* project settings split in 4 tabs

* prototype.js upgraded to 1.5.0_rc1

git-svn-id: http://redmine.rubyforge.org/svn/trunk@181 e93f8b46-1217-0410-a6f0-8f06a7374b81

8 files changed, 918 insertions, 328 deletions

diff --git a/app/controllers/issue_categories_controller.rb b/app/controllers/issue_categories_controller.rb
index 7f2e4cbe2..1658e98c7 100644
--- a/app/controllers/issue_categories_controller.rb
+++ b/app/controllers/issue_categories_controller.rb
@@ -22,16 +22,16 @@ class IssueCategoriesController < ApplicationController
   def edit
     if request.post? and @category.update_attributes(params[:category])
       flash[:notice] = l(:notice_successful_update)
-      redirect_to :controller => 'projects', :action => 'settings', :id => @project
+      redirect_to :controller => 'projects', :action => 'settings', :tab => 'categories', :id => @project
     end
   end
 
   def destroy
     @category.destroy
-    redirect_to :controller => 'projects', :action => 'settings', :id => @project

+    redirect_to :controller => 'projects', :action => 'settings', :tab => 'categories', :id => @project

   rescue

     flash[:notice] = "Categorie can't be deleted"
-    redirect_to :controller => 'projects', :action => 'settings', :id => @project

+    redirect_to :controller => 'projects', :action => 'settings', :tab => 'categories', :id => @project

   end

 
 private

diff --git a/app/controllers/members_controller.rb b/app/controllers/members_controller.rb
index f595f2cf6..089a18e6a 100644
--- a/app/controllers/members_controller.rb
+++ b/app/controllers/members_controller.rb
@@ -16,21 +16,21 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

 

 class MembersController < ApplicationController
-	layout 'base'

-	before_filter :find_project, :authorize

+  layout 'base'

+  before_filter :find_project, :authorize

 
-	def edit
-		if request.post? and @member.update_attributes(params[:member])
-			flash[:notice] = l(:notice_successful_update)
-			redirect_to :controller => 'projects', :action => 'settings', :id => @project

-		end
-	end
-
-	def destroy
-		@member.destroy

+  def edit
+    if request.post? and @member.update_attributes(params[:member])

+      flash[:notice] = l(:notice_successful_update)
+      redirect_to :controller => 'projects', :action => 'settings', :tab => 'members', :id => @project

+    end
+  end
+

+  def destroy
+    @member.destroy

     flash[:notice] = l(:notice_successful_delete)
-		redirect_to :controller => 'projects', :action => 'settings', :id => @project
-	end

+    redirect_to :controller => 'projects', :action => 'settings', :tab => 'members', :id => @project
+  end

 

 private

   def find_project

diff --git a/app/controllers/projects_controller.rb b/app/controllers/projects_controller.rb
index 3979d7f64..48b4be205 100644
--- a/app/controllers/projects_controller.rb
+++ b/app/controllers/projects_controller.rb
@@ -138,7 +138,7 @@ class ProjectsController < ApplicationController
       @issue_category = @project.issue_categories.build(params[:issue_category])

       if @issue_category.save

         flash[:notice] = l(:notice_successful_create)

-        redirect_to :action => 'settings', :id => @project

+        redirect_to :action => 'settings', :tab => 'categories', :id => @project

       else

         settings

         render :action => 'settings'

@@ -151,7 +151,7 @@ class ProjectsController < ApplicationController
   	@version = @project.versions.build(params[:version])

   	if request.post? and @version.save

   	  flash[:notice] = l(:notice_successful_create)

-      redirect_to :action => 'settings', :id => @project

+      redirect_to :action => 'settings', :tab => 'versions', :id => @project

   	end

   end

 

@@ -161,7 +161,7 @@ class ProjectsController < ApplicationController
   	if request.post?

       if @member.save

         flash[:notice] = l(:notice_successful_create)

-        redirect_to :action => 'settings', :id => @project

+        redirect_to :action => 'settings', :tab => 'members', :id => @project

       else		

         settings

         render :action => 'settings'

diff --git a/app/controllers/versions_controller.rb b/app/controllers/versions_controller.rb
index 5c2dcc7f6..f5fd4e233 100644
--- a/app/controllers/versions_controller.rb
+++ b/app/controllers/versions_controller.rb
@@ -22,16 +22,16 @@ class VersionsController < ApplicationController
   def edit
     if request.post? and @version.update_attributes(params[:version])
       flash[:notice] = l(:notice_successful_update)
-      redirect_to :controller => 'projects', :action => 'settings', :id => @project
+      redirect_to :controller => 'projects', :action => 'settings', :tab => 'versions', :id => @project
     end
   end
 
   def destroy

     @version.destroy
-    redirect_to :controller => 'projects', :action => 'settings', :id => @project

+    redirect_to :controller => 'projects', :action => 'settings', :tab => 'versions', :id => @project

   rescue

     flash[:notice] = "Unable to delete version"

-    redirect_to :controller => 'projects', :action => 'settings', :id => @project

+    redirect_to :controller => 'projects', :action => 'settings', :tab => 'versions', :id => @project

   end

 

   def download

diff --git a/app/views/projects/settings.rhtml b/app/views/projects/settings.rhtml
index 605946576..6a2652c07 100644
--- a/app/views/projects/settings.rhtml
+++ b/app/views/projects/settings.rhtml
@@ -1,13 +1,24 @@
 <h2><%=l(:label_settings)%></h2>
 
+<div class="tabs">
+<ul>
+<li><%= link_to l(:label_information_plural), {}, :id=> "tab-info", :onclick => "showTab('info'); this.blur(); return false;" %></li>
+<li><%= link_to l(:label_member_plural), {}, :id=> "tab-members", :onclick => "showTab('members'); this.blur(); return false;" %></li>
+<li><%= link_to l(:label_version_plural), {}, :id=> "tab-versions", :onclick => "showTab('versions'); this.blur(); return false;" %></li>
+<li><%= link_to l(:label_issue_category_plural), {}, :id=> "tab-categories", :onclick => "showTab('categories'); this.blur(); return false;" %></li>
+</ul>
+</div>
+
+<div id="tab-content-info" class="tab-content">
 <% if authorize_for('projects', 'edit') %>

 	<% labelled_tabular_form_for :project, @project, :url => { :action => "edit", :id => @project } do |f| %>
 	<%= render :partial => 'form', :locals => { :f => f } %>
 	<%= submit_tag l(:button_save) %>
 	<% end %>
-	<br />&nbsp;
 <% end %>
-

+</div>
+
+<div id="tab-content-members" class="tab-content" style="display:none;">
 <div class="box">
 <h3><%=l(:label_member_plural)%></h3>

 <%= error_messages_for 'member' %>

@@ -36,7 +47,7 @@
 <% if authorize_for('projects', 'add_member') %>

     <hr />

     <label><%=l(:label_member_new)%></label><br/>

-    <%= start_form_tag :controller => 'projects', :action => 'add_member', :id => @project %>

+    <%= start_form_tag :controller => 'projects', :action => 'add_member', :tab => 'members', :id => @project %>

     <select name="member[user_id]">

     <%= options_from_collection_for_select @users, "id", "display_name", @member.user_id %>
     </select>

@@ -47,7 +58,9 @@
     <%= end_form_tag %>
 <% end %>

 </div>

-

+</div>
+
+<div id="tab-content-versions" class="tab-content" style="display:none;">
 <div class="box">

 <h3><%=l(:label_version_plural)%></h3>

 <table>

@@ -68,8 +81,9 @@
     <%= link_to l(:label_version_new), :controller => 'projects', :action => 'add_version', :id => @project %>

 <% end %>

 </div>

-

-

+</div>

+
+<div id="tab-content-categories" class="tab-content" style="display:none;">
 <div class="box">

 <h3><%=l(:label_issue_category_plural)%></h3>
 <table>

@@ -95,7 +109,7 @@
 </table>
 <% if authorize_for('projects', 'add_issue_category') %>

     <hr />

-    <%= start_form_tag :action => 'add_issue_category', :id => @project %>
+    <%= start_form_tag :action => 'add_issue_category', :tab => 'categories', :id => @project %>
     <label for="issue_category_name"><%=l(:label_issue_category_new)%></label><br/>
     <%= error_messages_for 'issue_category' %>

     <%= text_field 'issue_category', 'name', :size => 25 %>
@@ -103,3 +117,7 @@
     <%= end_form_tag %>

 <% end %>

 </div>

+</div>
+
+<%= tab = params[:tab] ? h(params[:tab]) : 'info'
+javascript_tag "showTab('#{tab}');" %>
\ No newline at end of file
diff --git a/public/javascripts/application.js b/public/javascripts/application.js
index 3625914ab..c8a790472 100644
--- a/public/javascripts/application.js
+++ b/public/javascripts/application.js
@@ -16,4 +16,18 @@ function addFileField() {
     p = document.getElementById("attachments_p");

     p.appendChild(document.createElement("br"));

     p.appendChild(f);

+}

+

+function showTab(name) {

+    var f = $$('div#content .tab-content');

+	for(var i=0; i<f.length; i++){

+		Element.hide(f[i]);

+	}

+    var f = $$('div.tabs a');

+	for(var i=0; i<f.length; i++){

+		Element.removeClassName(f[i], "selected");

+	}

+	Element.show('tab-content-' + name);

+	Element.addClassName('tab-' + name, "selected");

+	return false;

 }
\ No newline at end of file
diff --git a/public/javascripts/prototype.js b/public/javascripts/prototype.js
index e9ccd3c88..e48775468 100644
--- a/public/javascripts/prototype.js
+++ b/public/javascripts/prototype.js
@@ -1,21 +1,20 @@
-/*  Prototype JavaScript framework, version 1.4.0
+/*  Prototype JavaScript framework, version 1.5.0_rc1
  *  (c) 2005 Sam Stephenson <sam@conio.net>
  *
- *  THIS FILE IS AUTOMATICALLY GENERATED. When sending patches, please diff
- *  against the source tree, available from the Prototype darcs repository.
- *
  *  Prototype is freely distributable under the terms of an MIT-style license.
- *
  *  For details, see the Prototype web site: http://prototype.conio.net/
  *
 /*--------------------------------------------------------------------------*/
 
 var Prototype = {
-  Version: '1.4.0',
-  ScriptFragment: '(?:<script.*?>)((\n|\r|.)*?)(?:<\/script>)',
+  Version: '1.5.0_rc1',
+  BrowserFeatures: {
+    XPath: !!document.evaluate
+  },
 
+  ScriptFragment: '(?:<script.*?>)((\n|\r|.)*?)(?:<\/script>)',
   emptyFunction: function() {},
-  K: function(x) {return x}
+  K: function(x) { return x }
 }
 
 var Class = {
@@ -29,22 +28,42 @@ var Class = {
 var Abstract = new Object();
 
 Object.extend = function(destination, source) {
-  for (property in source) {
+  for (var property in source) {
     destination[property] = source[property];
   }
   return destination;
 }
 
-Object.inspect = function(object) {
-  try {
-    if (object == undefined) return 'undefined';
-    if (object == null) return 'null';
-    return object.inspect ? object.inspect() : object.toString();
-  } catch (e) {
-    if (e instanceof RangeError) return '...';
-    throw e;
+Object.extend(Object, {
+  inspect: function(object) {
+    try {
+      if (object === undefined) return 'undefined';
+      if (object === null) return 'null';
+      return object.inspect ? object.inspect() : object.toString();
+    } catch (e) {
+      if (e instanceof RangeError) return '...';
+      throw e;
+    }
+  },
+
+  keys: function(object) {
+    var keys = [];
+    for (var property in object)
+      keys.push(property);
+    return keys;
+  },
+
+  values: function(object) {
+    var values = [];
+    for (var property in object)
+      values.push(object[property]);
+    return values;
+  },
+
+  clone: function(object) {
+    return Object.extend({}, object);
   }
-}
+});
 
 Function.prototype.bind = function() {
   var __method = this, args = $A(arguments), object = args.shift();
@@ -54,9 +73,9 @@ Function.prototype.bind = function() {
 }
 
 Function.prototype.bindAsEventListener = function(object) {
-  var __method = this;
+  var __method = this, args = $A(arguments), object = args.shift();
   return function(event) {
-    return __method.call(object, event || window.event);
+    return __method.apply(object, [( event || window.event)].concat(args).concat($A(arguments)));
   }
 }
 
@@ -106,40 +125,69 @@ PeriodicalExecuter.prototype = {
   },
 
   registerCallback: function() {
-    setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
+    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
+  },
+
+  stop: function() {
+    if (!this.timer) return;
+    clearInterval(this.timer);
+    this.timer = null;
   },
 
   onTimerEvent: function() {
     if (!this.currentlyExecuting) {
       try {
         this.currentlyExecuting = true;
-        this.callback();
+        this.callback(this);
       } finally {
         this.currentlyExecuting = false;
       }
     }
   }
 }
+Object.extend(String.prototype, {
+  gsub: function(pattern, replacement) {
+    var result = '', source = this, match;
+    replacement = arguments.callee.prepareReplacement(replacement);
+
+    while (source.length > 0) {
+      if (match = source.match(pattern)) {
+        result += source.slice(0, match.index);
+        result += (replacement(match) || '').toString();
+        source  = source.slice(match.index + match[0].length);
+      } else {
+        result += source, source = '';
+      }
+    }
+    return result;
+  },
 
-/*--------------------------------------------------------------------------*/
+  sub: function(pattern, replacement, count) {
+    replacement = this.gsub.prepareReplacement(replacement);
+    count = count === undefined ? 1 : count;
 
-function $() {
-  var elements = new Array();
+    return this.gsub(pattern, function(match) {
+      if (--count < 0) return match[0];
+      return replacement(match);
+    });
+  },
 
-  for (var i = 0; i < arguments.length; i++) {
-    var element = arguments[i];
-    if (typeof element == 'string')
-      element = document.getElementById(element);
+  scan: function(pattern, iterator) {
+    this.gsub(pattern, iterator);
+    return this;
+  },
 
-    if (arguments.length == 1)
-      return element;
+  truncate: function(length, truncation) {
+    length = length || 30;
+    truncation = truncation === undefined ? '...' : truncation;
+    return this.length > length ?
+      this.slice(0, length - truncation.length) + truncation : this;
+  },
 
-    elements.push(element);
-  }
+  strip: function() {
+    return this.replace(/^\s+/, '').replace(/\s+$/, '');
+  },
 
-  return elements;
-}
-Object.extend(String.prototype, {
   stripTags: function() {
     return this.replace(/<\/?[^>]+>/gi, '');
   },
@@ -157,7 +205,7 @@ Object.extend(String.prototype, {
   },
 
   evalScripts: function() {
-    return this.extractScripts().map(eval);
+    return this.extractScripts().map(function(script) { return eval(script) });
   },
 
   escapeHTML: function() {
@@ -174,10 +222,13 @@ Object.extend(String.prototype, {
   },
 
   toQueryParams: function() {
-    var pairs = this.match(/^\??(.*)$/)[1].split('&');
+    var match = this.strip().match(/[^?]*$/)[0];
+    if (!match) return {};
+    var pairs = match.split('&');
     return pairs.inject({}, function(params, pairString) {
-      var pair = pairString.split('=');
-      params[pair[0]] = pair[1];
+      var pair  = pairString.split('=');
+      var value = pair[1] ? decodeURIComponent(pair[1]) : undefined;
+      params[decodeURIComponent(pair[0])] = value;
       return params;
     });
   },
@@ -194,7 +245,7 @@ Object.extend(String.prototype, {
       ? oStringList[0].charAt(0).toUpperCase() + oStringList[0].substring(1)
       : oStringList[0];
 
-    for (var i = 1, len = oStringList.length; i < len; i++) {
+    for (var i = 1, length = oStringList.length; i < length; i++) {
       var s = oStringList[i];
       camelizedString += s.charAt(0).toUpperCase() + s.substring(1);
     }
@@ -202,13 +253,40 @@ Object.extend(String.prototype, {
     return camelizedString;
   },
 
-  inspect: function() {
-    return "'" + this.replace('\\', '\\\\').replace("'", '\\\'') + "'";
+  inspect: function(useDoubleQuotes) {
+    var escapedString = this.replace(/\\/g, '\\\\');
+    if (useDoubleQuotes)
+      return '"' + escapedString.replace(/"/g, '\\"') + '"';
+    else
+      return "'" + escapedString.replace(/'/g, '\\\'') + "'";
   }
 });
 
+String.prototype.gsub.prepareReplacement = function(replacement) {
+  if (typeof replacement == 'function') return replacement;
+  var template = new Template(replacement);
+  return function(match) { return template.evaluate(match) };
+}
+
 String.prototype.parseQuery = String.prototype.toQueryParams;
 
+var Template = Class.create();
+Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
+Template.prototype = {
+  initialize: function(template, pattern) {
+    this.template = template.toString();
+    this.pattern  = pattern || Template.Pattern;
+  },
+
+  evaluate: function(object) {
+    return this.template.gsub(this.pattern, function(match) {
+      var before = match[1];
+      if (before == '\\') return match[2];
+      return before + (object[match[3]] || '').toString();
+    });
+  }
+}
+
 var $break    = new Object();
 var $continue = new Object();
 
@@ -226,6 +304,14 @@ var Enumerable = {
     } catch (e) {
       if (e != $break) throw e;
     }
+    return this;
+  },
+
+  eachSlice: function(number, iterator) {
+    var index = -number, slices = [], array = this.toArray();
+    while ((index += number) < array.length)
+      slices.push(array.slice(index, index+number));
+    return slices.collect(iterator || Prototype.K);
   },
 
   all: function(iterator) {
@@ -238,7 +324,7 @@ var Enumerable = {
   },
 
   any: function(iterator) {
-    var result = true;
+    var result = false;
     this.each(function(value, index) {
       if (result = !!(iterator || Prototype.K)(value, index))
         throw $break;
@@ -254,7 +340,7 @@ var Enumerable = {
     return results;
   },
 
-  detect: function (iterator) {
+  detect: function(iterator) {
     var result;
     this.each(function(value, index) {
       if (iterator(value, index)) {
@@ -295,6 +381,15 @@ var Enumerable = {
     return found;
   },
 
+  inGroupsOf: function(number, fillWith) {
+    fillWith = fillWith || null;
+    var results = this.eachSlice(number);
+    if (results.length > 0) (number - results.last().length).times(function() {
+      results.last().push(fillWith)
+    });
+    return results;
+  },
+
   inject: function(memo, iterator) {
     this.each(function(value, index) {
       memo = iterator(memo, value, index);
@@ -313,7 +408,7 @@ var Enumerable = {
     var result;
     this.each(function(value, index) {
       value = (iterator || Prototype.K)(value, index);
-      if (value >= (result || value))
+      if (result == undefined || value >= result)
         result = value;
     });
     return result;
@@ -323,7 +418,7 @@ var Enumerable = {
     var result;
     this.each(function(value, index) {
       value = (iterator || Prototype.K)(value, index);
-      if (value <= (result || value))
+      if (result == undefined || value < result)
         result = value;
     });
     return result;
@@ -375,8 +470,7 @@ var Enumerable = {
 
     var collections = [this].concat(args).map($A);
     return this.map(function(value, index) {
-      iterator(value = collections.pluck(index));
-      return value;
+      return iterator(collections.pluck(index));
     });
   },
 
@@ -398,7 +492,7 @@ var $A = Array.from = function(iterable) {
     return iterable.toArray();
   } else {
     var results = [];
-    for (var i = 0; i < iterable.length; i++)
+    for (var i = 0, length = iterable.length; i < length; i++)
       results.push(iterable[i]);
     return results;
   }
@@ -406,11 +500,12 @@ var $A = Array.from = function(iterable) {
 
 Object.extend(Array.prototype, Enumerable);
 
-Array.prototype._reverse = Array.prototype.reverse;
+if (!Array.prototype._reverse)
+  Array.prototype._reverse = Array.prototype.reverse;
 
 Object.extend(Array.prototype, {
   _each: function(iterator) {
-    for (var i = 0; i < this.length; i++)
+    for (var i = 0, length = this.length; i < length; i++)
       iterator(this[i]);
   },
 
@@ -435,7 +530,7 @@ Object.extend(Array.prototype, {
 
   flatten: function() {
     return this.inject([], function(array, value) {
-      return array.concat(value.constructor == Array ?
+      return array.concat(value && value.constructor == Array ?
         value.flatten() : [value]);
     });
   },
@@ -448,7 +543,7 @@ Object.extend(Array.prototype, {
   },
 
   indexOf: function(object) {
-    for (var i = 0; i < this.length; i++)
+    for (var i = 0, length = this.length; i < length; i++)
       if (this[i] == object) return i;
     return -1;
   },
@@ -457,21 +552,29 @@ Object.extend(Array.prototype, {
     return (inline !== false ? this : this.toArray())._reverse();
   },
 
-  shift: function() {
-    var result = this[0];
-    for (var i = 0; i < this.length - 1; i++)
-      this[i] = this[i + 1];
-    this.length--;
-    return result;
+  reduce: function() {
+    return this.length > 1 ? this : this[0];
+  },
+
+  uniq: function() {
+    return this.inject([], function(array, value) {
+      return array.include(value) ? array : array.concat([value]);
+    });
+  },
+
+  clone: function() {
+    return [].concat(this);
   },
 
   inspect: function() {
     return '[' + this.map(Object.inspect).join(', ') + ']';
   }
 });
+
+Array.prototype.toArray = Array.prototype.clone;
 var Hash = {
   _each: function(iterator) {
-    for (key in this) {
+    for (var key in this) {
       var value = this[key];
       if (typeof value == 'function') continue;
 
@@ -491,7 +594,7 @@ var Hash = {
   },
 
   merge: function(hash) {
-    return $H(hash).inject($H(this), function(mergedHash, pair) {
+    return $H(hash).inject(this, function(mergedHash, pair) {
       mergedHash[pair.key] = pair.value;
       return mergedHash;
     });
@@ -499,6 +602,8 @@ var Hash = {
 
   toQueryString: function() {
     return this.map(function(pair) {
+      if (!pair.value && pair.value !== 0) pair[1] = '';
+      if (!pair.key) return;
       return pair.map(encodeURIComponent).join('=');
     }).join('&');
   },
@@ -527,10 +632,10 @@ Object.extend(ObjectRange.prototype, {
 
   _each: function(iterator) {
     var value = this.start;
-    do {
+    while (this.include(value)) {
       iterator(value);
       value = value.succ();
-    } while (this.include(value));
+    }
   },
 
   include: function(value) {
@@ -549,9 +654,9 @@ var $R = function(start, end, exclusive) {
 var Ajax = {
   getTransport: function() {
     return Try.these(
+      function() {return new XMLHttpRequest()},
       function() {return new ActiveXObject('Msxml2.XMLHTTP')},
-      function() {return new ActiveXObject('Microsoft.XMLHTTP')},
-      function() {return new XMLHttpRequest()}
+      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
     ) || false;
   },
 
@@ -565,18 +670,18 @@ Ajax.Responders = {
     this.responders._each(iterator);
   },
 
-  register: function(responderToAdd) {
-    if (!this.include(responderToAdd))
-      this.responders.push(responderToAdd);
+  register: function(responder) {
+    if (!this.include(responder))
+      this.responders.push(responder);
   },
 
-  unregister: function(responderToRemove) {
-    this.responders = this.responders.without(responderToRemove);
+  unregister: function(responder) {
+    this.responders = this.responders.without(responder);
   },
 
   dispatch: function(callback, request, transport, json) {
     this.each(function(responder) {
-      if (responder[callback] && typeof responder[callback] == 'function') {
+      if (typeof responder[callback] == 'function') {
         try {
           responder[callback].apply(responder, [request, transport, json]);
         } catch (e) {}
@@ -591,7 +696,6 @@ Ajax.Responders.register({
   onCreate: function() {
     Ajax.activeRequestCount++;
   },
-
   onComplete: function() {
     Ajax.activeRequestCount--;
   }
@@ -603,19 +707,15 @@ Ajax.Base.prototype = {
     this.options = {
       method:       'post',
       asynchronous: true,
+      contentType:  'application/x-www-form-urlencoded',
+      encoding:     'UTF-8',
       parameters:   ''
     }
     Object.extend(this.options, options || {});
-  },
-
-  responseIsSuccess: function() {
-    return this.transport.status == undefined
-        || this.transport.status == 0
-        || (this.transport.status >= 200 && this.transport.status < 300);
-  },
 
-  responseIsFailure: function() {
-    return !this.responseIsSuccess();
+    this.options.method = this.options.method.toLowerCase();
+    this.options.parameters = $H(typeof this.options.parameters == 'string' ?
+      this.options.parameters.toQueryParams() : this.options.parameters);
   }
 }
 
@@ -631,111 +731,145 @@ Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
   },
 
   request: function(url) {
-    var parameters = this.options.parameters || '';
-    if (parameters.length > 0) parameters += '&_=';
+    var params = this.options.parameters;
+    if (params.any()) params['_'] = '';
 
-    try {
-      this.url = url;
-      if (this.options.method == 'get' && parameters.length > 0)
-        this.url += (this.url.match(/\?/) ? '&' : '?') + parameters;
+    if (!['get', 'post'].include(this.options.method)) {
+      // simulate other verbs over post
+      params['_method'] = this.options.method;
+      this.options.method = 'post';
+    }
+
+    this.url = url;
+
+    // when GET, append parameters to URL
+    if (this.options.method == 'get' && params.any())
+      this.url += (this.url.indexOf('?') >= 0 ? '&' : '?') +
+        params.toQueryString();
 
+    try {
       Ajax.Responders.dispatch('onCreate', this, this.transport);
 
-      this.transport.open(this.options.method, this.url,
-        this.options.asynchronous);
+      this.transport.open(this.options.method.toUpperCase(), this.url,
+        this.options.asynchronous, this.options.username,
+        this.options.password);
 
-      if (this.options.asynchronous) {
-        this.transport.onreadystatechange = this.onStateChange.bind(this);
-        setTimeout((function() {this.respondToReadyState(1)}).bind(this), 10);
-      }
+      if (this.options.asynchronous)
+        setTimeout(function() { this.respondToReadyState(1) }.bind(this), 10);
 
+      this.transport.onreadystatechange = this.onStateChange.bind(this);
       this.setRequestHeaders();
 
-      var body = this.options.postBody ? this.options.postBody : parameters;
-      this.transport.send(this.options.method == 'post' ? body : null);
+      var body = this.options.method == 'post' ?
+        (this.options.postBody || params.toQueryString()) : null;
 
-    } catch (e) {
+      this.transport.send(body);
+
+      /* Force Firefox to handle ready state 4 for synchronous requests */
+      if (!this.options.asynchronous && this.transport.overrideMimeType)
+        this.onStateChange();
+    }
+    catch (e) {
       this.dispatchException(e);
     }
   },
 
+  onStateChange: function() {
+    var readyState = this.transport.readyState;
+    if (readyState > 1)
+      this.respondToReadyState(this.transport.readyState);
+  },
+
   setRequestHeaders: function() {
-    var requestHeaders =
-      ['X-Requested-With', 'XMLHttpRequest',
-       'X-Prototype-Version', Prototype.Version];
+    var headers = {
+      'X-Requested-With': 'XMLHttpRequest',
+      'X-Prototype-Version': Prototype.Version,
+      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
+    };
 
     if (this.options.method == 'post') {
-      requestHeaders.push('Content-type',
-        'application/x-www-form-urlencoded');
+      headers['Content-type'] = this.options.contentType +
+        (this.options.encoding ? '; charset=' + this.options.encoding : '');
 
-      /* Force "Connection: close" for Mozilla browsers to work around
-       * a bug where XMLHttpReqeuest sends an incorrect Content-length
-       * header. See Mozilla Bugzilla #246651.
+      /* Force "Connection: close" for older Mozilla browsers to work
+       * around a bug where XMLHttpRequest sends an incorrect
+       * Content-length header. See Mozilla Bugzilla #246651.
        */
-      if (this.transport.overrideMimeType)
-        requestHeaders.push('Connection', 'close');
+      if (this.transport.overrideMimeType &&
+          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
+            headers['Connection'] = 'close';
     }
 
-    if (this.options.requestHeaders)
-      requestHeaders.push.apply(requestHeaders, this.options.requestHeaders);
+    // user-defined headers
+    if (typeof this.options.requestHeaders == 'object') {
+      var extras = this.options.requestHeaders;
 
-    for (var i = 0; i < requestHeaders.length; i += 2)
-      this.transport.setRequestHeader(requestHeaders[i], requestHeaders[i+1]);
-  },
-
-  onStateChange: function() {
-    var readyState = this.transport.readyState;
-    if (readyState != 1)
-      this.respondToReadyState(this.transport.readyState);
-  },
-
-  header: function(name) {
-    try {
-      return this.transport.getResponseHeader(name);
-    } catch (e) {}
-  },
+      if (typeof extras.push == 'function')
+        for (var i = 0; i < extras.length; i += 2)
+          headers[extras[i]] = extras[i+1];
+      else
+        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
+    }
 
-  evalJSON: function() {
-    try {
-      return eval(this.header('X-JSON'));
-    } catch (e) {}
+    for (var name in headers)
+      this.transport.setRequestHeader(name, headers[name]);
   },
 
-  evalResponse: function() {
-    try {
-      return eval(this.transport.responseText);
-    } catch (e) {
-      this.dispatchException(e);
-    }
+  success: function() {
+    return !this.transport.status
+        || (this.transport.status >= 200 && this.transport.status < 300);
   },
 
   respondToReadyState: function(readyState) {
-    var event = Ajax.Request.Events[readyState];
+    var state = Ajax.Request.Events[readyState];
     var transport = this.transport, json = this.evalJSON();
 
-    if (event == 'Complete') {
+    if (state == 'Complete') {
       try {
         (this.options['on' + this.transport.status]
-         || this.options['on' + (this.responseIsSuccess() ? 'Success' : 'Failure')]
+         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
          || Prototype.emptyFunction)(transport, json);
       } catch (e) {
         this.dispatchException(e);
       }
-
-      if ((this.header('Content-type') || '').match(/^text\/javascript/i))
-        this.evalResponse();
     }
 
     try {
-      (this.options['on' + event] || Prototype.emptyFunction)(transport, json);
-      Ajax.Responders.dispatch('on' + event, this, transport, json);
+      (this.options['on' + state] || Prototype.emptyFunction)(transport, json);
+      Ajax.Responders.dispatch('on' + state, this, transport, json);
     } catch (e) {
       this.dispatchException(e);
     }
 
-    /* Avoid memory leak in MSIE: clean up the oncomplete event handler */
-    if (event == 'Complete')
+    if (state == 'Complete') {
+      if ((this.getHeader('Content-type') || '').strip().
+        match(/^(text|application)\/(x-)?(java|ecma)script(;.*)?$/i))
+          this.evalResponse();
+
+      // avoid memory leak in MSIE: clean up
       this.transport.onreadystatechange = Prototype.emptyFunction;
+    }
+  },
+
+  getHeader: function(name) {
+    try {
+      return this.transport.getResponseHeader(name);
+    } catch (e) { return null }
+  },
+
+  evalJSON: function() {
+    try {
+      var json = this.getHeader('X-JSON');
+      return json ? eval('(' + json + ')') : null;
+    } catch (e) { return null }
+  },
+
+  evalResponse: function() {
+    try {
+      return eval(this.transport.responseText);
+    } catch (e) {
+      this.dispatchException(e);
+    }
   },
 
   dispatchException: function(exception) {
@@ -748,41 +882,37 @@ Ajax.Updater = Class.create();
 
 Object.extend(Object.extend(Ajax.Updater.prototype, Ajax.Request.prototype), {
   initialize: function(container, url, options) {
-    this.containers = {
-      success: container.success ? $(container.success) : $(container),
-      failure: container.failure ? $(container.failure) :
-        (container.success ? null : $(container))
+    this.container = {
+      success: (container.success || container),
+      failure: (container.failure || (container.success ? null : container))
     }
 
     this.transport = Ajax.getTransport();
     this.setOptions(options);
 
     var onComplete = this.options.onComplete || Prototype.emptyFunction;
-    this.options.onComplete = (function(transport, object) {
+    this.options.onComplete = (function(transport, param) {
       this.updateContent();
-      onComplete(transport, object);
+      onComplete(transport, param);
     }).bind(this);
 
     this.request(url);
   },
 
   updateContent: function() {
-    var receiver = this.responseIsSuccess() ?
-      this.containers.success : this.containers.failure;
+    var receiver = this.container[this.success() ? 'success' : 'failure'];
     var response = this.transport.responseText;
 
-    if (!this.options.evalScripts)
-      response = response.stripScripts();
+    if (!this.options.evalScripts) response = response.stripScripts();
 
-    if (receiver) {
-      if (this.options.insertion) {
+    if (receiver = $(receiver)) {
+      if (this.options.insertion)
         new this.options.insertion(receiver, response);
-      } else {
-        Element.update(receiver, response);
-      }
+      else
+        receiver.update(response);
     }
 
-    if (this.responseIsSuccess()) {
+    if (this.success()) {
       if (this.onComplete)
         setTimeout(this.onComplete.bind(this), 10);
     }
@@ -811,7 +941,7 @@ Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {
   },
 
   stop: function() {
-    this.updater.onComplete = undefined;
+    this.updater.options.onComplete = undefined;
     clearTimeout(this.timer);
     (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
   },
@@ -831,55 +961,208 @@ Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {
     this.updater = new Ajax.Updater(this.container, this.url, this.options);
   }
 });
+function $(element) {
+  if (arguments.length > 1) {
+    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
+      elements.push($(arguments[i]));
+    return elements;
+  }
+  if (typeof element == 'string')
+    element = document.getElementById(element);
+  return Element.extend(element);
+}
+
+if (Prototype.BrowserFeatures.XPath) {
+  document._getElementsByXPath = function(expression, parentElement) {
+    var results = [];
+    var query = document.evaluate(expression, $(parentElement) || document,
+      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
+    for (var i = 0, len = query.snapshotLength; i < len; i++)
+      results.push(query.snapshotItem(i));
+    return results;
+  }
+}
+
 document.getElementsByClassName = function(className, parentElement) {
-  var children = ($(parentElement) || document.body).getElementsByTagName('*');
-  return $A(children).inject([], function(elements, child) {
-    if (child.className.match(new RegExp("(^|\\s)" + className + "(\\s|$)")))
-      elements.push(child);
+  if (Prototype.BrowserFeatures.XPath) {
+    var q = ".//*[contains(concat(' ', @class, ' '), ' " + className + " ')]";
+    return document._getElementsByXPath(q, parentElement);
+  } else {
+    var children = ($(parentElement) || document.body).getElementsByTagName('*');
+    var elements = [], child;
+    for (var i = 0, length = children.length; i < length; i++) {
+      child = children[i];
+      if (Element.hasClassName(child, className))
+        elements.push(Element.extend(child));
+    }
     return elements;
-  });
+  }
 }
 
 /*--------------------------------------------------------------------------*/
 
-if (!window.Element) {
+if (!window.Element)
   var Element = new Object();
+
+Element.extend = function(element) {
+  if (!element) return;
+  if (_nativeExtensions || element.nodeType == 3) return element;
+
+  if (!element._extended && element.tagName && element != window) {
+    var methods = Object.clone(Element.Methods), cache = Element.extend.cache;
+
+    if (element.tagName == 'FORM')
+      Object.extend(methods, Form.Methods);
+    if (['INPUT', 'TEXTAREA', 'SELECT'].include(element.tagName))
+      Object.extend(methods, Form.Element.Methods);
+
+    for (var property in methods) {
+      var value = methods[property];
+      if (typeof value == 'function')
+        element[property] = cache.findOrStore(value);
+    }
+
+    var methods = Object.clone(Element.Methods.Simulated), cache = Element.extend.cache;
+    for (var property in methods) {
+      var value = methods[property];
+      if ('function' == typeof value && !(property in element))
+        element[property] = cache.findOrStore(value);
+    }
+  }
+
+  element._extended = true;
+  return element;
 }
 
-Object.extend(Element, {
+Element.extend.cache = {
+  findOrStore: function(value) {
+    return this[value] = this[value] || function() {
+      return value.apply(null, [this].concat($A(arguments)));
+    }
+  }
+}
+
+Element.Methods = {
   visible: function(element) {
     return $(element).style.display != 'none';
   },
 
-  toggle: function() {
-    for (var i = 0; i < arguments.length; i++) {
-      var element = $(arguments[i]);
-      Element[Element.visible(element) ? 'hide' : 'show'](element);
-    }
+  toggle: function(element) {
+    element = $(element);
+    Element[Element.visible(element) ? 'hide' : 'show'](element);
+    return element;
   },
 
-  hide: function() {
-    for (var i = 0; i < arguments.length; i++) {
-      var element = $(arguments[i]);
-      element.style.display = 'none';
-    }
+  hide: function(element) {
+    $(element).style.display = 'none';
+    return element;
   },
 
-  show: function() {
-    for (var i = 0; i < arguments.length; i++) {
-      var element = $(arguments[i]);
-      element.style.display = '';
-    }
+  show: function(element) {
+    $(element).style.display = '';
+    return element;
   },
 
   remove: function(element) {
     element = $(element);
     element.parentNode.removeChild(element);
+    return element;
   },
 
   update: function(element, html) {
+    html = typeof html == 'undefined' ? '' : html.toString();
     $(element).innerHTML = html.stripScripts();
     setTimeout(function() {html.evalScripts()}, 10);
+    return element;
+  },
+
+  replace: function(element, html) {
+    element = $(element);
+    if (element.outerHTML) {
+      element.outerHTML = html.stripScripts();
+    } else {
+      var range = element.ownerDocument.createRange();
+      range.selectNodeContents(element);
+      element.parentNode.replaceChild(
+        range.createContextualFragment(html.stripScripts()), element);
+    }
+    setTimeout(function() {html.evalScripts()}, 10);
+    return element;
+  },
+
+  inspect: function(element) {
+    element = $(element);
+    var result = '<' + element.tagName.toLowerCase();
+    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
+      var property = pair.first(), attribute = pair.last();
+      var value = (element[property] || '').toString();
+      if (value) result += ' ' + attribute + '=' + value.inspect(true);
+    });
+    return result + '>';
+  },
+
+  recursivelyCollect: function(element, property) {
+    element = $(element);
+    var elements = [];
+    while (element = element[property])
+      if (element.nodeType == 1)
+        elements.push(Element.extend(element));
+    return elements;
+  },
+
+  ancestors: function(element) {
+    return $(element).recursivelyCollect('parentNode');
+  },
+
+  descendants: function(element) {
+    element = $(element);
+    return $A(element.getElementsByTagName('*'));
+  },
+
+  previousSiblings: function(element) {
+    return $(element).recursivelyCollect('previousSibling');
+  },
+
+  nextSiblings: function(element) {
+    return $(element).recursivelyCollect('nextSibling');
+  },
+
+  siblings: function(element) {
+    element = $(element);
+    return element.previousSiblings().reverse().concat(element.nextSiblings());
+  },
+
+  match: function(element, selector) {
+    element = $(element);
+    if (typeof selector == 'string')
+      selector = new Selector(selector);
+    return selector.match(element);
+  },
+
+  up: function(element, expression, index) {
+    return Selector.findElement($(element).ancestors(), expression, index);
+  },
+
+  down: function(element, expression, index) {
+    return Selector.findElement($(element).descendants(), expression, index);
+  },
+
+  previous: function(element, expression, index) {
+    return Selector.findElement($(element).previousSiblings(), expression, index);
+  },
+
+  next: function(element, expression, index) {
+    return Selector.findElement($(element).nextSiblings(), expression, index);
+  },
+
+  getElementsBySelector: function() {
+    var args = $A(arguments), element = $(args.shift());
+    return Selector.findChildElements(element, args);
+  },
+
+  getElementsByClassName: function(element, className) {
+    element = $(element);
+    return document.getElementsByClassName(className, element);
   },
 
   getHeight: function(element) {
@@ -893,38 +1176,66 @@ Object.extend(Element, {
 
   hasClassName: function(element, className) {
     if (!(element = $(element))) return;
-    return Element.classNames(element).include(className);
+    var elementClassName = element.className;
+    if (elementClassName.length == 0) return false;
+    if (elementClassName == className ||
+        elementClassName.match(new RegExp("(^|\\s)" + className + "(\\s|$)")))
+      return true;
+    return false;
   },
 
   addClassName: function(element, className) {
     if (!(element = $(element))) return;
-    return Element.classNames(element).add(className);
+    Element.classNames(element).add(className);
+    return element;
   },
 
   removeClassName: function(element, className) {
     if (!(element = $(element))) return;
-    return Element.classNames(element).remove(className);
+    Element.classNames(element).remove(className);
+    return element;
+  },
+
+  observe: function() {
+    Event.observe.apply(Event, arguments);
+    return $A(arguments).first();
+  },
+
+  stopObserving: function() {
+    Event.stopObserving.apply(Event, arguments);
+    return $A(arguments).first();
   },
 
   // removes whitespace-only text node children
   cleanWhitespace: function(element) {
     element = $(element);
-    for (var i = 0; i < element.childNodes.length; i++) {
-      var node = element.childNodes[i];
+    var node = element.firstChild;
+    while (node) {
+      var nextNode = node.nextSibling;
       if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
-        Element.remove(node);
+        element.removeChild(node);
+      node = nextNode;
     }
+    return element;
   },
 
   empty: function(element) {
     return $(element).innerHTML.match(/^\s*$/);
   },
 
+  childOf: function(element, ancestor) {
+    element = $(element), ancestor = $(ancestor);
+    while (element = element.parentNode)
+      if (element == ancestor) return true;
+    return false;
+  },
+
   scrollTo: function(element) {
     element = $(element);
     var x = element.x ? element.x : element.offsetLeft,
         y = element.y ? element.y : element.offsetTop;
     window.scrollTo(x, y);
+    return element;
   },
 
   getStyle: function(element, style) {
@@ -947,8 +1258,9 @@ Object.extend(Element, {
 
   setStyle: function(element, style) {
     element = $(element);
-    for (name in style)
+    for (var name in style)
       element.style[name.camelize()] = style[name];
+    return element;
   },
 
   getDimensions: function(element) {
@@ -985,6 +1297,7 @@ Object.extend(Element, {
         element.style.left = 0;
       }
     }
+    return element;
   },
 
   undoPositioned: function(element) {
@@ -997,23 +1310,105 @@ Object.extend(Element, {
         element.style.bottom =
         element.style.right = '';
     }
+    return element;
   },
 
   makeClipping: function(element) {
     element = $(element);
-    if (element._overflow) return;
-    element._overflow = element.style.overflow;
+    if (element._overflow) return element;
+    element._overflow = element.style.overflow || 'auto';
     if ((Element.getStyle(element, 'overflow') || 'visible') != 'hidden')
       element.style.overflow = 'hidden';
+    return element;
   },
 
   undoClipping: function(element) {
     element = $(element);
-    if (element._overflow) return;
-    element.style.overflow = element._overflow;
-    element._overflow = undefined;
+    if (!element._overflow) return element;
+    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
+    element._overflow = null;
+    return element;
   }
-});
+}
+
+Element.Methods.Simulated = {
+  hasAttribute: function(element, attribute) {
+    return $(element).getAttributeNode(attribute).specified;
+  }
+}
+
+// IE is missing .innerHTML support for TABLE-related elements
+if(document.all){
+  Element.Methods.update = function(element, html) {
+    element = $(element);
+    html = typeof html == 'undefined' ? '' : html.toString();
+    var tagName = element.tagName.toUpperCase();
+    if (['THEAD','TBODY','TR','TD'].indexOf(tagName) > -1) {
+      var div = document.createElement('div');
+      switch (tagName) {
+        case 'THEAD':
+        case 'TBODY':
+          div.innerHTML = '<table><tbody>' +  html.stripScripts() + '</tbody></table>';
+          depth = 2;
+          break;
+        case 'TR':
+          div.innerHTML = '<table><tbody><tr>' +  html.stripScripts() + '</tr></tbody></table>';
+          depth = 3;
+          break;
+        case 'TD':
+          div.innerHTML = '<table><tbody><tr><td>' +  html.stripScripts() + '</td></tr></tbody></table>';
+          depth = 4;
+      }
+      $A(element.childNodes).each(function(node){
+        element.removeChild(node)
+      });
+      depth.times(function(){ div = div.firstChild });
+
+      $A(div.childNodes).each(
+        function(node){ element.appendChild(node) });
+    } else {
+      element.innerHTML = html.stripScripts();
+    }
+    setTimeout(function() {html.evalScripts()}, 10);
+    return element;
+  }
+}
+
+Object.extend(Element, Element.Methods);
+
+var _nativeExtensions = false;
+
+if(/Konqueror|Safari|KHTML/.test(navigator.userAgent))
+  ['', 'Form', 'Input', 'TextArea', 'Select'].each(function(tag) {
+    var className = 'HTML' + tag + 'Element';
+    if(window[className]) return;
+    var klass = window[className] = {};
+    klass.prototype = document.createElement(tag ? tag.toLowerCase() : 'div').__proto__;
+  });
+
+Element.addMethods = function(methods) {
+  Object.extend(Element.Methods, methods || {});
+
+  function copy(methods, destination, onlyIfAbsent) {
+    onlyIfAbsent = onlyIfAbsent || false;
+    var cache = Element.extend.cache;
+    for (var property in methods) {
+      var value = methods[property];
+      if (!onlyIfAbsent || !(property in destination))
+        destination[property] = cache.findOrStore(value);
+    }
+  }
+
+  if (typeof HTMLElement != 'undefined') {
+    copy(Element.Methods, HTMLElement.prototype);
+    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
+    copy(Form.Methods, HTMLFormElement.prototype);
+    [HTMLInputElement, HTMLTextAreaElement, HTMLSelectElement].each(function(klass) {
+      copy(Form.Element.Methods, klass.prototype);
+    });
+    _nativeExtensions = true;
+  }
+}
 
 var Toggle = new Object();
 Toggle.display = Element.toggle;
@@ -1033,7 +1428,8 @@ Abstract.Insertion.prototype = {
       try {
         this.element.insertAdjacentHTML(this.adjacency, this.content);
       } catch (e) {
-        if (this.element.tagName.toLowerCase() == 'tbody') {
+        var tagName = this.element.tagName.toLowerCase();
+        if (tagName == 'tbody' || tagName == 'tr') {
           this.insertContent(this.contentFromAnonymousTable());
         } else {
           throw e;
@@ -1132,76 +1528,176 @@ Element.ClassNames.prototype = {
 
   add: function(classNameToAdd) {
     if (this.include(classNameToAdd)) return;
-    this.set(this.toArray().concat(classNameToAdd).join(' '));
+    this.set($A(this).concat(classNameToAdd).join(' '));
   },
 
   remove: function(classNameToRemove) {
     if (!this.include(classNameToRemove)) return;
-    this.set(this.select(function(className) {
-      return className != classNameToRemove;
-    }).join(' '));
+    this.set($A(this).without(classNameToRemove).join(' '));
   },
 
   toString: function() {
-    return this.toArray().join(' ');
+    return $A(this).join(' ');
   }
 }
 
 Object.extend(Element.ClassNames.prototype, Enumerable);
-var Field = {
-  clear: function() {
-    for (var i = 0; i < arguments.length; i++)
-      $(arguments[i]).value = '';
+var Selector = Class.create();
+Selector.prototype = {
+  initialize: function(expression) {
+    this.params = {classNames: []};
+    this.expression = expression.toString().strip();
+    this.parseExpression();
+    this.compileMatcher();
   },
 
-  focus: function(element) {
-    $(element).focus();
+  parseExpression: function() {
+    function abort(message) { throw 'Parse error in selector: ' + message; }
+
+    if (this.expression == '')  abort('empty expression');
+
+    var params = this.params, expr = this.expression, match, modifier, clause, rest;
+    while (match = expr.match(/^(.*)\[([a-z0-9_:-]+?)(?:([~\|!]?=)(?:"([^"]*)"|([^\]\s]*)))?\]$/i)) {
+      params.attributes = params.attributes || [];
+      params.attributes.push({name: match[2], operator: match[3], value: match[4] || match[5] || ''});
+      expr = match[1];
+    }
+
+    if (expr == '*') return this.params.wildcard = true;
+
+    while (match = expr.match(/^([^a-z0-9_-])?([a-z0-9_-]+)(.*)/i)) {
+      modifier = match[1], clause = match[2], rest = match[3];
+      switch (modifier) {
+        case '#':       params.id = clause; break;
+        case '.':       params.classNames.push(clause); break;
+        case '':
+        case undefined: params.tagName = clause.toUpperCase(); break;
+        default:        abort(expr.inspect());
+      }
+      expr = rest;
+    }
+
+    if (expr.length > 0) abort(expr.inspect());
+  },
+
+  buildMatchExpression: function() {
+    var params = this.params, conditions = [], clause;
+
+    if (params.wildcard)
+      conditions.push('true');
+    if (clause = params.id)
+      conditions.push('element.id == ' + clause.inspect());
+    if (clause = params.tagName)
+      conditions.push('element.tagName.toUpperCase() == ' + clause.inspect());
+    if ((clause = params.classNames).length > 0)
+      for (var i = 0; i < clause.length; i++)
+        conditions.push('Element.hasClassName(element, ' + clause[i].inspect() + ')');
+    if (clause = params.attributes) {
+      clause.each(function(attribute) {
+        var value = 'element.getAttribute(' + attribute.name.inspect() + ')';
+        var splitValueBy = function(delimiter) {
+          return value + ' && ' + value + '.split(' + delimiter.inspect() + ')';
+        }
+
+        switch (attribute.operator) {
+          case '=':       conditions.push(value + ' == ' + attribute.value.inspect()); break;
+          case '~=':      conditions.push(splitValueBy(' ') + '.include(' + attribute.value.inspect() + ')'); break;
+          case '|=':      conditions.push(
+                            splitValueBy('-') + '.first().toUpperCase() == ' + attribute.value.toUpperCase().inspect()
+                          ); break;
+          case '!=':      conditions.push(value + ' != ' + attribute.value.inspect()); break;
+          case '':
+          case undefined: conditions.push(value + ' != null'); break;
+          default:        throw 'Unknown operator ' + attribute.operator + ' in selector';
+        }
+      });
+    }
+
+    return conditions.join(' && ');
   },
 
-  present: function() {
-    for (var i = 0; i < arguments.length; i++)
-      if ($(arguments[i]).value == '') return false;
-    return true;
+  compileMatcher: function() {
+    this.match = new Function('element', 'if (!element.tagName) return false; \
+      return ' + this.buildMatchExpression());
   },
 
-  select: function(element) {
-    $(element).select();
+  findElements: function(scope) {
+    var element;
+
+    if (element = $(this.params.id))
+      if (this.match(element))
+        if (!scope || Element.childOf(element, scope))
+          return [element];
+
+    scope = (scope || document).getElementsByTagName(this.params.tagName || '*');
+
+    var results = [];
+    for (var i = 0, length = scope.length; i < length; i++)
+      if (this.match(element = scope[i]))
+        results.push(Element.extend(element));
+
+    return results;
   },
 
-  activate: function(element) {
-    element = $(element);
-    element.focus();
-    if (element.select)
-      element.select();
+  toString: function() {
+    return this.expression;
   }
 }
 
-/*--------------------------------------------------------------------------*/
+Object.extend(Selector, {
+  matchElements: function(elements, expression) {
+    var selector = new Selector(expression);
+    return elements.select(selector.match.bind(selector)).collect(Element.extend);
+  },
 
+  findElement: function(elements, expression, index) {
+    if (typeof expression == 'number') index = expression, expression = false;
+    return Selector.matchElements(elements, expression || '*')[index || 0];
+  },
+
+  findChildElements: function(element, expressions) {
+    return expressions.map(function(expression) {
+      return expression.strip().split(/\s+/).inject([null], function(results, expr) {
+        var selector = new Selector(expr);
+        return results.inject([], function(elements, result) {
+          return elements.concat(selector.findElements(result || element));
+        });
+      });
+    }).flatten();
+  }
+});
+
+function $$() {
+  return Selector.findChildElements(document, $A(arguments));
+}
 var Form = {
-  serialize: function(form) {
-    var elements = Form.getElements($(form));
-    var queryComponents = new Array();
+  reset: function(form) {
+    $(form).reset();
+    return form;
+  },
 
-    for (var i = 0; i < elements.length; i++) {
-      var queryComponent = Form.Element.serialize(elements[i]);
-      if (queryComponent)
-        queryComponents.push(queryComponent);
-    }
+  serializeElements: function(elements) {
+    return elements.inject([], function(queryComponents, element) {
+      var queryComponent = Form.Element.serialize(element);
+      if (queryComponent) queryComponents.push(queryComponent);
+      return queryComponents;
+    }).join('&');
+  }
+};
 
-    return queryComponents.join('&');
+Form.Methods = {
+  serialize: function(form) {
+    return Form.serializeElements($(form).getElements());
   },
 
   getElements: function(form) {
-    form = $(form);
-    var elements = new Array();
-
-    for (tagName in Form.Element.Serializers) {
-      var tagElements = form.getElementsByTagName(tagName);
-      for (var j = 0; j < tagElements.length; j++)
-        elements.push(tagElements[j]);
-    }
-    return elements;
+    return $A($(form).getElementsByTagName('*')).inject([],
+      function(elements, child) {
+        if (Form.Element.Serializers[child.tagName.toLowerCase()])
+          elements.push(Element.extend(child));
+        return elements;
+      }
+    );
   },
 
   getInputs: function(form, typeName, name) {
@@ -1212,53 +1708,68 @@ var Form = {
       return inputs;
 
     var matchingInputs = new Array();
-    for (var i = 0; i < inputs.length; i++) {
+    for (var i = 0, length = inputs.length; i < length; i++) {
       var input = inputs[i];
       if ((typeName && input.type != typeName) ||
           (name && input.name != name))
         continue;
-      matchingInputs.push(input);
+      matchingInputs.push(Element.extend(input));
     }
 
     return matchingInputs;
   },
 
   disable: function(form) {
-    var elements = Form.getElements(form);
-    for (var i = 0; i < elements.length; i++) {
-      var element = elements[i];
+    form = $(form);
+    form.getElements().each(function(element) {
       element.blur();
       element.disabled = 'true';
-    }
+    });
+    return form;
   },
 
   enable: function(form) {
-    var elements = Form.getElements(form);
-    for (var i = 0; i < elements.length; i++) {
-      var element = elements[i];
+    form = $(form);
+    form.getElements().each(function(element) {
       element.disabled = '';
-    }
+    });
+    return form;
   },
 
   findFirstElement: function(form) {
-    return Form.getElements(form).find(function(element) {
+    return $(form).getElements().find(function(element) {
       return element.type != 'hidden' && !element.disabled &&
         ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
     });
   },
 
   focusFirstElement: function(form) {
-    Field.activate(Form.findFirstElement(form));
+    form = $(form);
+    form.findFirstElement().activate();
+    return form;
+  }
+}
+
+Object.extend(Form, Form.Methods);
+
+/*--------------------------------------------------------------------------*/
+
+Form.Element = {
+  focus: function(element) {
+    $(element).focus();
+    return element;
   },
 
-  reset: function(form) {
-    $(form).reset();
+  select: function(element) {
+    $(element).select();
+    return element;
   }
 }
 
-Form.Element = {
+Form.Element.Methods = {
   serialize: function(element) {
     element = $(element);
+    if (element.disabled) return '';
     var method = element.tagName.toLowerCase();
     var parameter = Form.Element.Serializers[method](element);
 
@@ -1282,20 +1793,52 @@ Form.Element = {
 
     if (parameter)
       return parameter[1];
+  },
+
+  clear: function(element) {
+    $(element).value = '';
+    return element;
+  },
+
+  present: function(element) {
+    return $(element).value != '';
+  },
+
+  activate: function(element) {
+    element = $(element);
+    element.focus();
+    if (element.select)
+      element.select();
+    return element;
+  },
+
+  disable: function(element) {
+    element = $(element);
+    element.disabled = true;
+    return element;
+  },
+
+  enable: function(element) {
+    element = $(element);
+    element.blur();
+    element.disabled = false;
+    return element;
   }
 }
 
+Object.extend(Form.Element, Form.Element.Methods);
+var Field = Form.Element;
+
+/*--------------------------------------------------------------------------*/
+
 Form.Element.Serializers = {
   input: function(element) {
     switch (element.type.toLowerCase()) {
-      case 'submit':
-      case 'hidden':
-      case 'password':
-      case 'text':
-        return Form.Element.Serializers.textarea(element);
       case 'checkbox':
       case 'radio':
         return Form.Element.Serializers.inputSelector(element);
+      default:
+        return Form.Element.Serializers.textarea(element);
     }
     return false;
   },
@@ -1317,24 +1860,20 @@ Form.Element.Serializers = {
   selectOne: function(element) {
     var value = '', opt, index = element.selectedIndex;
     if (index >= 0) {
-      opt = element.options[index];
-      value = opt.value;
-      if (!value && !('value' in opt))
-        value = opt.text;
+      opt = Element.extend(element.options[index]);
+      // Uses the new potential extension if hasAttribute isn't native.
+      value = opt.hasAttribute('value') ? opt.value : opt.text;
     }
     return [element.name, value];
   },
 
   selectMany: function(element) {
-    var value = new Array();
+    var value = [];
     for (var i = 0; i < element.length; i++) {
-      var opt = element.options[i];
-      if (opt.selected) {
-        var optValue = opt.value;
-        if (!optValue && !('value' in opt))
-          optValue = opt.text;
-        value.push(optValue);
-      }
+      var opt = Element.extend(element.options[i]);
+      if (opt.selected)
+        // Uses the new potential extension if hasAttribute isn't native.
+        value.push(opt.hasAttribute('value') ? opt.value : opt.text);
     }
     return [element.name, value];
   }
@@ -1408,9 +1947,7 @@ Abstract.EventObserver.prototype = {
   },
 
   registerFormCallbacks: function() {
-    var elements = Form.getElements(this.element);
-    for (var i = 0; i < elements.length; i++)
-      this.registerCallback(elements[i]);
+    Form.getElements(this.element).each(this.registerCallback.bind(this));
   },
 
   registerCallback: function(element) {
@@ -1420,11 +1957,7 @@ Abstract.EventObserver.prototype = {
         case 'radio':
           Event.observe(element, 'click', this.onElementEvent.bind(this));
           break;
-        case 'password':
-        case 'text':
-        case 'textarea':
-        case 'select-one':
-        case 'select-multiple':
+        default:
           Event.observe(element, 'change', this.onElementEvent.bind(this));
           break;
       }
@@ -1459,6 +1992,10 @@ Object.extend(Event, {
   KEY_RIGHT:    39,
   KEY_DOWN:     40,
   KEY_DELETE:   46,
+  KEY_HOME:     36,
+  KEY_END:      35,
+  KEY_PAGEUP:   33,
+  KEY_PAGEDOWN: 34,
 
   element: function(event) {
     return event.target || event.srcElement;
@@ -1514,7 +2051,7 @@ Object.extend(Event, {
 
   unloadCache: function() {
     if (!Event.observers) return;
-    for (var i = 0; i < Event.observers.length; i++) {
+    for (var i = 0, length = Event.observers.length; i < length; i++) {
       Event.stopObserving.apply(this, Event.observers[i]);
       Event.observers[i][0] = null;
     }
@@ -1522,7 +2059,7 @@ Object.extend(Event, {
   },
 
   observe: function(element, name, observer, useCapture) {
-    var element = $(element);
+    element = $(element);
     useCapture = useCapture || false;
 
     if (name == 'keypress' &&
@@ -1530,11 +2067,11 @@ Object.extend(Event, {
         || element.attachEvent))
       name = 'keydown';
 
-    this._observeAndCache(element, name, observer, useCapture);
+    Event._observeAndCache(element, name, observer, useCapture);
   },
 
   stopObserving: function(element, name, observer, useCapture) {
-    var element = $(element);
+    element = $(element);
     useCapture = useCapture || false;
 
     if (name == 'keypress' &&
@@ -1545,13 +2082,16 @@ Object.extend(Event, {
     if (element.removeEventListener) {
       element.removeEventListener(name, observer, useCapture);
     } else if (element.detachEvent) {
-      element.detachEvent('on' + name, observer);
+      try {
+        element.detachEvent('on' + name, observer);
+      } catch (e) {}
     }
   }
 });
 
 /* prevent memory leaks in IE */
-Event.observe(window, 'unload', Event.unloadCache, false);
+if (navigator.appVersion.match(/\bMSIE\b/))
+  Event.observe(window, 'unload', Event.unloadCache, false);
 var Position = {
   // set to true if needed, warning: firefox performance problems
   // NOT neeeded for page scrolling, only if draggable contained in
@@ -1598,7 +2138,8 @@ var Position = {
       valueL += element.offsetLeft || 0;
       element = element.offsetParent;
       if (element) {
-        p = Element.getStyle(element, 'position');
+        if(element.tagName=='BODY') break;
+        var p = Element.getStyle(element, 'position');
         if (p == 'relative' || p == 'absolute') break;
       }
     } while (element);
@@ -1654,17 +2195,6 @@ var Position = {
         element.offsetWidth;
   },
 
-  clone: function(source, target) {
-    source = $(source);
-    target = $(target);
-    target.style.position = 'absolute';
-    var offsets = this.cumulativeOffset(source);
-    target.style.top    = offsets[1] + 'px';
-    target.style.left   = offsets[0] + 'px';
-    target.style.width  = source.offsetWidth + 'px';
-    target.style.height = source.offsetHeight + 'px';
-  },
-
   page: function(forElement) {
     var valueT = 0, valueL = 0;
 
@@ -1681,8 +2211,10 @@ var Position = {
 
     element = forElement;
     do {
-      valueT -= element.scrollTop  || 0;
-      valueL -= element.scrollLeft || 0;
+      if (!window.opera || element.tagName=='BODY') {
+        valueT -= element.scrollTop  || 0;
+        valueL -= element.scrollLeft || 0;
+      }
     } while (element = element.parentNode);
 
     return [valueL, valueT];
@@ -1782,4 +2314,6 @@ if (/Konqueror|Safari|KHTML/.test(navigator.userAgent)) {
 
     return [valueL, valueT];
   }
-}
\ No newline at end of file
+}
+
+Element.addMethods();
\ No newline at end of file
diff --git a/public/stylesheets/application.css b/public/stylesheets/application.css
index 0a3a3f400..afe4eefd2 100644
--- a/public/stylesheets/application.css
+++ b/public/stylesheets/application.css
@@ -215,6 +215,30 @@ font-family: Trebuchet MS,Georgia,"Times New Roman",serif;
 #content dt{font-weight:bold; margin-bottom:5px;}

 #content dd{margin:0 0 10px 15px;}

 

+#content .tabs{height: 2.6em;}

+#content .tabs ul{margin:0;}

+#content .tabs ul li{

+float:left;

+list-style-type:none;

+white-space:nowrap;

+margin-right:8px;

+background:#fff;

+}

+#content .tabs ul li a{

+display:block;

+font-size: 0.9em;

+text-decoration:none;

+line-height:1em;

+padding:4px;

+border: 1px solid #c0c0c0;

+}

+

+#content .tabs ul li a.selected, #content .tabs ul li a:hover{

+background-color: #80b0da;

+border: 1px solid #80b0da;

+color: #fff;

+text-decoration:none;

+}

 

 /***********************************************/