $propname, $values, $propattr );
+          break;
+        case 'EXRULE':
+        case 'RRULE':
+          $values = explode( ';', $line );
+          $recur = array();
+          foreach( $values as $value2 ) {
+            if( empty( $value2 ))
+              continue; // ;-char in ending position ???
+            $value3 = explode( '=', $value2, 2 );
+            $rulelabel = strtoupper( $value3[0] );
+            switch( $rulelabel ) {
+              case 'BYDAY': {
+                $value4 = explode( ',', $value3[1] );
+                if( 1 < count( $value4 )) {
+                  foreach( $value4 as $v5ix => $value5 ) {
+                    $value6 = array();
+                    $dayno = $dayname = null;
+                    $value5 = trim( (string) $value5 );
+                    if(( ctype_alpha( substr( $value5, -1 ))) &&
+                       ( ctype_alpha( substr( $value5, -2, 1 )))) {
+                      $dayname = substr( $value5, -2, 2 );
+                      if( 2 < strlen( $value5 ))
+                        $dayno = substr( $value5, 0, ( strlen( $value5 ) - 2 ));
+                    }
+                    if( $dayno )
+                      $value6[] = $dayno;
+                    if( $dayname )
+                      $value6['DAY'] = $dayname;
+                    $value4[$v5ix] = $value6;
+                  }
+                }
+                else {
+                  $value4 = array();
+                  $dayno  = $dayname = null;
+                  $value5 = trim( (string) $value3[1] );
+                  if(( ctype_alpha( substr( $value5, -1 ))) &&
+                     ( ctype_alpha( substr( $value5, -2, 1 )))) {
+                      $dayname = substr( $value5, -2, 2 );
+                    if( 2 < strlen( $value5 ))
+                      $dayno = substr( $value5, 0, ( strlen( $value5 ) - 2 ));
+                  }
+                  if( $dayno )
+                    $value4[] = $dayno;
+                  if( $dayname )
+                    $value4['DAY'] = $dayname;
+                }
+                $recur[$rulelabel] = $value4;
+                break;
+              }
+              default: {
+                $value4 = explode( ',', $value3[1] );
+                if( 1 < count( $value4 ))
+                  $value3[1] = $value4;
+                $recur[$rulelabel] = $value3[1];
+                break;
+              }
+            } // end - switch $rulelabel
+          } // end - foreach( $values.. .
+          $this->setProperty( $propname, $recur, $propattr );
+          break;
+        default:
+          $this->setProperty( $propname, $line, $propattr );
+          break;
+      } // end  switch( $propname.. .
+    } // end - foreach( $proprows.. .
+    unset( $this->unparsed, $proprows );
+    if( isset( $this->components ) && is_array( $this->components ) && ( 0 < count( $this->components ))) {
+      for( $six = 0; $six < count( $this->components ); $six++ ) {
+        if( !empty( $this->components[$six]->unparsed ))
+          $this->components[$six]->parse();
+      }
+    }
+  }
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ * return a copy of this component
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.2.16 - 2007-11-07
+ * @return object
+ */
+  function copy() {
+    $serialized_contents = serialize($this);
+    $copy = unserialize($serialized_contents);
+    unset( $copy->propix );
+    return $copy;
+ }
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ * delete calendar subcomponent from component container
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-10-15
+ * @param mixed $arg1 ordno / component type / component uid
+ * @param mixed $arg2 optional, ordno if arg1 = component type
+ * @return void
+ */
+  function deleteComponent( $arg1, $arg2=FALSE  ) {
+    if( !isset( $this->components )) return FALSE;
+    $argType = $index = null;
+    if ( ctype_digit( (string) $arg1 )) {
+      $argType = 'INDEX';
+      $index   = (int) $arg1 - 1;
+    }
+    elseif(( strlen( $arg1 ) <= strlen( 'vfreebusy' )) && ( FALSE === strpos( $arg1, '@' ))) {
+      $argType = strtolower( $arg1 );
+      $index   = ( !empty( $arg2 ) && ctype_digit( (string) $arg2 )) ? (( int ) $arg2 - 1 ) : 0;
+    }
+    $cix2dC = 0;
+    foreach ( $this->components as $cix => $component) {
+      if( empty( $component )) continue;
+      unset( $component->propix );
+      if(( 'INDEX' == $argType ) && ( $index == $cix )) {
+        unset( $this->components[$cix] );
+        return TRUE;
+      }
+      elseif( $argType == $component->objName ) {
+        if( $index == $cix2dC ) {
+          unset( $this->components[$cix] );
+          return TRUE;
+        }
+        $cix2dC++;
+      }
+      elseif( !$argType && ($arg1 == $component->getProperty( 'uid' ))) {
+        unset( $this->components[$cix] );
+        return TRUE;
+      }
+    }
+    return FALSE;
+  }
+/**
+ * get calendar component subcomponent from component container
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-10-15
+ * @param mixed $arg1 optional, ordno/component type/ component uid
+ * @param mixed $arg2 optional, ordno if arg1 = component type
+ * @return object
+ */
+  function getComponent ( $arg1=FALSE, $arg2=FALSE ) {
+    if( !isset( $this->components )) return FALSE;
+    $index = $argType = null;
+    if ( !$arg1 ) {
+      $argType = 'INDEX';
+      $index   = $this->compix['INDEX'] =
+        ( isset( $this->compix['INDEX'] )) ? $this->compix['INDEX'] + 1 : 1;
+    }
+    elseif ( ctype_digit( (string) $arg1 )) {
+      $argType = 'INDEX';
+      $index   = (int) $arg1;
+      unset( $this->compix );
+    }
+    elseif(( strlen( $arg1 ) <= strlen( 'vfreebusy' )) && ( FALSE === strpos( $arg1, '@' ))) {
+      unset( $this->compix['INDEX'] );
+      $argType = strtolower( $arg1 );
+      if( !$arg2 )
+        $index = $this->compix[$argType] =
+        ( isset( $this->compix[$argType] )) ? $this->compix[$argType] + 1 : 1;
+      else
+        $index = (int) $arg2;
+    }
+    $index  -= 1;
+    $ckeys = array_keys( $this->components );
+    if( !empty( $index) && ( $index > end( $ckeys )))
+      return FALSE;
+    $cix2gC = 0;
+    foreach( $this->components as $cix => $component ) {
+      if( empty( $component )) continue;
+      unset( $component->propix );
+      if(( 'INDEX' == $argType ) && ( $index == $cix ))
+        return $component->copy();
+      elseif( $argType == $component->objName ) {
+         if( $index == $cix2gC )
+           return $component->copy();
+         $cix2gC++;
+      }
+      elseif( !$argType && ( $arg1 == $component->getProperty( 'uid' ))) {
+        unset( $component->propix );
+        return $component->copy();
+      }
+    }
+            /* not found.. . */
+    unset( $this->compix );
+    return false;
+  }
+/**
+ * add calendar component as subcomponent to container for subcomponents
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 1.x.x - 2007-04-24
+ * @param object $component calendar component
+ * @return void
+ */
+  function addSubComponent ( $component ) {
+    $this->setComponent( $component );
+  }
+/**
+ * add calendar component as subcomponent to container for subcomponents
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.13 - 2008-09-24
+ * @param object $component calendar component
+ * @param mixed $arg1 optional, ordno/component type/ component uid
+ * @param mixed $arg2 optional, ordno if arg1 = component type
+ * @return bool
+ */
+  function setComponent( $component, $arg1=FALSE, $arg2=FALSE  ) {
+    if( !isset( $this->components )) return FALSE;
+    if( '' >= $component->getConfig( 'language'))
+      $component->setConfig( 'language',  $this->getConfig( 'language' ));
+    $component->setConfig( 'allowEmpty',  $this->getConfig( 'allowEmpty' ));
+    $component->setConfig( 'nl',          $this->getConfig( 'nl' ));
+    $component->setConfig( 'unique_id',   $this->getConfig( 'unique_id' ));
+    $component->setConfig( 'format',      $this->getConfig( 'format' ));
+    if( !in_array( $component->objName, array( 'valarm', 'vtimezone', 'standard', 'daylight' ))) {
+      unset( $component->propix );
+            /* make sure dtstamp and uid is set */
+      $dummy = $component->getProperty( 'dtstamp' );
+      $dummy = $component->getProperty( 'uid' );
+    }
+    if( !$arg1 ) {
+      $this->components[] = $component->copy();
+      return TRUE;
+    }
+    $argType = $index = null;
+    if ( ctype_digit( (string) $arg1 )) {
+      $argType = 'INDEX';
+      $index   = (int) $arg1 - 1;
+    }
+    elseif(( strlen( $arg1 ) <= strlen( 'vfreebusy' )) && ( FALSE === strpos( $arg1, '@' ))) {
+      $argType = strtolower( $arg1 );
+      $index = ( ctype_digit( (string) $arg2 )) ? ((int) $arg2) - 1 : 0;
+    }
+    $cix2sC = 0;
+    foreach ( $this->components as $cix => $component2 ) {
+      if( empty( $component2 )) continue;
+      unset( $component2->propix );
+      if(( 'INDEX' == $argType ) && ( $index == $cix )) {
+        $this->components[$cix] = $component->copy();
+        return TRUE;
+      }
+      elseif( $argType == $component2->objName ) {
+        if( $index == $cix2sC ) {
+          $this->components[$cix] = $component->copy();
+          return TRUE;
+        }
+        $cix2sC++;
+      }
+      elseif( !$argType && ($arg1 == $component2->getProperty( 'uid' ))) {
+        $this->components[$cix] = $component->copy();
+        return TRUE;
+      }
+    }
+            /* not found.. . insert anyway.. .*/
+    $this->components[] = $component->copy();
+    return TRUE;
+  }
+/**
+ * creates formatted output for subcomponents
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.4.10 - 2008-08-06
+ * @return string
+ */
+  function createSubComponent() {
+    $output = null;
+    foreach( $this->components as $component ) {
+      if( empty( $component )) continue;
+      if( '' >= $component->getConfig( 'language'))
+        $component->setConfig( 'language',  $this->getConfig( 'language' ));
+      $component->setConfig( 'allowEmpty',  $this->getConfig( 'allowEmpty' ));
+      $component->setConfig( 'nl',          $this->getConfig( 'nl' ));
+      $component->setConfig( 'unique_id',   $this->getConfig( 'unique_id' ));
+      $component->setConfig( 'format',      $this->getConfig( 'format' ));
+      $output .= $component->createComponent( $this->xcaldecl );
+    }
+    return $output;
+  }
+/********************************************************************************/
+/**
+ * break lines at pos 75
+ *
+ * Lines of text SHOULD NOT be longer than 75 octets, excluding the line
+ * break. Long content lines SHOULD be split into a multiple line
+ * representations using a line "folding" technique. That is, a long
+ * line can be split between any two characters by inserting a CRLF
+ * immediately followed by a single linear white space character (i.e.,
+ * SPACE, US-ASCII decimal 32 or HTAB, US-ASCII decimal 9). Any sequence
+ * of CRLF followed immediately by a single linear white space character
+ * is ignored (i.e., removed) when processing the content type.
+ *
+ * Edited 2007-08-26 by Anders Litzell, anders@litzell.se to fix bug where
+ * the reserved expression "\n" in the arg $string could be broken up by the
+ * folding of lines, causing ambiguity in the return string.
+ * Fix uses var $breakAtChar=75 and breaks the line at $breakAtChar-1 if need be.
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.2.8 - 2006-09-03
+ * @param string $value
+ * @return string
+ */
+  function _size75( $string ) {
+    $strlen = strlen( $string );
+    $tmp    = $string;
+    $string = null;
+    while( $strlen > 75 ) {
+       $breakAtChar = 75;
+       if( substr( $tmp, ( $breakAtChar - 1 ), strlen( '\n' )) == '\n' )
+         $breakAtChar = $breakAtChar - 1;
+       $string .= substr( $tmp, 0, $breakAtChar );
+       $string .= $this->nl;
+       $tmp     = ' '.substr( $tmp, $breakAtChar );
+       $strlen  = strlen( $tmp );
+    } // while
+    $string .= rtrim( $tmp ); // the rest
+    if( $this->nl != substr( $string, ( 0 - strlen( $this->nl ))))
+      $string .= $this->nl;
+    return $string;
+  }
+/**
+ * special characters management output
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.3.3 - 2007-12-20
+ * @param string $string
+ * @return string
+ */
+  function _strrep( $string ) {
+    switch( $this->format ) {
+      case 'xcal':
+        $string = str_replace( '\n',  $this->nl, $string);
+        $string = htmlspecialchars( strip_tags( stripslashes( urldecode ( $string ))));
+        break;
+      default:
+        $pos = 0;
+        while( $pos <= strlen( $string )) {
+          $pos = strpos( $string, "\\", $pos );
+          if( FALSE === $pos )
+            break;
+          if( !in_array( $string{($pos + 1)}, array( 'n', 'N', 'r', ',', ';' ))) {
+            $string = substr( $string, 0, $pos )."\\".substr( $string, ( $pos + 1 ));
+            $pos += 1;
+          }
+          $pos += 1;
+        }
+        if( FALSE !== strpos( $string, '"' ))
+          $string = str_replace('"',   "'",       $string);
+        if( FALSE !== strpos( $string, ',' ))
+          $string = str_replace(',',   '\,',      $string);
+        if( FALSE !== strpos( $string, ';' ))
+          $string = str_replace(';',   '\;',      $string);
+        if( FALSE !== strpos( $string, "\r\n" ))
+          $string = str_replace( "\r\n", '\n',    $string);
+        elseif( FALSE !== strpos( $string, "\r" ))
+          $string = str_replace( "\r", '\n',      $string);
+        if( FALSE !== strpos( $string, '\N' ))
+          $string = str_replace( '\N', '\n',      $string);
+//        if( FALSE !== strpos( $string, $this->nl ))
+          $string = str_replace( $this->nl, '\n', $string);
+        break;
+    }
+    return $string;
+  }
+/**
+ * special characters management input (from iCal file)
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.3.3 - 2007-11-23
+ * @param string $string
+ * @return string
+ */
+  function _strunrep( $string ) {
+    $string = str_replace( '\\\\', '\\',     $string);
+    $string = str_replace( '\,',   ',',      $string);
+    $string = str_replace( '\;',   ';',      $string);
+//    $string = str_replace( '\n',  $this->nl, $string); // ??
+    return $string;
+  }
+}
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ * class for calendar component VEVENT
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-10-12
+ */
+class vevent extends calendarComponent {
+  var $attach;
+  var $attendee;
+  var $categories;
+  var $comment;
+  var $contact;
+  var $class;
+  var $created;
+  var $description;
+  var $dtend;
+  var $dtstart;
+  var $duration;
+  var $exdate;
+  var $exrule;
+  var $geo;
+  var $lastmodified;
+  var $location;
+  var $organizer;
+  var $priority;
+  var $rdate;
+  var $recurrenceid;
+  var $relatedto;
+  var $requeststatus;
+  var $resources;
+  var $rrule;
+  var $sequence;
+  var $status;
+  var $summary;
+  var $transp;
+  var $url;
+  var $xprop;
+            //  component subcomponents container
+  var $components;
+/**
+ * constructor for calendar component VEVENT object
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-10-31
+ * @return void
+ */
+  function vevent() {
+    $this->calendarComponent();
+
+    $this->attach          = '';
+    $this->attendee        = '';
+    $this->categories      = '';
+    $this->class           = '';
+    $this->comment         = '';
+    $this->contact         = '';
+    $this->created         = '';
+    $this->description     = '';
+    $this->dtstart         = '';
+    $this->dtend           = '';
+    $this->duration        = '';
+    $this->exdate          = '';
+    $this->exrule          = '';
+    $this->geo             = '';
+    $this->lastmodified    = '';
+    $this->location        = '';
+    $this->organizer       = '';
+    $this->priority        = '';
+    $this->rdate           = '';
+    $this->recurrenceid    = '';
+    $this->relatedto       = '';
+    $this->requeststatus   = '';
+    $this->resources       = '';
+    $this->rrule           = '';
+    $this->sequence        = '';
+    $this->status          = '';
+    $this->summary         = '';
+    $this->transp          = '';
+    $this->url             = '';
+    $this->xprop           = '';
+
+    $this->components      = array();
+
+  }
+/**
+ * create formatted output for calendar component VEVENT object instance
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-07
+ * @param array $xcaldecl
+ * @return string
+ */
+  function createComponent( &$xcaldecl ) {
+    $objectname    = $this->_createFormat();
+    $component     = $this->componentStart1.$objectname.$this->componentStart2.$this->nl;
+    $component    .= $this->createUid();
+    $component    .= $this->createDtstamp();
+    $component    .= $this->createAttach();
+    $component    .= $this->createAttendee();
+    $component    .= $this->createCategories();
+    $component    .= $this->createComment();
+    $component    .= $this->createContact();
+    $component    .= $this->createClass();
+    $component    .= $this->createCreated();
+    $component    .= $this->createDescription();
+    $component    .= $this->createDtstart();
+    $component    .= $this->createDtend();
+    $component    .= $this->createDuration();
+    $component    .= $this->createExdate();
+    $component    .= $this->createExrule();
+    $component    .= $this->createGeo();
+    $component    .= $this->createLastModified();
+    $component    .= $this->createLocation();
+    $component    .= $this->createOrganizer();
+    $component    .= $this->createPriority();
+    $component    .= $this->createRdate();
+    $component    .= $this->createRrule();
+    $component    .= $this->createRelatedTo();
+    $component    .= $this->createRequestStatus();
+    $component    .= $this->createRecurrenceid();
+    $component    .= $this->createResources();
+    $component    .= $this->createSequence();
+    $component    .= $this->createStatus();
+    $component    .= $this->createSummary();
+    $component    .= $this->createTransp();
+    $component    .= $this->createUrl();
+    $component    .= $this->createXprop();
+    $component    .= $this->createSubComponent();
+    $component    .= $this->componentEnd1.$objectname.$this->componentEnd2;
+    if( is_array( $this->xcaldecl ) && ( 0 < count( $this->xcaldecl ))) {
+      foreach( $this->xcaldecl as $localxcaldecl )
+        $xcaldecl[] = $localxcaldecl;
+    }
+    return $component;
+  }
+}
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ * class for calendar component VTODO
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-10-12
+ */
+class vtodo extends calendarComponent {
+  var $attach;
+  var $attendee;
+  var $categories;
+  var $comment;
+  var $completed;
+  var $contact;
+  var $class;
+  var $created;
+  var $description;
+  var $dtstart;
+  var $due;
+  var $duration;
+  var $exdate;
+  var $exrule;
+  var $geo;
+  var $lastmodified;
+  var $location;
+  var $organizer;
+  var $percentcomplete;
+  var $priority;
+  var $rdate;
+  var $recurrenceid;
+  var $relatedto;
+  var $requeststatus;
+  var $resources;
+  var $rrule;
+  var $sequence;
+  var $status;
+  var $summary;
+  var $url;
+  var $xprop;
+            //  component subcomponents container
+  var $components;
+/**
+ * constructor for calendar component VTODO object
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-10-31
+ * @return void
+ */
+  function vtodo() {
+    $this->calendarComponent();
+
+    $this->attach          = '';
+    $this->attendee        = '';
+    $this->categories      = '';
+    $this->class           = '';
+    $this->comment         = '';
+    $this->completed       = '';
+    $this->contact         = '';
+    $this->created         = '';
+    $this->description     = '';
+    $this->dtstart         = '';
+    $this->due             = '';
+    $this->duration        = '';
+    $this->exdate          = '';
+    $this->exrule          = '';
+    $this->geo             = '';
+    $this->lastmodified    = '';
+    $this->location        = '';
+    $this->organizer       = '';
+    $this->percentcomplete = '';
+    $this->priority        = '';
+    $this->rdate           = '';
+    $this->recurrenceid    = '';
+    $this->relatedto       = '';
+    $this->requeststatus   = '';
+    $this->resources       = '';
+    $this->rrule           = '';
+    $this->sequence        = '';
+    $this->status          = '';
+    $this->summary         = '';
+    $this->url             = '';
+    $this->xprop           = '';
+
+    $this->components      = array();
+  }
+/**
+ * create formatted output for calendar component VTODO object instance
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-11-07
+ * @param array $xcaldecl
+ * @return string
+ */
+  function createComponent( &$xcaldecl ) {
+    $objectname    = $this->_createFormat();
+    $component     = $this->componentStart1.$objectname.$this->componentStart2.$this->nl;
+    $component    .= $this->createUid();
+    $component    .= $this->createDtstamp();
+    $component    .= $this->createAttach();
+    $component    .= $this->createAttendee();
+    $component    .= $this->createCategories();
+    $component    .= $this->createClass();
+    $component    .= $this->createComment();
+    $component    .= $this->createCompleted();
+    $component    .= $this->createContact();
+    $component    .= $this->createCreated();
+    $component    .= $this->createDescription();
+    $component    .= $this->createDtstart();
+    $component    .= $this->createDue();
+    $component    .= $this->createDuration();
+    $component    .= $this->createExdate();
+    $component    .= $this->createExrule();
+    $component    .= $this->createGeo();
+    $component    .= $this->createLastModified();
+    $component    .= $this->createLocation();
+    $component    .= $this->createOrganizer();
+    $component    .= $this->createPercentComplete();
+    $component    .= $this->createPriority();
+    $component    .= $this->createRdate();
+    $component    .= $this->createRelatedTo();
+    $component    .= $this->createRequestStatus();
+    $component    .= $this->createRecurrenceid();
+    $component    .= $this->createResources();
+    $component    .= $this->createRrule();
+    $component    .= $this->createSequence();
+    $component    .= $this->createStatus();
+    $component    .= $this->createSummary();
+    $component    .= $this->createUrl();
+    $component    .= $this->createXprop();
+    $component    .= $this->createSubComponent();
+    $component    .= $this->componentEnd1.$objectname.$this->componentEnd2;
+    if( is_array( $this->xcaldecl ) && ( 0 < count( $this->xcaldecl ))) {
+      foreach( $this->xcaldecl as $localxcaldecl )
+        $xcaldecl[] = $localxcaldecl;
+    }
+    return $component;
+  }
+}
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ * class for calendar component VJOURNAL
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-10-12
+ */
+class vjournal extends calendarComponent {
+  var $attach;
+  var $attendee;
+  var $categories;
+  var $comment;
+  var $contact;
+  var $class;
+  var $created;
+  var $description;
+  var $dtstart;
+  var $exdate;
+  var $exrule;
+  var $lastmodified;
+  var $organizer;
+  var $rdate;
+  var $recurrenceid;
+  var $relatedto;
+  var $requeststatus;
+  var $rrule;
+  var $sequence;
+  var $status;
+  var $summary;
+  var $url;
+  var $xprop;
+/**
+ * constructor for calendar component VJOURNAL object
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-10-31
+ * @return void
+ */
+  function vjournal() {
+    $this->calendarComponent();
+
+    $this->attach          = '';
+    $this->attendee        = '';
+    $this->categories      = '';
+    $this->class           = '';
+    $this->comment         = '';
+    $this->contact         = '';
+    $this->created         = '';
+    $this->description     = '';
+    $this->dtstart         = '';
+    $this->exdate          = '';
+    $this->exrule          = '';
+    $this->lastmodified    = '';
+    $this->organizer       = '';
+    $this->rdate           = '';
+    $this->recurrenceid    = '';
+    $this->relatedto       = '';
+    $this->requeststatus   = '';
+    $this->rrule           = '';
+    $this->sequence        = '';
+    $this->status          = '';
+    $this->summary         = '';
+    $this->url             = '';
+    $this->xprop           = '';
+  }
+/**
+ * create formatted output for calendar component VJOURNAL object instance
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-10-12
+ * @param array $xcaldecl
+ * @return string
+ */
+  function createComponent( &$xcaldecl ) {
+    $objectname = $this->_createFormat();
+    $component  = $this->componentStart1.$objectname.$this->componentStart2.$this->nl;
+    $component .= $this->createUid();
+    $component .= $this->createDtstamp();
+    $component .= $this->createAttach();
+    $component .= $this->createAttendee();
+    $component .= $this->createCategories();
+    $component .= $this->createClass();
+    $component .= $this->createComment();
+    $component .= $this->createContact();
+    $component .= $this->createCreated();
+    $component .= $this->createDescription();
+    $component .= $this->createDtstart();
+    $component .= $this->createExdate();
+    $component .= $this->createExrule();
+    $component .= $this->createLastModified();
+    $component .= $this->createOrganizer();
+    $component .= $this->createRdate();
+    $component .= $this->createRequestStatus();
+    $component .= $this->createRecurrenceid();
+    $component .= $this->createRelatedTo();
+    $component .= $this->createRrule();
+    $component .= $this->createSequence();
+    $component .= $this->createStatus();
+    $component .= $this->createSummary();
+    $component .= $this->createUrl();
+    $component .= $this->createXprop();
+    $component .= $this->componentEnd1.$objectname.$this->componentEnd2;
+    if( is_array( $this->xcaldecl ) && ( 0 < count( $this->xcaldecl ))) {
+      foreach( $this->xcaldecl as $localxcaldecl )
+        $xcaldecl[] = $localxcaldecl;
+    }
+    return $component;
+  }
+}
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ * class for calendar component VFREEBUSY
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-10-12
+ */
+class vfreebusy extends calendarComponent {
+  var $attendee;
+  var $comment;
+  var $contact;
+  var $dtend;
+  var $dtstart;
+  var $duration;
+  var $freebusy;
+  var $organizer;
+  var $requeststatus;
+  var $url;
+  var $xprop;
+            //  component subcomponents container
+  var $components;
+/**
+ * constructor for calendar component VFREEBUSY object
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-10-31
+ * @return void
+ */
+  function vfreebusy() {
+    $this->calendarComponent();
+
+    $this->attendee        = '';
+    $this->comment         = '';
+    $this->contact         = '';
+    $this->dtend           = '';
+    $this->dtstart         = '';
+    $this->duration        = '';
+    $this->freebusy        = '';
+    $this->organizer       = '';
+    $this->requeststatus   = '';
+    $this->url             = '';
+    $this->xprop           = '';
+  }
+/**
+ * create formatted output for calendar component VFREEBUSY object instance
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.3.1 - 2007-11-19
+ * @param array $xcaldecl
+ * @return string
+ */
+  function createComponent( &$xcaldecl ) {
+    $objectname = $this->_createFormat();
+    $component  = $this->componentStart1.$objectname.$this->componentStart2.$this->nl;
+    $component .= $this->createUid();
+    $component .= $this->createDtstamp();
+    $component .= $this->createAttendee();
+    $component .= $this->createComment();
+    $component .= $this->createContact();
+    $component .= $this->createDtstart();
+    $component .= $this->createDtend();
+    $component .= $this->createDuration();
+    $component .= $this->createFreebusy();
+    $component .= $this->createOrganizer();
+    $component .= $this->createRequestStatus();
+    $component .= $this->createUrl();
+    $component .= $this->createXprop();
+    $component .= $this->componentEnd1.$objectname.$this->componentEnd2;
+    if( is_array( $this->xcaldecl ) && ( 0 < count( $this->xcaldecl ))) {
+      foreach( $this->xcaldecl as $localxcaldecl )
+        $xcaldecl[] = $localxcaldecl;
+    }
+    return $component;
+  }
+}
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ * class for calendar component VALARM
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-10-12
+ */
+class valarm extends calendarComponent {
+  var $action;
+  var $attach;
+  var $attendee;
+  var $description;
+  var $duration;
+  var $repeat;
+  var $summary;
+  var $trigger;
+  var $xprop;
+/**
+ * constructor for calendar component VALARM object
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-10-31
+ * @return void
+ */
+  function valarm() {
+    $this->calendarComponent();
+
+    $this->action          = '';
+    $this->attach          = '';
+    $this->attendee        = '';
+    $this->description     = '';
+    $this->duration        = '';
+    $this->repeat          = '';
+    $this->summary         = '';
+    $this->trigger         = '';
+    $this->xprop           = '';
+  }
+/**
+ * create formatted output for calendar component VALARM object instance
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-10-22
+ * @param array $xcaldecl
+ * @return string
+ */
+  function createComponent( &$xcaldecl ) {
+    $objectname    = $this->_createFormat();
+    $component     = $this->componentStart1.$objectname.$this->componentStart2.$this->nl;
+    $component    .= $this->createAction();
+    $component    .= $this->createAttach();
+    $component    .= $this->createAttendee();
+    $component    .= $this->createDescription();
+    $component    .= $this->createDuration();
+    $component    .= $this->createRepeat();
+    $component    .= $this->createSummary();
+    $component    .= $this->createTrigger();
+    $component    .= $this->createXprop();
+    $component    .= $this->componentEnd1.$objectname.$this->componentEnd2;
+    return $component;
+  }
+}
+/**********************************************************************************
+/*********************************************************************************/
+/**
+ * class for calendar component VTIMEZONE
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-10-12
+ */
+class vtimezone extends calendarComponent {
+  var $timezonetype;
+
+  var $comment;
+  var $dtstart;
+  var $lastmodified;
+  var $rdate;
+  var $rrule;
+  var $tzid;
+  var $tzname;
+  var $tzoffsetfrom;
+  var $tzoffsetto;
+  var $tzurl;
+  var $xprop;
+            //  component subcomponents container
+  var $components;
+/**
+ * constructor for calendar component VTIMEZONE object
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-10-31
+ * @param string $timezonetype optional, default FALSE ( STANDARD / DAYLIGHT )
+ * @return void
+ */
+  function vtimezone( $timezonetype=FALSE ) {
+    if( !$timezonetype )
+      $this->timezonetype = 'VTIMEZONE';
+    else
+      $this->timezonetype = strtoupper( $timezonetype );
+    $this->calendarComponent();
+
+    $this->comment         = '';
+    $this->dtstart         = '';
+    $this->lastmodified    = '';
+    $this->rdate           = '';
+    $this->rrule           = '';
+    $this->tzid            = '';
+    $this->tzname          = '';
+    $this->tzoffsetfrom    = '';
+    $this->tzoffsetto      = '';
+    $this->tzurl           = '';
+    $this->xprop           = '';
+
+    $this->components      = array();
+  }
+/**
+ * create formatted output for calendar component VTIMEZONE object instance
+ *
+ * @author Kjell-Inge Gustafsson <ical@kigkonsult.se>
+ * @since 2.5.1 - 2008-10-25
+ * @param array $xcaldecl
+ * @return string
+ */
+  function createComponent( &$xcaldecl ) {
+    $objectname    = $this->_createFormat();
+    $component     = $this->componentStart1.$objectname.$this->componentStart2.$this->nl;
+    $component    .= $this->createTzid();
+    $component    .= $this->createLastModified();
+    $component    .= $this->createTzurl();
+    $component    .= $this->createDtstart();
+    $component    .= $this->createTzoffsetfrom();
+    $component    .= $this->createTzoffsetto();
+    $component    .= $this->createComment();
+    $component    .= $this->createRdate();
+    $component    .= $this->createRrule();
+    $component    .= $this->createTzname();
+    $component    .= $this->createXprop();
+    $component    .= $this->createSubComponent();
+    $component    .= $this->componentEnd1.$objectname.$this->componentEnd2;
+    if( is_array( $this->xcaldecl ) && ( 0 < count( $this->xcaldecl ))) {
+      foreach( $this->xcaldecl as $localxcaldecl )
+        $xcaldecl[] = $localxcaldecl;
+    }
+    return $component;
+  }
+}
+?>
\ No newline at end of file
diff --git a/apps/calendar/libs/oc_calendar.php b/apps/calendar/libs/oc_calendar.php
new file mode 100755
index 00000000000..4f0aa305e49
--- /dev/null
+++ b/apps/calendar/libs/oc_calendar.php
@@ -0,0 +1,72 @@
+<?php
+/**
+/ ownCloud - Calendar Plugin
+/
+/ (c) Copyright 2011 Georg Ehrke
+/ author: Georg Ehrke
+/ email: ownclouddev at georgswebsite dot de
+/ homepage: ownclouddev.georgswebsite.de
+/ License: GPL
+/ <http://www.gnu.org/licenses/>.
+*/
+class OC_CALENDAR_ICAL{
+	public $defaultview;
+	public $calendar;
+	public $calendar_name;
+	public $calendar_status;
+	public $ics_properties;
+	public $VCALENDAR;
+	public $VTIMEZONE;
+	public $DAYLIGHT;
+	
+	function __construct(){
+		include("cfg/" . OC_USER::getUser() . ".cfg.php");
+		include("iCalcreator.php");
+		$this->defaultview = $defaultview;
+		$this->calendar = $calendar;
+		$this->calendar_name = $calendar_name;
+		$this->calendarstatus = $calendar_status;
+	}
+	
+	public function load_ics($path){
+		if(!file_exists("../../data/" . OC_USER::getUser() . $path)){
+			return false;
+		}else{
+			$calfile = file("../../data/" . OC_USER::getUser() . $path);
+			$return = array();
+			$eventnum = 0;
+			foreach($calfile as $line){
+				
+				
+				
+			}
+		}
+	}
+	
+	public function converttojs($cal){
+		
+		
+		
+		
+	}
+	
+	public function addevent($event, $calendar){
+		
+	}
+	
+	public function removeevent($event, $calendar){
+		
+	}
+	
+	public function changeevent($event, $calendar){
+		
+	}
+	
+	public function moveevent($event, $calendar){
+		
+	}
+	
+	public function choosecalendar_dialog(){
+		
+	 }
+}
diff --git a/apps/calendar/libs/sanitize.php b/apps/calendar/libs/sanitize.php
new file mode 100755
index 00000000000..9d6aae24e65
--- /dev/null
+++ b/apps/calendar/libs/sanitize.php
@@ -0,0 +1,271 @@
+<?php
+/*
+ * Copyright (c) 2002,2003 Free Software Foundation
+ * developed under the custody of the
+ * Open Web Application Security Project
+ * (http://www.owasp.org)
+ *
+ * This file is part of the PHP Filters.
+ * PHP Filters is free software; you can redistribute it and/or modify it 
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * PHP Filters is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ * 
+ * If you are not able to view the LICENSE, which should
+ * always be possible within a valid and working PHP Filters release,
+ * please write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * to get a copy of the GNU General Public License or to report a
+ * possible license violation.
+ */
+///////////////////////////////////////
+// sanitize.inc.php
+// Sanitization functions for PHP
+// by: Gavin Zuchlinski, Jamie Pratt, Hokkaido
+// webpage: http://libox.net
+// Last modified: December 21, 2003
+//
+// Many thanks to those on the webappsec list for helping me improve these functions
+///////////////////////////////////////
+// Function list:
+// sanitize_paranoid_string($string) -- input string, returns string stripped of all non
+//           alphanumeric
+// sanitize_system_string($string) -- input string, returns string stripped of special
+//           characters
+// sanitize_sql_string($string) -- input string, returns string with slashed out quotes
+// sanitize_html_string($string) -- input string, returns string with html replacements
+//           for special characters
+// sanitize_int($integer) -- input integer, returns ONLY the integer (no extraneous
+//           characters
+// sanitize_float($float) -- input float, returns ONLY the float (no extraneous
+//           characters)
+// sanitize($input, $flags) -- input any variable, performs sanitization
+//           functions specified in flags. flags can be bitwise
+//           combination of PARANOID, SQL, SYSTEM, HTML, INT, FLOAT, LDAP,
+//           UTF8
+//
+//
+///////////////////////////////////////
+//
+// 20031121 jp - added defines for magic_quotes and register_globals, added ; to replacements
+//               in sanitize_sql_string() function, created rudimentary testing pages
+// 20031221 gz - added nice_addslashes and changed sanitize_sql_string to use it
+//
+/////////////////////////////////////////
+
+define("PARANOID", 1);
+define("SQL", 2);
+define("SYSTEM", 4);
+define("HTML", 8);
+define("INT", 16);
+define("FLOAT", 32);
+define("LDAP", 64);
+define("UTF8", 128);
+
+// get register_globals ini setting - jp
+$register_globals = (bool) ini_get('register_gobals');
+if ($register_globals == TRUE) { define("REGISTER_GLOBALS", 1); } else { define("REGISTER_GLOBALS", 0); }
+
+// get magic_quotes_gpc ini setting - jp
+$magic_quotes = (bool) ini_get('magic_quotes_gpc');
+if ($magic_quotes == TRUE) { define("MAGIC_QUOTES", 1); } else { define("MAGIC_QUOTES", 0); }
+
+// addslashes wrapper to check for gpc_magic_quotes - gz
+function nice_addslashes($string)
+{
+  // if magic quotes is on the string is already quoted, just return it
+  if(MAGIC_QUOTES)
+    return $string;
+  else
+    return addslashes($string);
+}
+
+// internal function for utf8 decoding
+// thanks to Hokkaido for noticing that PHP's utf8_decode function is a little
+// screwy, and to jamie for the code
+function my_utf8_decode($string)
+{
+return strtr($string,
+  "???????��������������������������������������������������������������",
+  "SOZsozYYuAAAAAAACEEEEIIIIDNOOOOOOUUUUYsaaaaaaaceeeeiiiionoooooouuuuyy");
+}
+
+// paranoid sanitization -- only let the alphanumeric set through
+function sanitize_paranoid_string($string, $min='', $max='')
+{
+  $string = preg_replace("/[^a-zA-Z0-9]/", "", $string);
+  $len = strlen($string);
+  if((($min != '') && ($len < $min)) || (($max != '') && ($len > $max)))
+    return FALSE;
+  return $string;
+}
+
+// sanitize a string in prep for passing a single argument to system() (or similar)
+function sanitize_system_string($string, $min='', $max='')
+{
+  $pattern = '/(;|\||`|>|<|&|^|"|'."\n|\r|'".'|{|}|[|]|\)|\()/i'; // no piping, passing possible environment variables ($),
+                           // seperate commands, nested execution, file redirection,
+                           // background processing, special commands (backspace, etc.), quotes
+                           // newlines, or some other special characters
+  $string = preg_replace($pattern, '', $string);
+  $string = '"'.preg_replace('/\$/', '\\\$', $string).'"'; //make sure this is only interpretted as ONE argument
+  $len = strlen($string);
+  if((($min != '') && ($len < $min)) || (($max != '') && ($len > $max)))
+    return FALSE;
+  return $string;
+}
+
+// sanitize a string for SQL input (simple slash out quotes and slashes)
+function sanitize_sql_string($string, $min='', $max='')
+{
+  $string = nice_addslashes($string); //gz
+  $pattern = "/;/"; // jp
+  $replacement = "";
+  $len = strlen($string);
+  if((($min != '') && ($len < $min)) || (($max != '') && ($len > $max)))
+    return FALSE;
+  return preg_replace($pattern, $replacement, $string);
+}
+
+// sanitize a string for SQL input (simple slash out quotes and slashes)
+function sanitize_ldap_string($string, $min='', $max='')
+{
+  $pattern = '/(\)|\(|\||&)/';
+  $len = strlen($string);
+  if((($min != '') && ($len < $min)) || (($max != '') && ($len > $max)))
+    return FALSE;
+  return preg_replace($pattern, '', $string);
+}
+
+
+// sanitize a string for HTML (make sure nothing gets interpretted!)
+function sanitize_html_string($string)
+{
+  $pattern[0] = '/\&/';
+  $pattern[1] = '/</';
+  $pattern[2] = "/>/";
+  $pattern[3] = '/\n/';
+  $pattern[4] = '/"/';
+  $pattern[5] = "/'/";
+  $pattern[6] = "/%/";
+  $pattern[7] = '/\(/';
+  $pattern[8] = '/\)/';
+  $pattern[9] = '/\+/';
+  $pattern[10] = '/-/';
+  $replacement[0] = '&amp;';
+  $replacement[1] = '&lt;';
+  $replacement[2] = '&gt;';
+  $replacement[3] = '<br>';
+  $replacement[4] = '&quot;';
+  $replacement[5] = '&#39;';
+  $replacement[6] = '&#37;';
+  $replacement[7] = '&#40;';
+  $replacement[8] = '&#41;';
+  $replacement[9] = '&#43;';
+  $replacement[10] = '&#45;';
+  return preg_replace($pattern, $replacement, $string);
+}
+
+// make int int!
+function sanitize_int($integer, $min='', $max='')
+{
+  $int = intval($integer);
+  if((($min != '') && ($int < $min)) || (($max != '') && ($int > $max)))
+    return FALSE;
+  return $int;
+}
+
+// make float float!
+function sanitize_float($float, $min='', $max='')
+{
+  $float = floatval($float);
+  if((($min != '') && ($float < $min)) || (($max != '') && ($float > $max)))
+    return FALSE;
+  return $float;
+}
+
+// glue together all the other functions
+function sanitize($input, $flags, $min='', $max='')
+{
+  if($flags & UTF8) $input = my_utf8_decode($input);
+  if($flags & PARANOID) $input = sanitize_paranoid_string($input, $min, $max);
+  if($flags & INT) $input = sanitize_int($input, $min, $max);
+  if($flags & FLOAT) $input = sanitize_float($input, $min, $max);
+  if($flags & HTML) $input = sanitize_html_string($input, $min, $max);
+  if($flags & SQL) $input = sanitize_sql_string($input, $min, $max);
+  if($flags & LDAP) $input = sanitize_ldap_string($input, $min, $max);
+  if($flags & SYSTEM) $input = sanitize_system_string($input, $min, $max);
+  return $input;
+}
+
+function check_paranoid_string($input, $min='', $max='')
+{
+  if($input != sanitize_paranoid_string($input, $min, $max))
+    return FALSE;
+  return TRUE;
+}
+
+function check_int($input, $min='', $max='')
+{
+  if($input != sanitize_int($input, $min, $max))
+    return FALSE;
+  return TRUE;
+}
+
+function check_float($input, $min='', $max='')
+{
+  if($input != sanitize_float($input, $min, $max))
+    return FALSE;
+  return TRUE;
+}
+
+function check_html_string($input, $min='', $max='')
+{
+  if($input != sanitize_html_string($input, $min, $max))
+    return FALSE;
+  return TRUE;
+}
+
+function check_sql_string($input, $min='', $max='')
+{
+  if($input != sanitize_sql_string($input, $min, $max))
+    return FALSE;
+  return TRUE;
+}
+
+function check_ldap_string($input, $min='', $max='')
+{
+  if($input != sanitize_string($input, $min, $max))
+    return FALSE;
+  return TRUE;
+}
+
+function check_system_string($input, $min='', $max='')
+{
+  if($input != sanitize_system_string($input, $min, $max, TRUE))
+    return FALSE;
+  return TRUE;
+}
+
+// glue together all the other functions
+function check($input, $flags, $min='', $max='')
+{
+  $oldput = $input;
+  if($flags & UTF8) $input = my_utf8_decode($input);
+  if($flags & PARANOID) $input = sanitize_paranoid_string($input, $min, $max);
+  if($flags & INT) $input = sanitize_int($input, $min, $max);
+  if($flags & FLOAT) $input = sanitize_float($input, $min, $max);
+  if($flags & HTML) $input = sanitize_html_string($input, $min, $max);
+  if($flags & SQL) $input = sanitize_sql_string($input, $min, $max);
+  if($flags & LDAP) $input = sanitize_ldap_string($input, $min, $max);
+  if($flags & SYSTEM) $input = sanitize_system_string($input, $min, $max, TRUE);
+  if($input != $oldput)
+    return FALSE;
+  return TRUE;
+}
+?>
\ No newline at end of file
diff --git a/apps/calendar/settings.php b/apps/calendar/settings.php
new file mode 100755
index 00000000000..b53851ffe48
--- /dev/null
+++ b/apps/calendar/settings.php
@@ -0,0 +1,27 @@
+<?php
+/************************************************
+* ownCloud - Calendar Plugin                    *
+*                                               *
+* (c) Copyright 2011 Georg Ehrke                *
+* author: Georg Ehrke                           *
+* email: ownclouddev at georgswebsite dot de    *
+* homepage: http://ownclouddev.georgswebsite.de *
+* License: GPL                                  *
+* <http://www.gnu.org/licenses/>.               *
+************************************************/
+require_once('../../lib/base.php');
+if(!OC_USER::isLoggedIn()){
+	header("Location: " . OC_HELPER::linkTo("index.php"));
+	exit();
+}
+if(!file_exists("cfg/" . OC_USER::getUser() . ".cfg.php")){
+	header("Location: install.php");
+}
+OC_UTIL::addScript("calendar", "calendar");
+OC_UTIL::addScript("calendar", "calendar_init");
+OC_UTIL::addStyle("calendar", "style");
+require_once("template.php");
+OC_APP::setActiveNavigationEntry("calendar_settings");
+$output = new OC_TEMPLATE("calendar", "settings", "admin");
+$output->printpage();
+?>
\ No newline at end of file
diff --git a/apps/calendar/templates/calendar.php b/apps/calendar/templates/calendar.php
new file mode 100755
index 00000000000..dbaf2d86f58
--- /dev/null
+++ b/apps/calendar/templates/calendar.php
@@ -0,0 +1,982 @@
+				<div id="devbox">
+				</div>
+				<div class="controls">
+					<div class="actions">
+						<form>
+							<div id="view">
+								<input type="radio" id="onedayview_radio" name="viewchooseradio"/>
+								<label onclick="change_view('onedayview');" for="onedayview_radio">
+									1 Day
+								</label>
+								<input type="radio" id="oneweekview_radio" name="viewchooseradio"/>
+								<label onclick="change_view('oneweekview');" for="oneweekview_radio">
+									1 Week
+								</label>
+								<input type="radio" id="fourweeksview_radio" name="viewchooseradio"/>
+								<label onclick="change_view('fourweeksview');" for="fourweeksview_radio">
+									4 Weeks
+								</label>
+								<input type="radio" id="onemonthview_radio" name="viewchooseradio"/>
+								<label onclick="change_view('onemonthview');" for="onemonthview_radio">
+									1 Month
+								</label>
+								<input type="radio" id="listview_radio" name="viewchooseradio"/>
+								<label onclick="change_view('listview');" for="listview_radio">
+									List
+								</label>
+							</div>
+						</form>
+						<form>
+							<div id="choosecalendar">
+								<input type="radio" id="today_input" checked="checked"/>
+								<label for="today_input" onclick="switch2today();">
+									Today
+								</label>
+								<input type="radio" id="choosecalendar_input" checked="checked"/>
+								<label for="choosecalendar_input" onclick="choosecalendar_dialog();">
+									Choose your Calendar
+								</label>
+							</div>
+						</form>
+						<form>
+							<div id="datecontrol">
+								<input type="radio" id="datecontrol_left" />
+								<label for="datecontrol_left" onclick="update_view('', 'backward');">
+									&lt;
+								</label>
+								<input type="radio" id="datecontrol_date"  checked="checked"/>
+								<label for="datecontrol_date">
+									<p id="datecontrol_date_label">
+										&nbsp;
+									</p>
+								</label>
+								<input type="radio" id="datecontrol_right" />
+								<label for="datecontrol_right" onclick="update_view('', 'forward');">
+									&gt;
+								</label>
+							</div>
+						</form>
+					</div>
+				</div>
+				<div class="controls" id="calendar_holder">
+					<div id="onedayview">
+						<table>
+							<thead>
+								<tr>
+									<th class="calendar_time">Time</th>
+									<th id="onedayview_today" class="calendar_row"></th>
+								</tr>
+							</thead>
+							<tbody>
+								<tr>
+									<td class="calendar_time">All day</td>
+									<td id="onedayview_wholeday" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">00:00</td>
+									<td id="onedayview_0" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">01:00</td>
+									<td id="onedayview_1" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">02:00</td>
+									<td id="onedayview_2" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">03:00</td>
+									<td id="onedayview_3" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">04:00</td>
+									<td id="onedayview_4" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">05:00</td>
+									<td id="onedayview_5" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">06:00</td>
+									<td id="onedayview_6" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">07:00</td>
+									<td id="onedayview_7" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">08:00</td>
+									<td id="onedayview_8" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">09:00</td>
+									<td id="onedayview_9" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">10:00</td>
+									<td id="onedayview_10" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">11:00</td>
+									<td id="onedayview_11" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">12:00</td>
+									<td id="onedayview_12" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">13:00</td>
+									<td id="onedayview_13" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">14:00</td>
+									<td id="onedayview_14" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">15:00</td>
+									<td id="onedayview_15" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">16:00</td>
+									<td id="onedayview_16" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">17:00</td>
+									<td id="onedayview_17" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">18:00</td>
+									<td id="onedayview_18" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">19:00</td>
+									<td id="onedayview_19" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">20:00</td>
+									<td id="onedayview_20" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">21:00</td>
+									<td id="onedayview_21" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">22:00</td>
+									<td id="onedayview_22" class="calendar_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">23:00</td>
+									<td id="onedayview_23" class="calendar_row"></td>
+								</tr>
+							</tbody>
+						</table>
+					</div>
+					<div id="oneweekview">
+						<table>
+							<thead>
+								<tr>
+									<th class="calendar_time">Time</th>
+									<th id="oneweekview_monday" class="calendar_row"></th>
+									<th id="oneweekview_tuesday" class="calendar_row"></th>
+									<th id="oneweekview_wednesday" class="calendar_row"></th>
+									<th id="oneweekview_thursday" class="calendar_row"></th>
+									<th id="oneweekview_friday" class="calendar_row"></th>
+									<th id="oneweekview_saturday" class="weekend_thead"></th>
+									<th id="oneweekview_sunday" class="weekend_thead"></th>
+								</tr>
+							</thead>
+							<tbody>
+								<tr>
+									<td class="calendar_time">All day</td>
+									<td id="oneweekview_monday_allday" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_allday" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_allday" class="calendar_row"></td>
+									<td id="oneweekview_thursday_allday" class="calendar_row"></td>
+									<td id="oneweekview_friday_allday" class="calendar_row"></td>
+									<td id="oneweekview_saturday_allday" class="weekend_row"></td>
+									<td id="oneweekview_sunday_allday" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">00:00</td>
+									<td id="oneweekview_monday_0" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_0" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_0" class="calendar_row"></td>
+									<td id="oneweekview_thursday_0" class="calendar_row"></td>
+									<td id="oneweekview_friday_0" class="calendar_row"></td>
+									<td id="oneweekview_saturday_0" class="weekend_row"></td>
+									<td id="oneweekview_sunday_0" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">01:00</td>
+									<td id="oneweekview_monday_1" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_1" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_1" class="calendar_row"></td>
+									<td id="oneweekview_thursday_1" class="calendar_row"></td>
+									<td id="oneweekview_friday_1" class="calendar_row"></td>
+									<td id="oneweekview_saturday_1" class="weekend_row"></td>
+									<td id="oneweekview_sunday_1" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">02:00</td>
+									<td id="oneweekview_monday_2" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_2" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_2" class="calendar_row"></td>
+									<td id="oneweekview_thursday_2" class="calendar_row"></td>
+									<td id="oneweekview_friday_2" class="calendar_row"></td>
+									<td id="oneweekview_saturday_2" class="weekend_row"></td>
+									<td id="oneweekview_sunday_2" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">03:00</td>
+									<td id="oneweekview_monday_3" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_3" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_3" class="calendar_row"></td>
+									<td id="oneweekview_thursday_3" class="calendar_row"></td>
+									<td id="oneweekview_friday_3" class="calendar_row"></td>
+									<td id="oneweekview_saturday_3" class="weekend_row"></td>
+									<td id="oneweekview_sunday_3" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">04:00</td>
+									<td id="oneweekview_monday_4" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_4" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_4" class="calendar_row"></td>
+									<td id="oneweekview_thursday_4" class="calendar_row"></td>
+									<td id="oneweekview_friday_4" class="calendar_row"></td>
+									<td id="oneweekview_saturday_4" class="weekend_row"></td>
+									<td id="oneweekview_sunday_4" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">05:00</td>
+									<td id="oneweekview_monday_5" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_5" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_5" class="calendar_row"></td>
+									<td id="oneweekview_thursday_5" class="calendar_row"></td>
+									<td id="oneweekview_friday_5" class="calendar_row"></td>
+									<td id="oneweekview_saturday_5" class="weekend_row"></td>
+									<td id="oneweekview_sunday_5" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">06:00</td>
+									<td id="oneweekview_monday_6" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_6" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_6" class="calendar_row"></td>
+									<td id="oneweekview_thursday_6" class="calendar_row"></td>
+									<td id="oneweekview_friday_6" class="calendar_row"></td>
+									<td id="oneweekview_saturday_6" class="weekend_row"></td>
+									<td id="oneweekview_sunday_6" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">07:00</td>
+									<td id="oneweekview_monday_7" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_7" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_7" class="calendar_row"></td>
+									<td id="oneweekview_thursday_7" class="calendar_row"></td>
+									<td id="oneweekview_friday_7" class="calendar_row"></td>
+									<td id="oneweekview_saturday_7" class="weekend_row"></td>
+									<td id="oneweekview_sunday_7" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">08:00</td>
+									<td id="oneweekview_monday_8" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_8" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_8" class="calendar_row"></td>
+									<td id="oneweekview_thursday_8" class="calendar_row"></td>
+									<td id="oneweekview_friday_8" class="calendar_row"></td>
+									<td id="oneweekview_saturday_8" class="weekend_row"></td>
+									<td id="oneweekview_sunday_8" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">09:00</td>
+									<td id="oneweekview_monday_9" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_9" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_9" class="calendar_row"></td>
+									<td id="oneweekview_thursday_9" class="calendar_row"></td>
+									<td id="oneweekview_friday_9" class="calendar_row"></td>
+									<td id="oneweekview_saturday_9" class="weekend_row"></td>
+									<td id="oneweekview_sunday_9" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">10:00</td>
+									<td id="oneweekview_monday_10" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_10" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_10" class="calendar_row"></td>
+									<td id="oneweekview_thursday_10" class="calendar_row"></td>
+									<td id="oneweekview_friday_10" class="calendar_row"></td>
+									<td id="oneweekview_saturday_10" class="weekend_row"></td>
+									<td id="oneweekview_sunday_10" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">11:00</td>
+									<td id="oneweekview_monday_11" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_11" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_11" class="calendar_row"></td>
+									<td id="oneweekview_thursday_11" class="calendar_row"></td>
+									<td id="oneweekview_friday_11" class="calendar_row"></td>
+									<td id="oneweekview_saturday_11" class="weekend_row"></td>
+									<td id="oneweekview_sunday_11" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">12:00</td>
+									<td id="oneweekview_monday_12" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_12" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_12" class="calendar_row"></td>
+									<td id="oneweekview_thursday_12" class="calendar_row"></td>
+									<td id="oneweekview_friday_12" class="calendar_row"></td>
+									<td id="oneweekview_saturday_12" class="weekend_row"></td>
+									<td id="oneweekview_sunday_12" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">13:00</td>
+									<td id="oneweekview_monday_13" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_13" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_13" class="calendar_row"></td>
+									<td id="oneweekview_thursday_13" class="calendar_row"></td>
+									<td id="oneweekview_friday_13" class="calendar_row"></td>
+									<td id="oneweekview_saturday_13" class="weekend_row"></td>
+									<td id="oneweekview_sunday_13" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">14:00</td>
+									<td id="oneweekview_monday_14" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_14" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_14" class="calendar_row"></td>
+									<td id="oneweekview_thursday_14" class="calendar_row"></td>
+									<td id="oneweekview_friday_14" class="calendar_row"></td>
+									<td id="oneweekview_saturday_14" class="weekend_row"></td>
+									<td id="oneweekview_sunday_14" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">15:00</td>
+									<td id="oneweekview_monday_15" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_15" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_15" class="calendar_row"></td>
+									<td id="oneweekview_thursday_15" class="calendar_row"></td>
+									<td id="oneweekview_friday_15" class="calendar_row"></td>
+									<td id="oneweekview_saturday_15" class="weekend_row"></td>
+									<td id="oneweekview_sunday_15" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">16:00</td>
+									<td id="oneweekview_monday_16" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_16" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_16" class="calendar_row"></td>
+									<td id="oneweekview_thursday_16" class="calendar_row"></td>
+									<td id="oneweekview_friday_16" class="calendar_row"></td>
+									<td id="oneweekview_saturday_16" class="weekend_row"></td>
+									<td id="oneweekview_sunday_16" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">17:00</td>
+									<td id="oneweekview_monday_17" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_17" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_17" class="calendar_row"></td>
+									<td id="oneweekview_thursday_17" class="calendar_row"></td>
+									<td id="oneweekview_friday_17" class="calendar_row"></td>
+									<td id="oneweekview_saturday_17" class="weekend_row"></td>
+									<td id="oneweekview_sunday_17" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">18:00</td>
+									<td id="oneweekview_monday_18" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_18" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_18" class="calendar_row"></td>
+									<td id="oneweekview_thursday_18" class="calendar_row"></td>
+									<td id="oneweekview_friday_18" class="calendar_row"></td>
+									<td id="oneweekview_saturday_18" class="weekend_row"></td>
+									<td id="oneweekview_sunday_18" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">19:00</td>
+									<td id="oneweekview_monday_19" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_19" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_19" class="calendar_row"></td>
+									<td id="oneweekview_thursday_19" class="calendar_row"></td>
+									<td id="oneweekview_friday_19" class="calendar_row"></td>
+									<td id="oneweekview_saturday_19" class="weekend_row"></td>
+									<td id="oneweekview_sunday_19" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">20:00</td>
+									<td id="oneweekview_monday_20" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_20" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_20" class="calendar_row"></td>
+									<td id="oneweekview_thursday_20" class="calendar_row"></td>
+									<td id="oneweekview_friday_20" class="calendar_row"></td>
+									<td id="oneweekview_saturday_20" class="weekend_row"></td>
+									<td id="oneweekview_sunday_20" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">21:00</td>
+									<td id="oneweekview_monday_21" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_21" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_21" class="calendar_row"></td>
+									<td id="oneweekview_thursday_21" class="calendar_row"></td>
+									<td id="oneweekview_friday_21" class="calendar_row"></td>
+									<td id="oneweekview_saturday_21" class="weekend_row"></td>
+									<td id="oneweekview_sunday_21" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">22:00</td>
+									<td id="oneweekview_monday_22" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_22" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_22" class="calendar_row"></td>
+									<td id="oneweekview_thursday_22" class="calendar_row"></td>
+									<td id="oneweekview_friday_22" class="calendar_row"></td>
+									<td id="oneweekview_saturday_22" class="weekend_row"></td>
+									<td id="oneweekview_sunday_22" class="weekend_row"></td>
+								</tr>
+								<tr>
+									<td class="calendar_time">23:00</td>
+									<td id="oneweekview_monday_23" class="calendar_row"></td>
+									<td id="oneweekview_tuesday_23" class="calendar_row"></td>
+									<td id="oneweekview_wednesday_23" class="calendar_row"></td>
+									<td id="oneweekview_thursday_23" class="calendar_row"></td>
+									<td id="oneweekview_friday_23" class="calendar_row"></td>
+									<td id="oneweekview_saturday_23" class="weekend_row"></td>
+									<td id="oneweekview_sunday_23" class="weekend_row"></td>
+								</tr>
+							</tbody>
+						</table>
+					</div>
+					<div id="fourweeksview">
+						<table>
+							<thead>
+								<tr>
+									<th id="fourweeksview_calw_label" class="calendar_row">CW</th>
+									<th id="fourweeksview_monday" class="calendar_row">Monday</th>
+									<th id="fourweeksview_tuesday" class="calendar_row">Tuesday</th>
+									<th id="fourweeksview_wednesday" class="calendar_row">Wednesday</th>
+									<th id="fourweeksview_thursday" class="calendar_row">Thursday</th>
+									<th id="fourweeksview_friday" class="calendar_row">Friday</th>
+									<th id="fourweeksview_saturday" class="weekend_thead">Saturday</th>
+									<th id="fourweeksview_sunday" class="weekend_thead">Sunday</th>
+								</tr>
+							</thead>
+							<tbody>
+								<tr id="fourweeksview_week_1">
+									<td id="fourweeksview_calw1"></td>
+									<td id="fourweeksview_monday_1" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_monday_1">
+									</div>
+									<div class="events" id="events_fourweeksview_monday_1">
+									</div>
+									</td>
+									<td id="fourweeksview_tuesday_1" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_tuesday_1">
+									</div>
+									<div class="events" id="events_fourweeksview_tuesday_1">
+									</div>
+									</td>
+									<td id="fourweeksview_wednesday_1" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_wednesday_1">
+									</div>
+									<div class="events" id="events_fourweeksview_wednesday_1">
+									</div>
+									</td>
+									<td id="fourweeksview_thursday_1" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_thursday_1">
+									</div>
+									<div class="events" id="events_fourweeksview_thursday_1">
+									</div>
+									</td>
+									<td id="fourweeksview_friday_1" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_friday_1">
+									</div>
+									<div class="events" id="events_fourweeksview_friday_1">
+									</div>
+									</td>
+									<td id="fourweeksview_saturday_1" class="weekend">
+									<div class="dateinfo" id="dateinfo_fourweeksview_saturday_1">
+									</div>
+									<div class="events" id="events_fourweeksview_saturday_1">
+									</div>
+									</td>
+									<td id="fourweeksview_sunday_1" class="weekend">
+									<div class="dateinfo" id="dateinfo_fourweeksview_sunday_1">
+									</div>
+									<div class="events" id="events_fourweeksview_sunday_1">
+									</div>
+									</td>
+								</tr>
+								<tr id="fourweeksview_week_2">
+									<td id="fourweeksview_calw2"></td>
+									<td id="fourweeksview_monday_2" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_monday_2">
+									</div>
+									<div class="events" id="events_fourweeksview_monday_2">
+									</div>
+									</td>
+									<td id="fourweeksview_tuesday_2" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_tuesday_2">
+									</div>
+									<div class="events" id="events_fourweeksview_tuesday_2">
+									</div>
+									</td>
+									<td id="fourweeksview_wednesday_2" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_wednesday_2">
+									</div>
+									<div class="events" id="events_fourweeksview_wednesday_2">
+									</div>
+									</td>
+									<td id="fourweeksview_thursday_2" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_thursday_2">
+									</div>
+									<div class="events" id="events_fourweeksview_thursday_2">
+									</div>
+									</td>
+									<td id="fourweeksview_friday_2" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_friday_2">
+									</div>
+									<div class="events" id="events_fourweeksview_friday_2">
+									</div>
+									</td>
+									<td id="fourweeksview_saturday_2" class="weekend">
+									<div class="dateinfo" id="dateinfo_fourweeksview_saturday_2">
+									</div>
+									<div class="events" id="events_fourweeksview_saturday_2">
+									</div>
+									</td>
+									<td id="fourweeksview_sunday_2" class="weekend">
+									<div class="dateinfo" id="dateinfo_fourweeksview_sunday_2">
+									</div>
+									<div class="events" id="events_fourweeksview_sunday_2">
+									</div>
+									</td>
+								</tr>
+								<tr id="fourweeksview_week_3">
+									<td id="fourweeksview_calw3"></td>
+									<td id="fourweeksview_monday_3" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_monday_3">
+									</div>
+									<div class="events" id="events_fourweeksview_monday_3">
+									</div>
+									</td>
+									<td id="fourweeksview_tuesday_3" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_tuesday_3">
+									</div>
+									<div class="events" id="events_fourweeksview_tuesday_3">
+									</div>
+									</td>
+									<td id="fourweeksview_wednesday_3" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_wednesday_3">
+									</div>
+									<div class="events" id="events_fourweeksview_wednesday_3">
+									</div>
+									</td>
+									<td id="fourweeksview_thursday_3" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_thursday_3">
+									</div>
+									<div class="events" id="events_fourweeksview_thursday_3">
+									</div>
+									</td>
+									<td id="fourweeksview_friday_3" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_friday_3">
+									</div>
+									<div class="events" id="events_fourweeksview_friday_3">
+									</div>
+									</td>
+									<td id="fourweeksview_saturday_3" class="weekend">
+									<div class="dateinfo" id="dateinfo_fourweeksview_saturday_3">
+									</div>
+									<div class="events" id="events_fourweeksview_saturday_3">
+									</div>
+									</td>
+									<td id="fourweeksview_sunday_3" class="weekend">
+									<div class="dateinfo" id="dateinfo_fourweeksview_sunday_3">
+									</div>
+									<div class="events" id="events_fourweeksview_sunday_3">
+									</div>
+									</td>
+								</tr>
+								<tr id="fourweeksview_week_4">
+									<td id="fourweeksview_calw4"></td>
+									<td id="fourweeksview_monday_4" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_monday_4">
+									</div>
+									<div class="events" id="events_fourweeksview_monday_4">
+									</div>
+									</td>
+									<td id="fourweeksview_tuesday_4" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_tuesday_4">
+									</div>
+									<div class="events" id="events_fourweeksview_tuesday_4">
+									</div>
+									</td>
+									<td id="fourweeksview_wednesday_4" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_wednesday_4">
+									</div>
+									<div class="events" id="events_fourweeksview_wednesday_4">
+									</div>
+									</td>
+									<td id="fourweeksview_thursday_4" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_thursday_4">
+									</div>
+									<div class="events" id="events_fourweeksview_thursday_4">
+									</div>
+									</td>
+									<td id="fourweeksview_friday_4" class="fourweeksview_item">
+									<div class="dateinfo" id="dateinfo_fourweeksview_friday_4">
+									</div>
+									<div class="events" id="events_fourweeksview_friday_4">
+									</div>
+									</td>
+									<td id="fourweeksview_saturday_4" class="weekend">
+									<div class="dateinfo" id="dateinfo_fourweeksview_saturday_4">
+									</div>
+									<div class="events" id="events_fourweeksview_saturday_4">
+									</div>
+									</td>
+									<td id="fourweeksview_sunday_4" class="weekend">
+									<div class="dateinfo" id="dateinfo_fourweeksview_sunday_4">
+									</div>
+									<div class="events" id="events_fourweeksview_sunday_4">
+									</div>
+									</td>
+								</tr>
+							</tbody>
+						</table>
+					</div>
+					<div id="onemonthview">
+						<table>
+							<thead>
+								<tr>
+									<th id="onemonthview_monday" class="calendar_row">Monday</th>
+									<th id="onemonthview_tuesday" class="calendar_row">Tuesday</th>
+									<th id="onemonthview_wednesday" class="calendar_row">Wednesday</th>
+									<th id="onemonthview_thursday" class="calendar_row">Thursday</th>
+									<th id="onemonthview_friday" class="calendar_row">Friday</th>
+									<th id="onemonthview_saturday" class="weekend_thead">Saturday</th>
+									<th id="onemonthview_sunday" class="weekend_thead">Sunday</th>
+								</tr>
+							</thead>
+							<tbody>
+								<tr id="onemonthview_week_1">
+									<td id="onemonthview_monday_1" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_monday_1">
+									</div>
+									<div class="events" id="events_onemonthview_monday_1">
+									</div>
+									</td>
+									<td id="onemonthview_tuesday_1" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_tuesday_1">
+									</div>
+									<div class="events" id="events_onemonthview_tuesday_1">
+									</div>
+									</td>
+									<td id="onemonthview_wednesday_1" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_wednesday_1">
+									</div>
+									<div class="events" id="events_onemonthview_wednesday_1">
+									</div>
+									</td>
+									<td id="onemonthview_thursday_1" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_thursday_1">
+									</div>
+									<div class="events" id="events_onemonthview_thursday_1">
+									</div>
+									</td>
+									<td id="onemonthview_friday_1" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_friday_1">
+									</div>
+									<div class="events" id="events_onemonthview_friday_1">
+									</div>
+									</td>
+									<td id="onemonthview_saturday_1" class="weekend">
+									<div class="dateinfo" id="dateinfo_onemonthview_saturday_1">
+									</div>
+									<div class="events" id="events_onemonthview_saturday_1">
+									</div>
+									</td>
+									<td id="onemonthview_sunday_1" class="weekend">
+									<div class="dateinfo" id="dateinfo_onemonthview_sunday_1">
+									</div>
+									<div class="events" id="events_onemonthview_sunday_1">
+									</div>
+									</td>
+								</tr>
+								<tr id="onemonthview_week_2">
+									<td id="onemonthview_monday_2" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_monday_2">
+									</div>
+									<div class="events" id="events_onemonthview_monday_2">
+									</div>
+									</td>
+									<td id="onemonthview_tuesday_2" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_tuesday_2">
+									</div>
+									<div class="events" id="events_onemonthview_tuesday_2">
+									</div>
+									</td>
+									<td id="onemonthview_wednesday_2" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_wednesday_2">
+									</div>
+									<div class="events" id="events_onemonthview_wednesday_2">
+									</div>
+									</td>
+									<td id="onemonthview_thursday_2" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_thursday_2">
+									</div>
+									<div class="events" id="events_onemonthview_thursday_2">
+									</div>
+									</td>
+									<td id="onemonthview_friday_2" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_friday_2">
+									</div>
+									<div class="events" id="events_onemonthview_friday_2">
+									</div>
+									</td>
+									<td id="onemonthview_saturday_2" class="weekend">
+									<div class="dateinfo" id="dateinfo_onemonthview_saturday_2">
+									</div>
+									<div class="events" id="events_onemonthview_saturday_2">
+									</div>
+									</td>
+									<td id="onemonthview_sunday_2" class="weekend">
+									<div class="dateinfo" id="dateinfo_onemonthview_sunday_2">
+									</div>
+									<div class="events" id="events_onemonthview_sunday_2">
+									</div>
+									</td>
+								</tr>
+								<tr id="onemonthview_week_3">
+									<td id="onemonthview_monday_3" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_monday_3">
+									</div>
+									<div class="events" id="events_onemonthview_monday_3">
+									</div>
+									</td>
+									<td id="onemonthview_tuesday_3" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_tuesday_3">
+									</div>
+									<div class="events" id="events_onemonthview_tuesday_3">
+									</div>
+									</td>
+									<td id="onemonthview_wednesday_3" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_wednesday_3">
+									</div>
+									<div class="events" id="events_onemonthview_wednesday_3">
+									</div>
+									</td>
+									<td id="onemonthview_thursday_3" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_thursday_3">
+									</div>
+									<div class="events" id="events_onemonthview_thursday_3">
+									</div>
+									</td>
+									<td id="onemonthview_friday_3" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_friday_3">
+									</div>
+									<div class="events" id="events_onemonthview_friday_3">
+									</div>
+									</td>
+									<td id="onemonthview_saturday_3" class="weekend">
+									<div class="dateinfo" id="dateinfo_onemonthview_saturday_3">
+									</div>
+									<div class="events" id="events_onemonthview_saturday_3">
+									</div>
+									</td>
+									<td id="onemonthview_sunday_3" class="weekend">
+									<div class="dateinfo" id="dateinfo_onemonthview_sunday_3">
+									</div>
+									<div class="events" id="events_onemonthview_sunday_3">
+									</div>
+									</td>
+								</tr>
+								<tr id="onemonthview_week_4">
+									<td id="onemonthview_monday_4" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_monday_4">
+									</div>
+									<div class="events" id="events_onemonthview_monday_4">
+									</div>
+									</td>
+									<td id="onemonthview_tuesday_4" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_tuesday_4">
+									</div>
+									<div class="events" id="events_onemonthview_tuesday_4">
+									</div>
+									</td>
+									<td id="onemonthview_wednesday_4" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_wednesday_4">
+									</div>
+									<div class="events" id="events_onemonthview_wednesday_4">
+									</div>
+									</td>
+									<td id="onemonthview_thursday_4" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_thursday_4">
+									</div>
+									<div class="events" id="events_onemonthview_thursday_4">
+									</div>
+									</td>
+									<td id="onemonthview_friday_4" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_friday_4">
+									</div>
+									<div class="events" id="events_onemonthview_friday_4">
+									</div>
+									</td>
+									<td id="onemonthview_saturday_4" class="weekend">
+									<div class="dateinfo" id="dateinfo_onemonthview_saturday_4">
+									</div>
+									<div class="events" id="events_onemonthview_saturday_4">
+									</div>
+									</td>
+									<td id="onemonthview_sunday_4" class="weekend">
+									<div class="dateinfo" id="dateinfo_onemonthview_sunday_4">
+									</div>
+									<div class="events" id="events_onemonthview_sunday_4">
+									</div>
+									</td>
+								</tr>
+								<tr id="onemonthview_week_5">
+									<td id="onemonthview_monday_5" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_monday_5">
+									</div>
+									<div class="events" id="events_onemonthview_monday_5">
+									</div>
+									</td>
+									<td id="onemonthview_tuesday_5" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_tuesday_5">
+									</div>
+									<div class="events" id="events_onemonthview_tuesday_5">
+									</div>
+									</td>
+									<td id="onemonthview_wednesday_5" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_wednesday_5">
+									</div>
+									<div class="events" id="events_onemonthview_wednesday_5">
+									</div>
+									</td>
+									<td id="onemonthview_thursday_5" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_thursday_5">
+									</div>
+									<div class="events" id="events_onemonthview_thursday_5">
+									</div>
+									</td>
+									<td id="onemonthview_friday_5" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_friday_5">
+									</div>
+									<div class="events" id="events_onemonthview_friday_5">
+									</div>
+									</td>
+									<td id="onemonthview_saturday_5" class="weekend">
+									<div class="dateinfo" id="dateinfo_onemonthview_saturday_5">
+									</div>
+									<div class="events" id="events_onemonthview_saturday_5">
+									</div>
+									</td>
+									<td id="onemonthview_sunday_5" class="weekend">
+									<div class="dateinfo" id="dateinfo_onemonthview_sunday_5">
+									</div>
+									<div class="events" id="events_onemonthview_sunday_5">
+									</div>
+									</td>
+								</tr>
+								<tr id="onemonthview_week_6">
+									<td id="onemonthview_monday_6" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_monday_6">
+									</div>
+									<div class="events" id="events_onemonthview_monday_6">
+									</div>
+									</td>
+									<td id="onemonthview_tuesday_6" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_tuesday_6">
+									</div>
+									<div class="events" id="events_onemonthview_tuesday_6">
+									</div>
+									</td>
+									<td id="onemonthview_wednesday_6" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_wednesday_6">
+									</div>
+									<div class="events" id="events_onemonthview_wednesday_6">
+									</div>
+									</td>
+									<td id="onemonthview_thursday_6" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_thursday_6">
+									</div>
+									<div class="events" id="events_onemonthview_thursday_6">
+									</div>
+									</td>
+									<td id="onemonthview_friday_6" class="onemonthview_item">
+									<div class="dateinfo" id="dateinfo_onemonthview_friday_6">
+									</div>
+									<div class="events" id="events_onemonthview_friday_6">
+									</div>
+									</td>
+									<td id="onemonthview_saturday_6" class="weekend">
+									<div class="dateinfo" id="dateinfo_onemonthview_saturday_6">
+									</div>
+									<div class="events" id="events_onemonthview_saturday_6">
+									</div>
+									</td>
+									<td id="onemonthview_sunday_6" class="weekend">
+									<div class="dateinfo" id="dateinfo_onemonthview_sunday_6">
+									</div>
+									<div class="events" id="events_onemonthview_sunday_6">
+									</div>
+									</td>
+								</tr>
+							</tbody>
+						</table>
+					</div>
+					<div id="listview">
+						
+					</div>
+					<p class="center">
+						<a href="http://ownclouddev.georgswebsite.de/feedback/" target="_blank">Feedback</a>&nbsp;&nbsp;&nbsp;&diams;&nbsp;&nbsp;&nbsp;
+						<a href="http://ownclouddev.georgswebsite.de/devinfo/" target="_blank">Developer information</a>&nbsp;&nbsp;&nbsp;&diams;&nbsp;&nbsp;&nbsp;
+						<a href="http://ownclouddev.georgswebsite.de/bugs/">Bugs</a>
+					</p>
+				</div>
+				<!-- Dialogs -->
+				<div id="choosecalendar_dialog" title="Please choose visible calendars.">
+					<br/>
+					<input type="checkbox" class="choosecalendar_check" id="choosecalendar_cal1" />
+					<label for="choosecalendar_cal1">
+						Calendar 1
+					</label>
+					<br/>
+					<br/>
+					<input type="checkbox" class="choosecalendar_check" id="choosecalendar_cal2" />
+					<label for="choosecalendar_cal2">
+						Calendar 2
+					</label>
+					<br/>
+					<br/>
+					<input type="checkbox" class="choosecalendar_check" id="choosecalendar_cal3" />
+					<label for="choosecalendar_cal3">
+						Calendar 3
+					</label>
+					<br/>
+					<br/>
+					<input type="checkbox" class="choosecalendar_check" id="choosecalendar_cal4" />
+					<label for="choosecalendar_cal4">
+						Calendar 4
+					</label>
+					<br/>
+					<br />
+					<input type="submit" class="choosecalendar_check" id="choosecalendar_submit" onclick="choosecalendar_dialog_submit();" value="Save"/>
+				</div>
+				<div id="newevent" title="Create a new event">
+				</div>
+				<div id="editevent" title="Edit a event">
+				</div>
+				<div id="parsingfail_dialog" title="Parsing Fail">
+					There was a fail, while parsing the file.
+				</div>
+				<!-- End of Dialogs -->
+				<script type="text/javascript">
+				<?php
+				include("cfg/" . OC_USER::getUser() . ".cfg.php");
+				echo "var currentview = \"" . $defaultview . "\";\n";
+				?>
+				document.getElementById(currentview).style.display = "block";
+				document.getElementById(currentview + "_radio").checked = "checked";
+				update_view(currentview);
+				function change_view(view, task){
+					document.getElementById(currentview).style.display = "none";
+					document.getElementById(view).style.display = "block";
+					currentview = view;
+					update_view(view, task);
+				}
+				</script>
+				<script type="text/javascript" id="js_events"></script>
diff --git a/apps/calendar/templates/install.php b/apps/calendar/templates/install.php
new file mode 100755
index 00000000000..e69de29bb2d
--- /dev/null
+++ b/apps/calendar/templates/install.php
diff --git a/apps/calendar/templates/settings.php b/apps/calendar/templates/settings.php
new file mode 100755
index 00000000000..fbb42202f2c
--- /dev/null
+++ b/apps/calendar/templates/settings.php
@@ -0,0 +1,17 @@
+<fieldset>
+	<legend>Please choose your default view:</legend>
+	<input type="radio" id="oneday" name="radio"/><label for="oneday">One Day</label>
+	<input type="radio" id="oneweek" name="radio"/><label for="oneweek">One Week</label>
+	<input type="radio" id="fourweek" name="radio"/><label for="fourweek">Four Weeks</label>
+	<input type="radio" id="onemonth" name="radio"/><label for="onemonth">One Month</label>
+	<input type="radio" id="list" name="radio"/><label for="list">List</label>
+</fieldset>
+
+<fieldset>
+	<legend>Calender Files</legend>
+	<ul>
+	<?php
+	showicsfiles();
+	?>
+	</ul>
+</fieldset>
\ No newline at end of file