From 2e72f2eca8f441a6ea89e71033837b9cd677d4a5 Mon Sep 17 00:00:00 2001
From: Jean-Philippe Lang <jp_lang@yahoo.fr>
Date: Mon, 5 Feb 2007 18:31:27 +0000
Subject: [PATCH] updated prototype (1.50) and script.aculo.us javascripts

git-svn-id: http://redmine.rubyforge.org/svn/trunk@241 e93f8b46-1217-0410-a6f0-8f06a7374b81
---
 public/javascripts/controls.js  | 189 +++++---
 public/javascripts/dragdrop.js  | 550 ++++++++++++++++++----
 public/javascripts/effects.js   | 800 +++++++++++++++++++++-----------
 public/javascripts/prototype.js | 558 ++++++++++++++--------
 4 files changed, 1484 insertions(+), 613 deletions(-)

diff --git a/public/javascripts/controls.js b/public/javascripts/controls.js
index 9742b6918..8c273f874 100644
--- a/public/javascripts/controls.js
+++ b/public/javascripts/controls.js
@@ -1,12 +1,13 @@
-// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
-//           (c) 2005 Ivan Krstic (http://blogs.law.harvard.edu/ivan)
-//           (c) 2005 Jon Tirsen (http://www.tirsen.com)
+// Copyright (c) 2005, 2006 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+//           (c) 2005, 2006 Ivan Krstic (http://blogs.law.harvard.edu/ivan)
+//           (c) 2005, 2006 Jon Tirsen (http://www.tirsen.com)
 // Contributors:
 //  Richard Livsey
 //  Rahul Bhargava
 //  Rob Wills
 // 
-// See scriptaculous.js for full license.
+// script.aculo.us is freely distributable under the terms of an MIT-style license.
+// For details, see the script.aculo.us web site: http://script.aculo.us/
 
 // Autocompleter.Base handles all the autocompletion functionality 
 // that's independent of the data source for autocompletion. This
@@ -33,6 +34,9 @@
 // useful when one of the tokens is \n (a newline), as it 
 // allows smart autocompletion after linebreaks.
 
+if(typeof Effect == 'undefined')
+  throw("controls.js requires including script.aculo.us' effects.js library");
+
 var Autocompleter = {}
 Autocompleter.Base = function() {};
 Autocompleter.Base.prototype = {
@@ -45,7 +49,7 @@ Autocompleter.Base.prototype = {
     this.index       = 0;     
     this.entryCount  = 0;
 
-    if (this.setOptions)
+    if(this.setOptions)
       this.setOptions(options);
     else
       this.options = options || {};
@@ -55,17 +59,20 @@ Autocompleter.Base.prototype = {
     this.options.frequency    = this.options.frequency || 0.4;
     this.options.minChars     = this.options.minChars || 1;
     this.options.onShow       = this.options.onShow || 
-    function(element, update){ 
-      if(!update.style.position || update.style.position=='absolute') {
-        update.style.position = 'absolute';
-        Position.clone(element, update, {setHeight: false, offsetTop: element.offsetHeight});
-      }
-      Effect.Appear(update,{duration:0.15});
-    };
+      function(element, update){ 
+        if(!update.style.position || update.style.position=='absolute') {
+          update.style.position = 'absolute';
+          Position.clone(element, update, {
+            setHeight: false, 
+            offsetTop: element.offsetHeight
+          });
+        }
+        Effect.Appear(update,{duration:0.15});
+      };
     this.options.onHide = this.options.onHide || 
-    function(element, update){ new Effect.Fade(update,{duration:0.15}) };
+      function(element, update){ new Effect.Fade(update,{duration:0.15}) };
 
-    if (typeof(this.options.tokens) == 'string') 
+    if(typeof(this.options.tokens) == 'string') 
       this.options.tokens = new Array(this.options.tokens);
 
     this.observer = null;
@@ -94,7 +101,7 @@ Autocompleter.Base.prototype = {
   },
   
   fixIEOverlapping: function() {
-    Position.clone(this.update, this.iefix);
+    Position.clone(this.update, this.iefix, {setTop:(!this.update.style.height)});
     this.iefix.style.zIndex = 1;
     this.update.style.zIndex = 2;
     Element.show(this.iefix);
@@ -141,8 +148,8 @@ Autocompleter.Base.prototype = {
          return;
       }
      else 
-      if(event.keyCode==Event.KEY_TAB || event.keyCode==Event.KEY_RETURN) 
-        return;
+       if(event.keyCode==Event.KEY_TAB || event.keyCode==Event.KEY_RETURN || 
+         (navigator.appVersion.indexOf('AppleWebKit') > 0 && event.keyCode == 0)) return;
 
     this.changed = true;
     this.hasFocus = true;
@@ -152,6 +159,12 @@ Autocompleter.Base.prototype = {
         setTimeout(this.onObserverEvent.bind(this), this.options.frequency*1000);
   },
 
+  activate: function() {
+    this.changed = false;
+    this.hasFocus = true;
+    this.getUpdatedChoices();
+  },
+
   onHover: function(event) {
     var element = Event.findElement(event, 'LI');
     if(this.index != element.autocompleteIndex) 
@@ -196,11 +209,13 @@ Autocompleter.Base.prototype = {
   markPrevious: function() {
     if(this.index > 0) this.index--
       else this.index = this.entryCount-1;
+    this.getEntry(this.index).scrollIntoView(true);
   },
   
   markNext: function() {
     if(this.index < this.entryCount-1) this.index++
       else this.index = 0;
+    this.getEntry(this.index).scrollIntoView(false);
   },
   
   getEntry: function(index) {
@@ -221,8 +236,13 @@ Autocompleter.Base.prototype = {
       this.options.updateElement(selectedElement);
       return;
     }
-
-    var value = Element.collectTextNodesIgnoreClass(selectedElement, 'informal');
+    var value = '';
+    if (this.options.select) {
+      var nodes = document.getElementsByClassName(this.options.select, selectedElement) || [];
+      if(nodes.length>0) value = Element.collectTextNodes(nodes[0], this.options.select);
+    } else
+      value = Element.collectTextNodesIgnoreClass(selectedElement, 'informal');
+    
     var lastTokenPos = this.findLastToken();
     if (lastTokenPos != -1) {
       var newValue = this.element.value.substr(0, lastTokenPos + 1);
@@ -243,11 +263,11 @@ Autocompleter.Base.prototype = {
     if(!this.changed && this.hasFocus) {
       this.update.innerHTML = choices;
       Element.cleanWhitespace(this.update);
-      Element.cleanWhitespace(this.update.firstChild);
+      Element.cleanWhitespace(this.update.down());
 
-      if(this.update.firstChild && this.update.firstChild.childNodes) {
+      if(this.update.firstChild && this.update.down().childNodes) {
         this.entryCount = 
-          this.update.firstChild.childNodes.length;
+          this.update.down().childNodes.length;
         for (var i = 0; i < this.entryCount; i++) {
           var entry = this.getEntry(i);
           entry.autocompleteIndex = i;
@@ -258,9 +278,14 @@ Autocompleter.Base.prototype = {
       }
 
       this.stopIndicator();
-
       this.index = 0;
-      this.render();
+      
+      if(this.entryCount==1 && this.options.autoSelect) {
+        this.selectEntry();
+        this.hide();
+      } else {
+        this.render();
+      }
     }
   },
 
@@ -305,7 +330,7 @@ Autocompleter.Base.prototype = {
 Ajax.Autocompleter = Class.create();
 Object.extend(Object.extend(Ajax.Autocompleter.prototype, Autocompleter.Base.prototype), {
   initialize: function(element, update, url, options) {
-	  this.baseInitialize(element, update, options);
+    this.baseInitialize(element, update, options);
     this.options.asynchronous  = true;
     this.options.onComplete    = this.onComplete.bind(this);
     this.options.defaultParams = this.options.parameters || null;
@@ -448,7 +473,10 @@ Ajax.InPlaceEditor.prototype = {
     this.element = $(element);
 
     this.options = Object.extend({
+      paramName: "value",
+      okButton: true,
       okText: "ok",
+      cancelLink: true,
       cancelText: "cancel",
       savingText: "Saving...",
       clickToEditText: "Click to edit",
@@ -470,8 +498,10 @@ Ajax.InPlaceEditor.prototype = {
       formClassName: 'inplaceeditor-form',
       highlightcolor: Ajax.InPlaceEditor.defaultHighlightColor,
       highlightendcolor: "#FFFFFF",
-      externalControl:	null,
-      ajaxOptions: {}
+      externalControl: null,
+      submitOnBlur: false,
+      ajaxOptions: {},
+      evalScripts: false
     }, options || {});
 
     if(!this.options.formId && this.element.id) {
@@ -516,7 +546,7 @@ Ajax.InPlaceEditor.prototype = {
     Element.hide(this.element);
     this.createForm();
     this.element.parentNode.insertBefore(this.form, this.element);
-    Field.scrollFreeActivate(this.editField);
+    if (!this.options.loadTextURL) Field.scrollFreeActivate(this.editField);
     // stop the event to avoid a page refresh in Safari
     if (evt) {
       Event.stop(evt);
@@ -536,16 +566,22 @@ Ajax.InPlaceEditor.prototype = {
       this.form.appendChild(br);
     }
 
-    okButton = document.createElement("input");
-    okButton.type = "submit";
-    okButton.value = this.options.okText;
-    this.form.appendChild(okButton);
+    if (this.options.okButton) {
+      okButton = document.createElement("input");
+      okButton.type = "submit";
+      okButton.value = this.options.okText;
+      okButton.className = 'editor_ok_button';
+      this.form.appendChild(okButton);
+    }
 
-    cancelLink = document.createElement("a");
-    cancelLink.href = "#";
-    cancelLink.appendChild(document.createTextNode(this.options.cancelText));
-    cancelLink.onclick = this.onclickCancel.bind(this);
-    this.form.appendChild(cancelLink);
+    if (this.options.cancelLink) {
+      cancelLink = document.createElement("a");
+      cancelLink.href = "#";
+      cancelLink.appendChild(document.createTextNode(this.options.cancelText));
+      cancelLink.onclick = this.onclickCancel.bind(this);
+      cancelLink.className = 'editor_cancel';      
+      this.form.appendChild(cancelLink);
+    }
   },
   hasHTMLLineBreaks: function(string) {
     if (!this.options.handleLineBreaks) return false;
@@ -561,24 +597,34 @@ Ajax.InPlaceEditor.prototype = {
     } else {
       text = this.getText();
     }
+
+    var obj = this;
     
     if (this.options.rows == 1 && !this.hasHTMLLineBreaks(text)) {
       this.options.textarea = false;
       var textField = document.createElement("input");
+      textField.obj = this;
       textField.type = "text";
-      textField.name = "value";
+      textField.name = this.options.paramName;
       textField.value = text;
       textField.style.backgroundColor = this.options.highlightcolor;
+      textField.className = 'editor_field';
       var size = this.options.size || this.options.cols || 0;
       if (size != 0) textField.size = size;
+      if (this.options.submitOnBlur)
+        textField.onblur = this.onSubmit.bind(this);
       this.editField = textField;
     } else {
       this.options.textarea = true;
       var textArea = document.createElement("textarea");
-      textArea.name = "value";
+      textArea.obj = this;
+      textArea.name = this.options.paramName;
       textArea.value = this.convertHTMLLineBreaks(text);
       textArea.rows = this.options.rows;
       textArea.cols = this.options.cols || 40;
+      textArea.className = 'editor_field';      
+      if (this.options.submitOnBlur)
+        textArea.onblur = this.onSubmit.bind(this);
       this.editField = textArea;
     }
     
@@ -605,6 +651,7 @@ Ajax.InPlaceEditor.prototype = {
     Element.removeClassName(this.form, this.options.loadingClassName);
     this.editField.disabled = false;
     this.editField.value = transport.responseText.stripTags();
+    Field.scrollFreeActivate(this.editField);
   },
   onclickCancel: function() {
     this.onComplete();
@@ -629,19 +676,26 @@ Ajax.InPlaceEditor.prototype = {
     // to be displayed indefinitely
     this.onLoading();
     
-    new Ajax.Updater(
-      { 
-        success: this.element,
-         // don't update on failure (this could be an option)
-        failure: null
-      },
-      this.url,
-      Object.extend({
-        parameters: this.options.callback(form, value),
-        onComplete: this.onComplete.bind(this),
-        onFailure: this.onFailure.bind(this)
-      }, this.options.ajaxOptions)
-    );
+    if (this.options.evalScripts) {
+      new Ajax.Request(
+        this.url, Object.extend({
+          parameters: this.options.callback(form, value),
+          onComplete: this.onComplete.bind(this),
+          onFailure: this.onFailure.bind(this),
+          asynchronous:true, 
+          evalScripts:true
+        }, this.options.ajaxOptions));
+    } else  {
+      new Ajax.Updater(
+        { success: this.element,
+          // don't update on failure (this could be an option)
+          failure: null }, 
+        this.url, Object.extend({
+          parameters: this.options.callback(form, value),
+          onComplete: this.onComplete.bind(this),
+          onFailure: this.onFailure.bind(this)
+        }, this.options.ajaxOptions));
+    }
     // stop the event to avoid a page refresh in Safari
     if (arguments.length > 1) {
       Event.stop(arguments[0]);
@@ -723,6 +777,35 @@ Ajax.InPlaceEditor.prototype = {
   }
 };
 
+Ajax.InPlaceCollectionEditor = Class.create();
+Object.extend(Ajax.InPlaceCollectionEditor.prototype, Ajax.InPlaceEditor.prototype);
+Object.extend(Ajax.InPlaceCollectionEditor.prototype, {
+  createEditField: function() {
+    if (!this.cached_selectTag) {
+      var selectTag = document.createElement("select");
+      var collection = this.options.collection || [];
+      var optionTag;
+      collection.each(function(e,i) {
+        optionTag = document.createElement("option");
+        optionTag.value = (e instanceof Array) ? e[0] : e;
+        if((typeof this.options.value == 'undefined') && 
+          ((e instanceof Array) ? this.element.innerHTML == e[1] : e == optionTag.value)) optionTag.selected = true;
+        if(this.options.value==optionTag.value) optionTag.selected = true;
+        optionTag.appendChild(document.createTextNode((e instanceof Array) ? e[1] : e));
+        selectTag.appendChild(optionTag);
+      }.bind(this));
+      this.cached_selectTag = selectTag;
+    }
+
+    this.editField = this.cached_selectTag;
+    if(this.options.loadTextURL) this.loadExternalText();
+    this.form.appendChild(this.editField);
+    this.options.callback = function(form, value) {
+      return "value=" + encodeURIComponent(value);
+    }
+  }
+});
+
 // Delayed observer, like Form.Element.Observer, 
 // but waits for delay after last key input
 // Ideal for live-search fields
@@ -747,4 +830,4 @@ Form.Element.DelayedObserver.prototype = {
     this.timer = null;
     this.callback(this.element, $F(this.element));
   }
-};
\ No newline at end of file
+};
diff --git a/public/javascripts/dragdrop.js b/public/javascripts/dragdrop.js
index 92d1f7316..c71ddb827 100644
--- a/public/javascripts/dragdrop.js
+++ b/public/javascripts/dragdrop.js
@@ -1,8 +1,11 @@
-// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+// Copyright (c) 2005, 2006 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+//           (c) 2005, 2006 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz)
 // 
-// See scriptaculous.js for full license.
+// script.aculo.us is freely distributable under the terms of an MIT-style license.
+// For details, see the script.aculo.us web site: http://script.aculo.us/
 
-/*--------------------------------------------------------------------------*/
+if(typeof Effect == 'undefined')
+  throw("dragdrop.js requires including script.aculo.us' effects.js library");
 
 var Droppables = {
   drops: [],
@@ -15,7 +18,8 @@ var Droppables = {
     element = $(element);
     var options = Object.extend({
       greedy:     true,
-      hoverclass: null  
+      hoverclass: null,
+      tree:       false
     }, arguments[1] || {});
 
     // cache containers
@@ -37,12 +41,27 @@ var Droppables = {
 
     this.drops.push(options);
   },
+  
+  findDeepestChild: function(drops) {
+    deepest = drops[0];
+      
+    for (i = 1; i < drops.length; ++i)
+      if (Element.isParent(drops[i].element, deepest.element))
+        deepest = drops[i];
+    
+    return deepest;
+  },
 
   isContained: function(element, drop) {
-    var parentNode = element.parentNode;
-    return drop._containers.detect(function(c) { return parentNode == c });
+    var containmentNode;
+    if(drop.tree) {
+      containmentNode = element.treeNode; 
+    } else {
+      containmentNode = element.parentNode;
+    }
+    return drop._containers.detect(function(c) { return containmentNode == c });
   },
-
+  
   isAffected: function(point, element, drop) {
     return (
       (drop.element!=element) &&
@@ -68,18 +87,22 @@ var Droppables = {
 
   show: function(point, element) {
     if(!this.drops.length) return;
+    var affected = [];
     
     if(this.last_active) this.deactivate(this.last_active);
     this.drops.each( function(drop) {
-      if(Droppables.isAffected(point, element, drop)) {
-        if(drop.onHover)
-           drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));
-        if(drop.greedy) { 
-          Droppables.activate(drop);
-          throw $break;
-        }
-      }
+      if(Droppables.isAffected(point, element, drop))
+        affected.push(drop);
     });
+        
+    if(affected.length>0) {
+      drop = Droppables.findDeepestChild(affected);
+      Position.within(drop.element, point[0], point[1]);
+      if(drop.onHover)
+        drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));
+      
+      Droppables.activate(drop);
+    }
   },
 
   fire: function(event, element) {
@@ -124,11 +147,19 @@ var Draggables = {
   },
   
   activate: function(draggable) {
-    window.focus(); // allows keypress events if window isn't currently focused, fails for Safari
-    this.activeDraggable = draggable;
+    if(draggable.options.delay) { 
+      this._timeout = setTimeout(function() { 
+        Draggables._timeout = null; 
+        window.focus(); 
+        Draggables.activeDraggable = draggable; 
+      }.bind(this), draggable.options.delay); 
+    } else {
+      window.focus(); // allows keypress events if window isn't currently focused, fails for Safari
+      this.activeDraggable = draggable;
+    }
   },
   
-  deactivate: function(draggbale) {
+  deactivate: function() {
     this.activeDraggable = null;
   },
   
@@ -139,13 +170,19 @@ var Draggables = {
     // the same coordinates, prevent needless redrawing (moz bug?)
     if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return;
     this._lastPointer = pointer;
+    
     this.activeDraggable.updateDrag(event, pointer);
   },
   
   endDrag: function(event) {
+    if(this._timeout) { 
+      clearTimeout(this._timeout); 
+      this._timeout = null; 
+    }
     if(!this.activeDraggable) return;
     this._lastPointer = null;
     this.activeDraggable.endDrag(event);
+    this.activeDraggable = null;
   },
   
   keyPress: function(event) {
@@ -168,6 +205,7 @@ var Draggables = {
       this.observers.each( function(o) {
         if(o[eventName]) o[eventName](eventName, draggable, event);
       });
+    if(draggable.options[eventName]) draggable.options[eventName](draggable, event);
   },
   
   _cacheObserverCallbacks: function() {
@@ -182,31 +220,59 @@ var Draggables = {
 /*--------------------------------------------------------------------------*/
 
 var Draggable = Class.create();
+Draggable._dragging    = {};
+
 Draggable.prototype = {
   initialize: function(element) {
-    var options = Object.extend({
+    var defaults = {
       handle: false,
-      starteffect: function(element) { 
-        new Effect.Opacity(element, {duration:0.2, from:1.0, to:0.7}); 
-      },
       reverteffect: function(element, top_offset, left_offset) {
         var dur = Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02;
-        element._revert = new Effect.MoveBy(element, -top_offset, -left_offset, {duration:dur});
+        new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur,
+          queue: {scope:'_draggable', position:'end'}
+        });
       },
-      endeffect: function(element) { 
-        new Effect.Opacity(element, {duration:0.2, from:0.7, to:1.0}); 
+      endeffect: function(element) {
+        var toOpacity = typeof element._opacity == 'number' ? element._opacity : 1.0;
+        new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity, 
+          queue: {scope:'_draggable', position:'end'},
+          afterFinish: function(){ 
+            Draggable._dragging[element] = false 
+          }
+        }); 
       },
       zindex: 1000,
       revert: false,
-      snap: false   // false, or xy or [x,y] or function(x,y){ return [x,y] }
-    }, arguments[1] || {});
+      scroll: false,
+      scrollSensitivity: 20,
+      scrollSpeed: 15,
+      snap: false,  // false, or xy or [x,y] or function(x,y){ return [x,y] }
+      delay: 0
+    };
+    
+    if(!arguments[1] || typeof arguments[1].endeffect == 'undefined')
+      Object.extend(defaults, {
+        starteffect: function(element) {
+          element._opacity = Element.getOpacity(element);
+          Draggable._dragging[element] = true;
+          new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7}); 
+        }
+      });
+    
+    var options = Object.extend(defaults, arguments[1] || {});
 
     this.element = $(element);
     
     if(options.handle && (typeof options.handle == 'string'))
-      this.handle = Element.childrenWithClassName(this.element, options.handle)[0];  
+      this.handle = this.element.down('.'+options.handle, 0);
+    
     if(!this.handle) this.handle = $(options.handle);
     if(!this.handle) this.handle = this.element;
+    
+    if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) {
+      options.scroll = $(options.scroll);
+      this._isScrollChild = Element.childOf(this.element, options.scroll);
+    }
 
     Element.makePositioned(this.element); // fix IE    
 
@@ -227,25 +293,23 @@ Draggable.prototype = {
   
   currentDelta: function() {
     return([
-      parseInt(this.element.style.left || '0'),
-      parseInt(this.element.style.top || '0')]);
+      parseInt(Element.getStyle(this.element,'left') || '0'),
+      parseInt(Element.getStyle(this.element,'top') || '0')]);
   },
   
   initDrag: function(event) {
+    if(typeof Draggable._dragging[this.element] != 'undefined' &&
+      Draggable._dragging[this.element]) return;
     if(Event.isLeftClick(event)) {    
       // abort on form elements, fixes a Firefox issue
       var src = Event.element(event);
       if(src.tagName && (
         src.tagName=='INPUT' ||
         src.tagName=='SELECT' ||
+        src.tagName=='OPTION' ||
         src.tagName=='BUTTON' ||
         src.tagName=='TEXTAREA')) return;
         
-      if(this.element._revert) {
-        this.element._revert.cancel();
-        this.element._revert = null;
-      }
-      
       var pointer = [Event.pointerX(event), Event.pointerY(event)];
       var pos     = Position.cumulativeOffset(this.element);
       this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) });
@@ -269,7 +333,19 @@ Draggable.prototype = {
       this.element.parentNode.insertBefore(this._clone, this.element);
     }
     
+    if(this.options.scroll) {
+      if (this.options.scroll == window) {
+        var where = this._getWindowScroll(this.options.scroll);
+        this.originalScrollLeft = where.left;
+        this.originalScrollTop = where.top;
+      } else {
+        this.originalScrollLeft = this.options.scroll.scrollLeft;
+        this.originalScrollTop = this.options.scroll.scrollTop;
+      }
+    }
+    
     Draggables.notify('onStart', this, event);
+        
     if(this.options.starteffect) this.options.starteffect(this.element);
   },
   
@@ -278,11 +354,34 @@ Draggable.prototype = {
     Position.prepare();
     Droppables.show(pointer, this.element);
     Draggables.notify('onDrag', this, event);
+    
     this.draw(pointer);
     if(this.options.change) this.options.change(this);
     
+    if(this.options.scroll) {
+      this.stopScrolling();
+      
+      var p;
+      if (this.options.scroll == window) {
+        with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; }
+      } else {
+        p = Position.page(this.options.scroll);
+        p[0] += this.options.scroll.scrollLeft + Position.deltaX;
+        p[1] += this.options.scroll.scrollTop + Position.deltaY;
+        p.push(p[0]+this.options.scroll.offsetWidth);
+        p.push(p[1]+this.options.scroll.offsetHeight);
+      }
+      var speed = [0,0];
+      if(pointer[0] < (p[0]+this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[0]+this.options.scrollSensitivity);
+      if(pointer[1] < (p[1]+this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[1]+this.options.scrollSensitivity);
+      if(pointer[0] > (p[2]-this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[2]-this.options.scrollSensitivity);
+      if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity);
+      this.startScrolling(speed);
+    }
+    
     // fix AppleWebKit rendering
     if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);
+    
     Event.stop(event);
   },
   
@@ -314,33 +413,46 @@ Draggable.prototype = {
 
     if(this.options.endeffect) 
       this.options.endeffect(this.element);
-
+      
     Draggables.deactivate(this);
     Droppables.reset();
   },
   
   keyPress: function(event) {
-    if(!event.keyCode==Event.KEY_ESC) return;
+    if(event.keyCode!=Event.KEY_ESC) return;
     this.finishDrag(event, false);
     Event.stop(event);
   },
   
   endDrag: function(event) {
     if(!this.dragging) return;
+    this.stopScrolling();
     this.finishDrag(event, true);
     Event.stop(event);
   },
   
   draw: function(point) {
     var pos = Position.cumulativeOffset(this.element);
+    if(this.options.ghosting) {
+      var r   = Position.realOffset(this.element);
+      pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY;
+    }
+    
     var d = this.currentDelta();
     pos[0] -= d[0]; pos[1] -= d[1];
     
-    var p = [0,1].map(function(i){ return (point[i]-pos[i]-this.offset[i]) }.bind(this));
+    if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) {
+      pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft;
+      pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop;
+    }
+    
+    var p = [0,1].map(function(i){ 
+      return (point[i]-pos[i]-this.offset[i]) 
+    }.bind(this));
     
     if(this.options.snap) {
       if(typeof this.options.snap == 'function') {
-        p = this.options.snap(p[0],p[1]);
+        p = this.options.snap(p[0],p[1],this);
       } else {
       if(this.options.snap instanceof Array) {
         p = p.map( function(v, i) {
@@ -356,7 +468,80 @@ Draggable.prototype = {
       style.left = p[0] + "px";
     if((!this.options.constraint) || (this.options.constraint=='vertical'))
       style.top  = p[1] + "px";
+    
     if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering
+  },
+  
+  stopScrolling: function() {
+    if(this.scrollInterval) {
+      clearInterval(this.scrollInterval);
+      this.scrollInterval = null;
+      Draggables._lastScrollPointer = null;
+    }
+  },
+  
+  startScrolling: function(speed) {
+    if(!(speed[0] || speed[1])) return;
+    this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed];
+    this.lastScrolled = new Date();
+    this.scrollInterval = setInterval(this.scroll.bind(this), 10);
+  },
+  
+  scroll: function() {
+    var current = new Date();
+    var delta = current - this.lastScrolled;
+    this.lastScrolled = current;
+    if(this.options.scroll == window) {
+      with (this._getWindowScroll(this.options.scroll)) {
+        if (this.scrollSpeed[0] || this.scrollSpeed[1]) {
+          var d = delta / 1000;
+          this.options.scroll.scrollTo( left + d*this.scrollSpeed[0], top + d*this.scrollSpeed[1] );
+        }
+      }
+    } else {
+      this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000;
+      this.options.scroll.scrollTop  += this.scrollSpeed[1] * delta / 1000;
+    }
+    
+    Position.prepare();
+    Droppables.show(Draggables._lastPointer, this.element);
+    Draggables.notify('onDrag', this);
+    if (this._isScrollChild) {
+      Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer);
+      Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000;
+      Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000;
+      if (Draggables._lastScrollPointer[0] < 0)
+        Draggables._lastScrollPointer[0] = 0;
+      if (Draggables._lastScrollPointer[1] < 0)
+        Draggables._lastScrollPointer[1] = 0;
+      this.draw(Draggables._lastScrollPointer);
+    }
+    
+    if(this.options.change) this.options.change(this);
+  },
+  
+  _getWindowScroll: function(w) {
+    var T, L, W, H;
+    with (w.document) {
+      if (w.document.documentElement && documentElement.scrollTop) {
+        T = documentElement.scrollTop;
+        L = documentElement.scrollLeft;
+      } else if (w.document.body) {
+        T = body.scrollTop;
+        L = body.scrollLeft;
+      }
+      if (w.innerWidth) {
+        W = w.innerWidth;
+        H = w.innerHeight;
+      } else if (w.document.documentElement && documentElement.clientWidth) {
+        W = documentElement.clientWidth;
+        H = documentElement.clientHeight;
+      } else {
+        W = body.offsetWidth;
+        H = body.offsetHeight
+      }
+    }
+    return { top: T, left: L, width: W, height: H };
   }
 }
 
@@ -382,38 +567,55 @@ SortableObserver.prototype = {
 }
 
 var Sortable = {
-  sortables: new Array(),
+  SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/,
   
-  options: function(element){
-    element = $(element);
-    return this.sortables.detect(function(s) { return s.element == element });
+  sortables: {},
+  
+  _findRootElement: function(element) {
+    while (element.tagName != "BODY") {  
+      if(element.id && Sortable.sortables[element.id]) return element;
+      element = element.parentNode;
+    }
+  },
+
+  options: function(element) {
+    element = Sortable._findRootElement($(element));
+    if(!element) return;
+    return Sortable.sortables[element.id];
   },
   
   destroy: function(element){
-    element = $(element);
-    this.sortables.findAll(function(s) { return s.element == element }).each(function(s){
+    var s = Sortable.options(element);
+    
+    if(s) {
       Draggables.removeObserver(s.element);
       s.droppables.each(function(d){ Droppables.remove(d) });
       s.draggables.invoke('destroy');
-    });
-    this.sortables = this.sortables.reject(function(s) { return s.element == element });
+      
+      delete Sortable.sortables[s.element.id];
+    }
   },
-  
+
   create: function(element) {
     element = $(element);
     var options = Object.extend({ 
       element:     element,
       tag:         'li',       // assumes li children, override with tag: 'tagname'
       dropOnEmpty: false,
-      tree:        false,      // fixme: unimplemented
+      tree:        false,
+      treeTag:     'ul',
       overlap:     'vertical', // one of 'vertical', 'horizontal'
       constraint:  'vertical', // one of 'vertical', 'horizontal', false
       containment: element,    // also takes array of elements (or id's); or false
       handle:      false,      // or a CSS class
       only:        false,
+      delay:       0,
       hoverclass:  null,
       ghosting:    false,
-      format:      null,
+      scroll:      false,
+      scrollSensitivity: 20,
+      scrollSpeed: 15,
+      format:      this.SERIALIZE_RULE,
       onChange:    Prototype.emptyFunction,
       onUpdate:    Prototype.emptyFunction
     }, arguments[1] || {});
@@ -424,6 +626,10 @@ var Sortable = {
     // build options for the draggables
     var options_for_draggable = {
       revert:      true,
+      scroll:      options.scroll,
+      scrollSpeed: options.scrollSpeed,
+      scrollSensitivity: options.scrollSensitivity,
+      delay:       options.delay,
       ghosting:    options.ghosting,
       constraint:  options.constraint,
       handle:      options.handle };
@@ -449,9 +655,16 @@ var Sortable = {
     var options_for_droppable = {
       overlap:     options.overlap,
       containment: options.containment,
+      tree:        options.tree,
       hoverclass:  options.hoverclass,
-      onHover:     Sortable.onHover,
-      greedy:      !options.dropOnEmpty
+      onHover:     Sortable.onHover
+    }
+    
+    var options_for_tree = {
+      onHover:      Sortable.onEmptyHover,
+      overlap:      options.overlap,
+      containment:  options.containment,
+      hoverclass:   options.hoverclass
     }
 
     // fix for gecko engine
@@ -460,27 +673,33 @@ var Sortable = {
     options.draggables = [];
     options.droppables = [];
 
-    // make it so
-
     // drop on empty handling
-    if(options.dropOnEmpty) {
-      Droppables.add(element,
-        {containment: options.containment, onHover: Sortable.onEmptyHover, greedy: false});
+    if(options.dropOnEmpty || options.tree) {
+      Droppables.add(element, options_for_tree);
       options.droppables.push(element);
     }
 
     (this.findElements(element, options) || []).each( function(e) {
       // handles are per-draggable
       var handle = options.handle ? 
-        Element.childrenWithClassName(e, options.handle)[0] : e;    
+        $(e).down('.'+options.handle,0) : e;    
       options.draggables.push(
         new Draggable(e, Object.extend(options_for_draggable, { handle: handle })));
       Droppables.add(e, options_for_droppable);
+      if(options.tree) e.treeNode = element;
       options.droppables.push(e);      
     });
+    
+    if(options.tree) {
+      (Sortable.findTreeElements(element, options) || []).each( function(e) {
+        Droppables.add(e, options_for_tree);
+        e.treeNode = element;
+        options.droppables.push(e);
+      });
+    }
 
     // keep reference
-    this.sortables.push(options);
+    this.sortables[element.id] = options;
 
     // for onupdate
     Draggables.addObserver(new SortableObserver(element, options.onUpdate));
@@ -489,23 +708,21 @@ var Sortable = {
 
   // return all suitable-for-sortable elements in a guaranteed order
   findElements: function(element, options) {
-    if(!element.hasChildNodes()) return null;
-    var elements = [];
-    $A(element.childNodes).each( function(e) {
-      if(e.tagName && e.tagName.toUpperCase()==options.tag.toUpperCase() &&
-        (!options.only || (Element.hasClassName(e, options.only))))
-          elements.push(e);
-      if(options.tree) {
-        var grandchildren = this.findElements(e, options);
-        if(grandchildren) elements.push(grandchildren);
-      }
-    });
-
-    return (elements.length>0 ? elements.flatten() : null);
+    return Element.findChildren(
+      element, options.only, options.tree ? true : false, options.tag);
+  },
+  
+  findTreeElements: function(element, options) {
+    return Element.findChildren(
+      element, options.only, options.tree ? true : false, options.treeTag);
   },
 
   onHover: function(element, dropon, overlap) {
-    if(overlap>0.5) {
+    if(Element.isParent(dropon, element)) return;
+
+    if(overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) {
+      return;
+    } else if(overlap>0.5) {
       Sortable.mark(dropon, 'before');
       if(dropon.previousSibling != element) {
         var oldParentNode = element.parentNode;
@@ -528,18 +745,42 @@ var Sortable = {
       }
     }
   },
-
-  onEmptyHover: function(element, dropon) {
-    if(element.parentNode!=dropon) {
-      var oldParentNode = element.parentNode;
-      dropon.appendChild(element);
+  
+  onEmptyHover: function(element, dropon, overlap) {
+    var oldParentNode = element.parentNode;
+    var droponOptions = Sortable.options(dropon);
+        
+    if(!Element.isParent(dropon, element)) {
+      var index;
+      
+      var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only});
+      var child = null;
+            
+      if(children) {
+        var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap);
+        
+        for (index = 0; index < children.length; index += 1) {
+          if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) {
+            offset -= Element.offsetSize (children[index], droponOptions.overlap);
+          } else if (offset - (Element.offsetSize (children[index], droponOptions.overlap) / 2) >= 0) {
+            child = index + 1 < children.length ? children[index + 1] : null;
+            break;
+          } else {
+            child = children[index];
+            break;
+          }
+        }
+      }
+      
+      dropon.insertBefore(element, child);
+      
       Sortable.options(oldParentNode).onChange(element);
-      Sortable.options(dropon).onChange(element);
+      droponOptions.onChange(element);
     }
   },
 
   unmark: function() {
-    if(Sortable._marker) Element.hide(Sortable._marker);
+    if(Sortable._marker) Sortable._marker.hide();
   },
 
   mark: function(dropon, position) {
@@ -548,37 +789,154 @@ var Sortable = {
     if(sortable && !sortable.ghosting) return; 
 
     if(!Sortable._marker) {
-      Sortable._marker = $('dropmarker') || document.createElement('DIV');
-      Element.hide(Sortable._marker);
-      Element.addClassName(Sortable._marker, 'dropmarker');
-      Sortable._marker.style.position = 'absolute';
+      Sortable._marker = 
+        ($('dropmarker') || Element.extend(document.createElement('DIV'))).
+          hide().addClassName('dropmarker').setStyle({position:'absolute'});
       document.getElementsByTagName("body").item(0).appendChild(Sortable._marker);
     }    
     var offsets = Position.cumulativeOffset(dropon);
-    Sortable._marker.style.left = offsets[0] + 'px';
-    Sortable._marker.style.top = offsets[1] + 'px';
+    Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'});
     
     if(position=='after')
       if(sortable.overlap == 'horizontal') 
-        Sortable._marker.style.left = (offsets[0]+dropon.clientWidth) + 'px';
+        Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'});
       else
-        Sortable._marker.style.top = (offsets[1]+dropon.clientHeight) + 'px';
+        Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'});
     
-    Element.show(Sortable._marker);
+    Sortable._marker.show();
   },
+  
+  _tree: function(element, options, parent) {
+    var children = Sortable.findElements(element, options) || [];
+  
+    for (var i = 0; i < children.length; ++i) {
+      var match = children[i].id.match(options.format);
 
-  serialize: function(element) {
+      if (!match) continue;
+      
+      var child = {
+        id: encodeURIComponent(match ? match[1] : null),
+        element: element,
+        parent: parent,
+        children: [],
+        position: parent.children.length,
+        container: $(children[i]).down(options.treeTag)
+      }
+      
+      /* Get the element containing the children and recurse over it */
+      if (child.container)
+        this._tree(child.container, options, child)
+      
+      parent.children.push (child);
+    }
+
+    return parent; 
+  },
+
+  tree: function(element) {
     element = $(element);
     var sortableOptions = this.options(element);
     var options = Object.extend({
-      tag:  sortableOptions.tag,
+      tag: sortableOptions.tag,
+      treeTag: sortableOptions.treeTag,
       only: sortableOptions.only,
       name: element.id,
-      format: sortableOptions.format || /^[^_]*_(.*)$/
+      format: sortableOptions.format
     }, arguments[1] || {});
+    
+    var root = {
+      id: null,
+      parent: null,
+      children: [],
+      container: element,
+      position: 0
+    }
+    
+    return Sortable._tree(element, options, root);
+  },
+
+  /* Construct a [i] index for a particular node */
+  _constructIndex: function(node) {
+    var index = '';
+    do {
+      if (node.id) index = '[' + node.position + ']' + index;
+    } while ((node = node.parent) != null);
+    return index;
+  },
+
+  sequence: function(element) {
+    element = $(element);
+    var options = Object.extend(this.options(element), arguments[1] || {});
+    
     return $(this.findElements(element, options) || []).map( function(item) {
-      return (encodeURIComponent(options.name) + "[]=" + 
-              encodeURIComponent(item.id.match(options.format) ? item.id.match(options.format)[1] : ''));
-    }).join("&");
+      return item.id.match(options.format) ? item.id.match(options.format)[1] : '';
+    });
+  },
+
+  setSequence: function(element, new_sequence) {
+    element = $(element);
+    var options = Object.extend(this.options(element), arguments[2] || {});
+    
+    var nodeMap = {};
+    this.findElements(element, options).each( function(n) {
+        if (n.id.match(options.format))
+            nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode];
+        n.parentNode.removeChild(n);
+    });
+   
+    new_sequence.each(function(ident) {
+      var n = nodeMap[ident];
+      if (n) {
+        n[1].appendChild(n[0]);
+        delete nodeMap[ident];
+      }
+    });
+  },
+  
+  serialize: function(element) {
+    element = $(element);
+    var options = Object.extend(Sortable.options(element), arguments[1] || {});
+    var name = encodeURIComponent(
+      (arguments[1] && arguments[1].name) ? arguments[1].name : element.id);
+    
+    if (options.tree) {
+      return Sortable.tree(element, arguments[1]).children.map( function (item) {
+        return [name + Sortable._constructIndex(item) + "[id]=" + 
+                encodeURIComponent(item.id)].concat(item.children.map(arguments.callee));
+      }).flatten().join('&');
+    } else {
+      return Sortable.sequence(element, arguments[1]).map( function(item) {
+        return name + "[]=" + encodeURIComponent(item);
+      }).join('&');
+    }
   }
-}
\ No newline at end of file
+}
+
+// Returns true if child is contained within element
+Element.isParent = function(child, element) {
+  if (!child.parentNode || child == element) return false;
+  if (child.parentNode == element) return true;
+  return Element.isParent(child.parentNode, element);
+}
+
+Element.findChildren = function(element, only, recursive, tagName) {    
+  if(!element.hasChildNodes()) return null;
+  tagName = tagName.toUpperCase();
+  if(only) only = [only].flatten();
+  var elements = [];
+  $A(element.childNodes).each( function(e) {
+    if(e.tagName && e.tagName.toUpperCase()==tagName &&
+      (!only || (Element.classNames(e).detect(function(v) { return only.include(v) }))))
+        elements.push(e);
+    if(recursive) {
+      var grandchildren = Element.findChildren(e, only, recursive, tagName);
+      if(grandchildren) elements.push(grandchildren);
+    }
+  });
+
+  return (elements.length>0 ? elements.flatten() : []);
+}
+
+Element.offsetSize = function (element, type) {
+  return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')];
+}
diff --git a/public/javascripts/effects.js b/public/javascripts/effects.js
index 414398ce4..3b02eda2b 100644
--- a/public/javascripts/effects.js
+++ b/public/javascripts/effects.js
@@ -1,17 +1,16 @@
-// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+// Copyright (c) 2005, 2006 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
 // Contributors:
 //  Justin Palmer (http://encytemedia.com/)
 //  Mark Pilgrim (http://diveintomark.org/)
 //  Martin Bialasinki
 // 
-// See scriptaculous.js for full license.  
+// script.aculo.us is freely distributable under the terms of an MIT-style license.
+// For details, see the script.aculo.us web site: http://script.aculo.us/ 
 
-/* ------------- element ext -------------- */  
- 
 // converts rgb() and #xxx to #xxxxxx format,  
 // returns self (or first argument) if not convertable  
 String.prototype.parseColor = function() {  
-  var color = '#';  
+  var color = '#';
   if(this.slice(0,4) == 'rgb(') {  
     var cols = this.slice(4,this.length-1).split(',');  
     var i=0; do { color += parseInt(cols[i]).toColorPart() } while (++i<3);  
@@ -22,40 +21,38 @@ String.prototype.parseColor = function() {
     }  
   }  
   return(color.length==7 ? color : (arguments[0] || this));  
-}  
+}
 
-Element.collectTextNodesIgnoreClass = function(element, ignoreclass) {  
-  var children = $(element).childNodes;  
-  var text     = '';  
-  var classtest = new RegExp('^([^ ]+ )*' + ignoreclass+ '( [^ ]+)*$','i');  
- 
-  for (var i = 0; i < children.length; i++) {  
-    if(children[i].nodeType==3) {  
-      text+=children[i].nodeValue;  
-    } else {  
-      if((!children[i].className.match(classtest)) && children[i].hasChildNodes())  
-        text += Element.collectTextNodesIgnoreClass(children[i], ignoreclass);  
-    }  
-  }  
- 
-  return text;
+/*--------------------------------------------------------------------------*/
+
+Element.collectTextNodes = function(element) {  
+  return $A($(element).childNodes).collect( function(node) {
+    return (node.nodeType==3 ? node.nodeValue : 
+      (node.hasChildNodes() ? Element.collectTextNodes(node) : ''));
+  }).flatten().join('');
 }
 
-Element.setStyle = function(element, style) {
-  element = $(element);
-  for(k in style) element.style[k.camelize()] = style[k];
+Element.collectTextNodesIgnoreClass = function(element, className) {  
+  return $A($(element).childNodes).collect( function(node) {
+    return (node.nodeType==3 ? node.nodeValue : 
+      ((node.hasChildNodes() && !Element.hasClassName(node,className)) ? 
+        Element.collectTextNodesIgnoreClass(node, className) : ''));
+  }).flatten().join('');
 }
 
-Element.setContentZoom = function(element, percent) {  
-  Element.setStyle(element, {fontSize: (percent/100) + 'em'});   
-  if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);  
+Element.setContentZoom = function(element, percent) {
+  element = $(element);  
+  element.setStyle({fontSize: (percent/100) + 'em'});   
+  if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);
+  return element;
 }
 
-Element.getOpacity = function(element){  
+Element.getOpacity = function(element){
+  element = $(element);
   var opacity;
-  if (opacity = Element.getStyle(element, 'opacity'))  
+  if (opacity = element.getStyle('opacity'))  
     return parseFloat(opacity);  
-  if (opacity = (Element.getStyle(element, 'filter') || '').match(/alpha\(opacity=(.*)\)/))  
+  if (opacity = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))  
     if(opacity[1]) return parseFloat(opacity[1]) / 100;  
   return 1.0;  
 }
@@ -63,29 +60,36 @@ Element.getOpacity = function(element){
 Element.setOpacity = function(element, value){  
   element= $(element);  
   if (value == 1){
-    Element.setStyle(element, { opacity: 
+    element.setStyle({ opacity: 
       (/Gecko/.test(navigator.userAgent) && !/Konqueror|Safari|KHTML/.test(navigator.userAgent)) ? 
-      0.999999 : null });
-    if(/MSIE/.test(navigator.userAgent))  
-      Element.setStyle(element, {filter: Element.getStyle(element,'filter').replace(/alpha\([^\)]*\)/gi,'')});  
+      0.999999 : 1.0 });
+    if(/MSIE/.test(navigator.userAgent) && !window.opera)  
+      element.setStyle({filter: Element.getStyle(element,'filter').replace(/alpha\([^\)]*\)/gi,'')});  
   } else {  
     if(value < 0.00001) value = 0;  
-    Element.setStyle(element, {opacity: value});
-    if(/MSIE/.test(navigator.userAgent))  
-     Element.setStyle(element, 
-       { filter: Element.getStyle(element,'filter').replace(/alpha\([^\)]*\)/gi,'') +
-                 'alpha(opacity='+value*100+')' });  
-  }   
+    element.setStyle({opacity: value});
+    if(/MSIE/.test(navigator.userAgent) && !window.opera)  
+      element.setStyle(
+        { filter: element.getStyle('filter').replace(/alpha\([^\)]*\)/gi,'') +
+            'alpha(opacity='+value*100+')' });  
+  }
+  return element;
 }  
  
 Element.getInlineOpacity = function(element){  
   return $(element).style.opacity || '';
 }  
 
-Element.childrenWithClassName = function(element, className) {  
-  return $A($(element).getElementsByTagName('*')).select(
-    function(c) { return Element.hasClassName(c, className) });
-}
+Element.forceRerendering = function(element) {
+  try {
+    element = $(element);
+    var n = document.createTextNode(' ');
+    element.appendChild(n);
+    element.removeChild(n);
+  } catch(e) { }
+};
+
+/*--------------------------------------------------------------------------*/
 
 Array.prototype.call = function() {
   var args = arguments;
@@ -95,9 +99,17 @@ Array.prototype.call = function() {
 /*--------------------------------------------------------------------------*/
 
 var Effect = {
+  _elementDoesNotExistError: {
+    name: 'ElementDoesNotExistError',
+    message: 'The specified DOM element does not exist, but is required for this effect to operate'
+  },
   tagifyText: function(element) {
+    if(typeof Builder == 'undefined')
+      throw("Effect.tagifyText requires including script.aculo.us' builder.js library");
+      
     var tagifyStyle = 'position:relative';
-    if(/MSIE/.test(navigator.userAgent)) tagifyStyle += ';zoom:1';
+    if(/MSIE/.test(navigator.userAgent) && !window.opera) tagifyStyle += ';zoom:1';
+    
     element = $(element);
     $A(element.childNodes).each( function(child) {
       if(child.nodeType==3) {
@@ -129,6 +141,20 @@ var Effect = {
     $A(elements).each( function(element, index) {
       new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
     });
+  },
+  PAIRS: {
+    'slide':  ['SlideDown','SlideUp'],
+    'blind':  ['BlindDown','BlindUp'],
+    'appear': ['Appear','Fade']
+  },
+  toggle: function(element, effect) {
+    element = $(element);
+    effect = (effect || 'appear').toLowerCase();
+    var options = Object.extend({
+      queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
+    }, arguments[2] || {});
+    Effect[element.visible() ? 
+      Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
   }
 };
 
@@ -136,46 +162,54 @@ var Effect2 = Effect; // deprecated
 
 /* ------------- transitions ------------- */
 
-Effect.Transitions = {}
-
-Effect.Transitions.linear = function(pos) {
-  return pos;
-}
-Effect.Transitions.sinoidal = function(pos) {
-  return (-Math.cos(pos*Math.PI)/2) + 0.5;
-}
-Effect.Transitions.reverse  = function(pos) {
-  return 1-pos;
-}
-Effect.Transitions.flicker = function(pos) {
-  return ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;
-}
-Effect.Transitions.wobble = function(pos) {
-  return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
-}
-Effect.Transitions.pulse = function(pos) {
-  return (Math.floor(pos*10) % 2 == 0 ? 
-    (pos*10-Math.floor(pos*10)) : 1-(pos*10-Math.floor(pos*10)));
-}
-Effect.Transitions.none = function(pos) {
-  return 0;
-}
-Effect.Transitions.full = function(pos) {
-  return 1;
-}
+Effect.Transitions = {
+  linear: Prototype.K,
+  sinoidal: function(pos) {
+    return (-Math.cos(pos*Math.PI)/2) + 0.5;
+  },
+  reverse: function(pos) {
+    return 1-pos;
+  },
+  flicker: function(pos) {
+    return ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;
+  },
+  wobble: function(pos) {
+    return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
+  },
+  pulse: function(pos, pulses) { 
+    pulses = pulses || 5; 
+    return (
+      Math.round((pos % (1/pulses)) * pulses) == 0 ? 
+            ((pos * pulses * 2) - Math.floor(pos * pulses * 2)) : 
+        1 - ((pos * pulses * 2) - Math.floor(pos * pulses * 2))
+      );
+  },
+  none: function(pos) {
+    return 0;
+  },
+  full: function(pos) {
+    return 1;
+  }
+};
 
 /* ------------- core effects ------------- */
 
-Effect.Queue = {
-  effects:  [],
+Effect.ScopedQueue = Class.create();
+Object.extend(Object.extend(Effect.ScopedQueue.prototype, Enumerable), {
+  initialize: function() {
+    this.effects  = [];
+    this.interval = null;
+  },
   _each: function(iterator) {
     this.effects._each(iterator);
   },
-  interval: null,
   add: function(effect) {
     var timestamp = new Date().getTime();
     
-    switch(effect.options.queue) {
+    var position = (typeof effect.options.queue == 'string') ? 
+      effect.options.queue : effect.options.queue.position;
+    
+    switch(position) {
       case 'front':
         // move unstarted effects after this effect  
         this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {
@@ -183,6 +217,9 @@ Effect.Queue = {
             e.finishOn += effect.finishOn;
           });
         break;
+      case 'with-last':
+        timestamp = this.effects.pluck('startOn').max() || timestamp;
+        break;
       case 'end':
         // start effect after last queued effect has finished
         timestamp = this.effects.pluck('finishOn').max() || timestamp;
@@ -191,7 +228,10 @@ Effect.Queue = {
     
     effect.startOn  += timestamp;
     effect.finishOn += timestamp;
-    this.effects.push(effect);
+
+    if(!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
+      this.effects.push(effect);
+    
     if(!this.interval) 
       this.interval = setInterval(this.loop.bind(this), 40);
   },
@@ -206,32 +246,45 @@ Effect.Queue = {
     var timePos = new Date().getTime();
     this.effects.invoke('loop', timePos);
   }
+});
+
+Effect.Queues = {
+  instances: $H(),
+  get: function(queueName) {
+    if(typeof queueName != 'string') return queueName;
+    
+    if(!this.instances[queueName])
+      this.instances[queueName] = new Effect.ScopedQueue();
+      
+    return this.instances[queueName];
+  }
+}
+Effect.Queue = Effect.Queues.get('global');
+
+Effect.DefaultOptions = {
+  transition: Effect.Transitions.sinoidal,
+  duration:   1.0,   // seconds
+  fps:        25.0,  // max. 25fps due to Effect.Queue implementation
+  sync:       false, // true for combining
+  from:       0.0,
+  to:         1.0,
+  delay:      0.0,
+  queue:      'parallel'
 }
-Object.extend(Effect.Queue, Enumerable);
 
 Effect.Base = function() {};
 Effect.Base.prototype = {
   position: null,
-  setOptions: function(options) {
-    this.options = Object.extend({
-      transition: Effect.Transitions.sinoidal,
-      duration:   1.0,   // seconds
-      fps:        25.0,  // max. 25fps due to Effect.Queue implementation
-      sync:       false, // true for combining
-      from:       0.0,
-      to:         1.0,
-      delay:      0.0,
-      queue:      'parallel'
-    }, options || {});
-  },
   start: function(options) {
-    this.setOptions(options || {});
+    this.options      = Object.extend(Object.extend({},Effect.DefaultOptions), options || {});
     this.currentFrame = 0;
     this.state        = 'idle';
     this.startOn      = this.options.delay*1000;
     this.finishOn     = this.startOn + (this.options.duration*1000);
     this.event('beforeStart');
-    if(!this.options.sync) Effect.Queue.add(this);
+    if(!this.options.sync)
+      Effect.Queues.get(typeof this.options.queue == 'string' ? 
+        'global' : this.options.queue.scope).add(this);
   },
   loop: function(timePos) {
     if(timePos >= this.startOn) {
@@ -269,7 +322,9 @@ Effect.Base.prototype = {
     }
   },
   cancel: function() {
-    if(!this.options.sync) Effect.Queue.remove(this);
+    if(!this.options.sync)
+      Effect.Queues.get(typeof this.options.queue == 'string' ? 
+        'global' : this.options.queue.scope).remove(this);
     this.state = 'finished';
   },
   event: function(eventName) {
@@ -301,53 +356,81 @@ Object.extend(Object.extend(Effect.Parallel.prototype, Effect.Base.prototype), {
   }
 });
 
+Effect.Event = Class.create();
+Object.extend(Object.extend(Effect.Event.prototype, Effect.Base.prototype), {
+  initialize: function() {
+    var options = Object.extend({
+      duration: 0
+    }, arguments[0] || {});
+    this.start(options);
+  },
+  update: Prototype.emptyFunction
+});
+
 Effect.Opacity = Class.create();
 Object.extend(Object.extend(Effect.Opacity.prototype, Effect.Base.prototype), {
   initialize: function(element) {
     this.element = $(element);
+    if(!this.element) throw(Effect._elementDoesNotExistError);
     // make this work on IE on elements without 'layout'
-    if(/MSIE/.test(navigator.userAgent) && (!this.element.hasLayout))
-      Element.setStyle(this.element, {zoom: 1});
+    if(/MSIE/.test(navigator.userAgent) && !window.opera && (!this.element.currentStyle.hasLayout))
+      this.element.setStyle({zoom: 1});
     var options = Object.extend({
-      from: Element.getOpacity(this.element) || 0.0,
+      from: this.element.getOpacity() || 0.0,
       to:   1.0
     }, arguments[1] || {});
     this.start(options);
   },
   update: function(position) {
-    Element.setOpacity(this.element, position);
+    this.element.setOpacity(position);
   }
 });
 
-Effect.MoveBy = Class.create();
-Object.extend(Object.extend(Effect.MoveBy.prototype, Effect.Base.prototype), {
-  initialize: function(element, toTop, toLeft) {
-    this.element      = $(element);
-    this.toTop        = toTop;
-    this.toLeft       = toLeft;
-    this.start(arguments[3]);
+Effect.Move = Class.create();
+Object.extend(Object.extend(Effect.Move.prototype, Effect.Base.prototype), {
+  initialize: function(element) {
+    this.element = $(element);
+    if(!this.element) throw(Effect._elementDoesNotExistError);
+    var options = Object.extend({
+      x:    0,
+      y:    0,
+      mode: 'relative'
+    }, arguments[1] || {});
+    this.start(options);
   },
   setup: function() {
     // Bug in Opera: Opera returns the "real" position of a static element or
     // relative element that does not have top/left explicitly set.
     // ==> Always set top and left for position relative elements in your stylesheets 
     // (to 0 if you do not need them) 
-    Element.makePositioned(this.element);
-    this.originalTop  = parseFloat(Element.getStyle(this.element,'top')  || '0');
-    this.originalLeft = parseFloat(Element.getStyle(this.element,'left') || '0');
+    this.element.makePositioned();
+    this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
+    this.originalTop  = parseFloat(this.element.getStyle('top')  || '0');
+    if(this.options.mode == 'absolute') {
+      // absolute movement, so we need to calc deltaX and deltaY
+      this.options.x = this.options.x - this.originalLeft;
+      this.options.y = this.options.y - this.originalTop;
+    }
   },
   update: function(position) {
-    Element.setStyle(this.element, {
-      top:  this.toTop  * position + this.originalTop + 'px',
-      left: this.toLeft * position + this.originalLeft + 'px'
+    this.element.setStyle({
+      left: Math.round(this.options.x  * position + this.originalLeft) + 'px',
+      top:  Math.round(this.options.y  * position + this.originalTop)  + 'px'
     });
   }
 });
 
+// for backwards compatibility
+Effect.MoveBy = function(element, toTop, toLeft) {
+  return new Effect.Move(element, 
+    Object.extend({ x: toLeft, y: toTop }, arguments[3] || {}));
+};
+
 Effect.Scale = Class.create();
 Object.extend(Object.extend(Effect.Scale.prototype, Effect.Base.prototype), {
   initialize: function(element, percent) {
-    this.element = $(element)
+    this.element = $(element);
+    if(!this.element) throw(Effect._elementDoesNotExistError);
     var options = Object.extend({
       scaleX: true,
       scaleY: true,
@@ -361,7 +444,7 @@ Object.extend(Object.extend(Effect.Scale.prototype, Effect.Base.prototype), {
   },
   setup: function() {
     this.restoreAfterFinish = this.options.restoreAfterFinish || false;
-    this.elementPositioning = Element.getStyle(this.element,'position');
+    this.elementPositioning = this.element.getStyle('position');
     
     this.originalStyle = {};
     ['top','left','width','height','fontSize'].each( function(k) {
@@ -371,8 +454,8 @@ Object.extend(Object.extend(Effect.Scale.prototype, Effect.Base.prototype), {
     this.originalTop  = this.element.offsetTop;
     this.originalLeft = this.element.offsetLeft;
     
-    var fontSize = Element.getStyle(this.element,'font-size') || '100%';
-    ['em','px','%'].each( function(fontSizeType) {
+    var fontSize = this.element.getStyle('font-size') || '100%';
+    ['em','px','%','pt'].each( function(fontSizeType) {
       if(fontSize.indexOf(fontSizeType)>0) {
         this.fontSize     = parseFloat(fontSize);
         this.fontSizeType = fontSizeType;
@@ -393,16 +476,16 @@ Object.extend(Object.extend(Effect.Scale.prototype, Effect.Base.prototype), {
   update: function(position) {
     var currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
     if(this.options.scaleContent && this.fontSize)
-      Element.setStyle(this.element, {fontSize: this.fontSize * currentScale + this.fontSizeType });
+      this.element.setStyle({fontSize: this.fontSize * currentScale + this.fontSizeType });
     this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
   },
   finish: function(position) {
-    if (this.restoreAfterFinish) Element.setStyle(this.element, this.originalStyle);
+    if(this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
   },
   setDimensions: function(height, width) {
     var d = {};
-    if(this.options.scaleX) d.width = width + 'px';
-    if(this.options.scaleY) d.height = height + 'px';
+    if(this.options.scaleX) d.width = Math.round(width) + 'px';
+    if(this.options.scaleY) d.height = Math.round(height) + 'px';
     if(this.options.scaleFromCenter) {
       var topd  = (height - this.dims[0])/2;
       var leftd = (width  - this.dims[1])/2;
@@ -414,7 +497,7 @@ Object.extend(Object.extend(Effect.Scale.prototype, Effect.Base.prototype), {
         if(this.options.scaleX) d.left = -leftd + 'px';
       }
     }
-    Element.setStyle(this.element, d);
+    this.element.setStyle(d);
   }
 });
 
@@ -422,30 +505,31 @@ Effect.Highlight = Class.create();
 Object.extend(Object.extend(Effect.Highlight.prototype, Effect.Base.prototype), {
   initialize: function(element) {
     this.element = $(element);
+    if(!this.element) throw(Effect._elementDoesNotExistError);
     var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || {});
     this.start(options);
   },
   setup: function() {
     // Prevent executing on elements not in the layout flow
-    if(Element.getStyle(this.element, 'display')=='none') { this.cancel(); return; }
+    if(this.element.getStyle('display')=='none') { this.cancel(); return; }
     // Disable background image during the effect
     this.oldStyle = {
-      backgroundImage: Element.getStyle(this.element, 'background-image') };
-    Element.setStyle(this.element, {backgroundImage: 'none'});
+      backgroundImage: this.element.getStyle('background-image') };
+    this.element.setStyle({backgroundImage: 'none'});
     if(!this.options.endcolor)
-      this.options.endcolor = Element.getStyle(this.element, 'background-color').parseColor('#ffffff');
+      this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
     if(!this.options.restorecolor)
-      this.options.restorecolor = Element.getStyle(this.element, 'background-color');
+      this.options.restorecolor = this.element.getStyle('background-color');
     // init color calculations
     this._base  = $R(0,2).map(function(i){ return parseInt(this.options.startcolor.slice(i*2+1,i*2+3),16) }.bind(this));
     this._delta = $R(0,2).map(function(i){ return parseInt(this.options.endcolor.slice(i*2+1,i*2+3),16)-this._base[i] }.bind(this));
   },
   update: function(position) {
-    Element.setStyle(this.element,{backgroundColor: $R(0,2).inject('#',function(m,v,i){
+    this.element.setStyle({backgroundColor: $R(0,2).inject('#',function(m,v,i){
       return m+(Math.round(this._base[i]+(this._delta[i]*position)).toColorPart()); }.bind(this)) });
   },
   finish: function() {
-    Element.setStyle(this.element, Object.extend(this.oldStyle, {
+    this.element.setStyle(Object.extend(this.oldStyle, {
       backgroundColor: this.options.restorecolor
     }));
   }
@@ -479,86 +563,93 @@ Object.extend(Object.extend(Effect.ScrollTo.prototype, Effect.Base.prototype), {
 /* ------------- combination effects ------------- */
 
 Effect.Fade = function(element) {
-  var oldOpacity = Element.getInlineOpacity(element);
+  element = $(element);
+  var oldOpacity = element.getInlineOpacity();
   var options = Object.extend({
-  from: Element.getOpacity(element) || 1.0,
+  from: element.getOpacity() || 1.0,
   to:   0.0,
-  afterFinishInternal: function(effect) { with(Element) { 
+  afterFinishInternal: function(effect) { 
     if(effect.options.to!=0) return;
-    hide(effect.element);
-    setStyle(effect.element, {opacity: oldOpacity}); }}
-  }, arguments[1] || {});
+    effect.element.hide().setStyle({opacity: oldOpacity}); 
+  }}, arguments[1] || {});
   return new Effect.Opacity(element,options);
 }
 
 Effect.Appear = function(element) {
+  element = $(element);
   var options = Object.extend({
-  from: (Element.getStyle(element, 'display') == 'none' ? 0.0 : Element.getOpacity(element) || 0.0),
+  from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
   to:   1.0,
-  beforeSetup: function(effect) { with(Element) {
-    setOpacity(effect.element, effect.options.from);
-    show(effect.element); }}
-  }, arguments[1] || {});
+  // force Safari to render floated elements properly
+  afterFinishInternal: function(effect) {
+    effect.element.forceRerendering();
+  },
+  beforeSetup: function(effect) {
+    effect.element.setOpacity(effect.options.from).show(); 
+  }}, arguments[1] || {});
   return new Effect.Opacity(element,options);
 }
 
 Effect.Puff = function(element) {
   element = $(element);
-  var oldStyle = { opacity: Element.getInlineOpacity(element), position: Element.getStyle(element, 'position') };
+  var oldStyle = { 
+    opacity: element.getInlineOpacity(), 
+    position: element.getStyle('position'),
+    top:  element.style.top,
+    left: element.style.left,
+    width: element.style.width,
+    height: element.style.height
+  };
   return new Effect.Parallel(
    [ new Effect.Scale(element, 200, 
       { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }), 
      new Effect.Opacity(element, { sync: true, to: 0.0 } ) ], 
      Object.extend({ duration: 1.0, 
-      beforeSetupInternal: function(effect) { with(Element) {
-        setStyle(effect.effects[0].element, {position: 'absolute'}); }},
-      afterFinishInternal: function(effect) { with(Element) {
-         hide(effect.effects[0].element);
-         setStyle(effect.effects[0].element, oldStyle); }}
+      beforeSetupInternal: function(effect) {
+        Position.absolutize(effect.effects[0].element)
+      },
+      afterFinishInternal: function(effect) {
+         effect.effects[0].element.hide().setStyle(oldStyle); }
      }, arguments[1] || {})
    );
 }
 
 Effect.BlindUp = function(element) {
   element = $(element);
-  Element.makeClipping(element);
-  return new Effect.Scale(element, 0, 
+  element.makeClipping();
+  return new Effect.Scale(element, 0,
     Object.extend({ scaleContent: false, 
       scaleX: false, 
       restoreAfterFinish: true,
-      afterFinishInternal: function(effect) { with(Element) {
-        [hide, undoClipping].call(effect.element); }} 
+      afterFinishInternal: function(effect) {
+        effect.element.hide().undoClipping();
+      } 
     }, arguments[1] || {})
   );
 }
 
 Effect.BlindDown = function(element) {
   element = $(element);
-  var oldHeight = Element.getStyle(element, 'height');
-  var elementDimensions = Element.getDimensions(element);
-  return new Effect.Scale(element, 100, 
-    Object.extend({ scaleContent: false, 
-      scaleX: false,
-      scaleFrom: 0,
-      scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
-      restoreAfterFinish: true,
-      afterSetup: function(effect) { with(Element) {
-        makeClipping(effect.element);
-        setStyle(effect.element, {height: '0px'});
-        show(effect.element); 
-      }},  
-      afterFinishInternal: function(effect) { with(Element) {
-        undoClipping(effect.element);
-        setStyle(effect.element, {height: oldHeight});
-      }}
-    }, arguments[1] || {})
-  );
+  var elementDimensions = element.getDimensions();
+  return new Effect.Scale(element, 100, Object.extend({ 
+    scaleContent: false, 
+    scaleX: false,
+    scaleFrom: 0,
+    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
+    restoreAfterFinish: true,
+    afterSetup: function(effect) {
+      effect.element.makeClipping().setStyle({height: '0px'}).show(); 
+    },  
+    afterFinishInternal: function(effect) {
+      effect.element.undoClipping();
+    }
+  }, arguments[1] || {}));
 }
 
 Effect.SwitchOff = function(element) {
   element = $(element);
-  var oldOpacity = Element.getInlineOpacity(element);
-  return new Effect.Appear(element, { 
+  var oldOpacity = element.getInlineOpacity();
+  return new Effect.Appear(element, Object.extend({
     duration: 0.4,
     from: 0,
     transition: Effect.Transitions.flicker,
@@ -566,127 +657,123 @@ Effect.SwitchOff = function(element) {
       new Effect.Scale(effect.element, 1, { 
         duration: 0.3, scaleFromCenter: true,
         scaleX: false, scaleContent: false, restoreAfterFinish: true,
-        beforeSetup: function(effect) { with(Element) {
-          [makePositioned,makeClipping].call(effect.element);
-        }},
-        afterFinishInternal: function(effect) { with(Element) {
-          [hide,undoClipping,undoPositioned].call(effect.element);
-          setStyle(effect.element, {opacity: oldOpacity});
-        }}
+        beforeSetup: function(effect) { 
+          effect.element.makePositioned().makeClipping();
+        },
+        afterFinishInternal: function(effect) {
+          effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
+        }
       })
     }
-  });
+  }, arguments[1] || {}));
 }
 
 Effect.DropOut = function(element) {
   element = $(element);
   var oldStyle = {
-    top: Element.getStyle(element, 'top'),
-    left: Element.getStyle(element, 'left'),
-    opacity: Element.getInlineOpacity(element) };
+    top: element.getStyle('top'),
+    left: element.getStyle('left'),
+    opacity: element.getInlineOpacity() };
   return new Effect.Parallel(
-    [ new Effect.MoveBy(element, 100, 0, { sync: true }), 
+    [ new Effect.Move(element, {x: 0, y: 100, sync: true }), 
       new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
     Object.extend(
       { duration: 0.5,
-        beforeSetup: function(effect) { with(Element) {
-          makePositioned(effect.effects[0].element); }},
-        afterFinishInternal: function(effect) { with(Element) {
-          [hide, undoPositioned].call(effect.effects[0].element);
-          setStyle(effect.effects[0].element, oldStyle); }} 
+        beforeSetup: function(effect) {
+          effect.effects[0].element.makePositioned(); 
+        },
+        afterFinishInternal: function(effect) {
+          effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
+        } 
       }, arguments[1] || {}));
 }
 
 Effect.Shake = function(element) {
   element = $(element);
   var oldStyle = {
-    top: Element.getStyle(element, 'top'),
-    left: Element.getStyle(element, 'left') };
-  return new Effect.MoveBy(element, 0, 20, 
-    { duration: 0.05, afterFinishInternal: function(effect) {
-  new Effect.MoveBy(effect.element, 0, -40, 
-    { duration: 0.1, afterFinishInternal: function(effect) {
-  new Effect.MoveBy(effect.element, 0, 40, 
-    { duration: 0.1, afterFinishInternal: function(effect) {
-  new Effect.MoveBy(effect.element, 0, -40, 
-    { duration: 0.1, afterFinishInternal: function(effect) {
-  new Effect.MoveBy(effect.element, 0, 40, 
-    { duration: 0.1, afterFinishInternal: function(effect) {
-  new Effect.MoveBy(effect.element, 0, -20, 
-    { duration: 0.05, afterFinishInternal: function(effect) { with(Element) {
-        undoPositioned(effect.element);
-        setStyle(effect.element, oldStyle);
-  }}}) }}) }}) }}) }}) }});
+    top: element.getStyle('top'),
+    left: element.getStyle('left') };
+    return new Effect.Move(element, 
+      { x:  20, y: 0, duration: 0.05, afterFinishInternal: function(effect) {
+    new Effect.Move(effect.element,
+      { x: -40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
+    new Effect.Move(effect.element,
+      { x:  40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
+    new Effect.Move(effect.element,
+      { x: -40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
+    new Effect.Move(effect.element,
+      { x:  40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
+    new Effect.Move(effect.element,
+      { x: -20, y: 0, duration: 0.05, afterFinishInternal: function(effect) {
+        effect.element.undoPositioned().setStyle(oldStyle);
+  }}) }}) }}) }}) }}) }});
 }
 
 Effect.SlideDown = function(element) {
-  element = $(element);
-  Element.cleanWhitespace(element);
+  element = $(element).cleanWhitespace();
   // SlideDown need to have the content of the element wrapped in a container element with fixed height!
-  var oldInnerBottom = Element.getStyle(element.firstChild, 'bottom');
-  var elementDimensions = Element.getDimensions(element);
+  var oldInnerBottom = element.down().getStyle('bottom');
+  var elementDimensions = element.getDimensions();
   return new Effect.Scale(element, 100, Object.extend({ 
     scaleContent: false, 
     scaleX: false, 
-    scaleFrom: 0,
+    scaleFrom: window.opera ? 0 : 1,
     scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
     restoreAfterFinish: true,
-    afterSetup: function(effect) { with(Element) {
-      makePositioned(effect.element);
-      makePositioned(effect.element.firstChild);
-      if(window.opera) setStyle(effect.element, {top: ''});
-      makeClipping(effect.element);
-      setStyle(effect.element, {height: '0px'});
-      show(element); }},
-    afterUpdateInternal: function(effect) { with(Element) {
-      setStyle(effect.element.firstChild, {bottom:
-        (effect.dims[0] - effect.element.clientHeight) + 'px' }); }},
-    afterFinishInternal: function(effect) { with(Element) {
-      undoClipping(effect.element); 
-      undoPositioned(effect.element.firstChild);
-      undoPositioned(effect.element);
-      setStyle(effect.element.firstChild, {bottom: oldInnerBottom}); }}
+    afterSetup: function(effect) {
+      effect.element.makePositioned();
+      effect.element.down().makePositioned();
+      if(window.opera) effect.element.setStyle({top: ''});
+      effect.element.makeClipping().setStyle({height: '0px'}).show(); 
+    },
+    afterUpdateInternal: function(effect) {
+      effect.element.down().setStyle({bottom:
+        (effect.dims[0] - effect.element.clientHeight) + 'px' }); 
+    },
+    afterFinishInternal: function(effect) {
+      effect.element.undoClipping().undoPositioned();
+      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom}); }
     }, arguments[1] || {})
   );
 }
-  
+
 Effect.SlideUp = function(element) {
-  element = $(element);
-  Element.cleanWhitespace(element);
-  var oldInnerBottom = Element.getStyle(element.firstChild, 'bottom');
-  return new Effect.Scale(element, 0, 
+  element = $(element).cleanWhitespace();
+  var oldInnerBottom = element.down().getStyle('bottom');
+  return new Effect.Scale(element, window.opera ? 0 : 1,
    Object.extend({ scaleContent: false, 
     scaleX: false, 
     scaleMode: 'box',
     scaleFrom: 100,
     restoreAfterFinish: true,
-    beforeStartInternal: function(effect) { with(Element) {
-      makePositioned(effect.element);
-      makePositioned(effect.element.firstChild);
-      if(window.opera) setStyle(effect.element, {top: ''});
-      makeClipping(effect.element);
-      show(element); }},  
-    afterUpdateInternal: function(effect) { with(Element) {
-      setStyle(effect.element.firstChild, {bottom:
-        (effect.dims[0] - effect.element.clientHeight) + 'px' }); }},
-    afterFinishInternal: function(effect) { with(Element) {
-        [hide, undoClipping].call(effect.element); 
-        undoPositioned(effect.element.firstChild);
-        undoPositioned(effect.element);
-        setStyle(effect.element.firstChild, {bottom: oldInnerBottom}); }}
+    beforeStartInternal: function(effect) {
+      effect.element.makePositioned();
+      effect.element.down().makePositioned();
+      if(window.opera) effect.element.setStyle({top: ''});
+      effect.element.makeClipping().show();
+    },  
+    afterUpdateInternal: function(effect) {
+      effect.element.down().setStyle({bottom:
+        (effect.dims[0] - effect.element.clientHeight) + 'px' });
+    },
+    afterFinishInternal: function(effect) {
+      effect.element.hide().undoClipping().undoPositioned().setStyle({bottom: oldInnerBottom});
+      effect.element.down().undoPositioned();
+    }
    }, arguments[1] || {})
   );
 }
 
 // Bug in opera makes the TD containing this element expand for a instance after finish 
 Effect.Squish = function(element) {
-  return new Effect.Scale(element, window.opera ? 1 : 0, 
-    { restoreAfterFinish: true,
-      beforeSetup: function(effect) { with(Element) {
-        makeClipping(effect.element); }},  
-      afterFinishInternal: function(effect) { with(Element) {
-        hide(effect.element); 
-        undoClipping(effect.element); }}
+  return new Effect.Scale(element, window.opera ? 1 : 0, { 
+    restoreAfterFinish: true,
+    beforeSetup: function(effect) {
+      effect.element.makeClipping(); 
+    },  
+    afterFinishInternal: function(effect) {
+      effect.element.hide().undoClipping(); 
+    }
   });
 }
 
@@ -694,7 +781,7 @@ Effect.Grow = function(element) {
   element = $(element);
   var options = Object.extend({
     direction: 'center',
-    moveTransistion: Effect.Transitions.sinoidal,
+    moveTransition: Effect.Transitions.sinoidal,
     scaleTransition: Effect.Transitions.sinoidal,
     opacityTransition: Effect.Transitions.full
   }, arguments[1] || {});
@@ -703,9 +790,9 @@ Effect.Grow = function(element) {
     left: element.style.left,
     height: element.style.height,
     width: element.style.width,
-    opacity: Element.getInlineOpacity(element) };
+    opacity: element.getInlineOpacity() };
 
-  var dims = Element.getDimensions(element);    
+  var dims = element.getDimensions();    
   var initialMoveX, initialMoveY;
   var moveX, moveY;
   
@@ -737,27 +824,27 @@ Effect.Grow = function(element) {
       break;
   }
   
-  return new Effect.MoveBy(element, initialMoveY, initialMoveX, { 
+  return new Effect.Move(element, {
+    x: initialMoveX,
+    y: initialMoveY,
     duration: 0.01, 
-    beforeSetup: function(effect) { with(Element) {
-      hide(effect.element);
-      makeClipping(effect.element);
-      makePositioned(effect.element);
-    }},
+    beforeSetup: function(effect) {
+      effect.element.hide().makeClipping().makePositioned();
+    },
     afterFinishInternal: function(effect) {
       new Effect.Parallel(
         [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
-          new Effect.MoveBy(effect.element, moveY, moveX, { sync: true, transition: options.moveTransition }),
+          new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
           new Effect.Scale(effect.element, 100, {
             scaleMode: { originalHeight: dims.height, originalWidth: dims.width }, 
             sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
         ], Object.extend({
-             beforeSetup: function(effect) { with(Element) {
-               setStyle(effect.effects[0].element, {height: '0px'});
-               show(effect.effects[0].element); }},
-             afterFinishInternal: function(effect) { with(Element) {
-               [undoClipping, undoPositioned].call(effect.effects[0].element); 
-               setStyle(effect.effects[0].element, oldStyle); }}
+             beforeSetup: function(effect) {
+               effect.effects[0].element.setStyle({height: '0px'}).show(); 
+             },
+             afterFinishInternal: function(effect) {
+               effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle); 
+             }
            }, options)
       )
     }
@@ -768,7 +855,7 @@ Effect.Shrink = function(element) {
   element = $(element);
   var options = Object.extend({
     direction: 'center',
-    moveTransistion: Effect.Transitions.sinoidal,
+    moveTransition: Effect.Transitions.sinoidal,
     scaleTransition: Effect.Transitions.sinoidal,
     opacityTransition: Effect.Transitions.none
   }, arguments[1] || {});
@@ -777,9 +864,9 @@ Effect.Shrink = function(element) {
     left: element.style.left,
     height: element.style.height,
     width: element.style.width,
-    opacity: Element.getInlineOpacity(element) };
+    opacity: element.getInlineOpacity() };
 
-  var dims = Element.getDimensions(element);
+  var dims = element.getDimensions();
   var moveX, moveY;
   
   switch (options.direction) {
@@ -807,13 +894,13 @@ Effect.Shrink = function(element) {
   return new Effect.Parallel(
     [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
       new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true}),
-      new Effect.MoveBy(element, moveY, moveX, { sync: true, transition: options.moveTransition })
+      new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
     ], Object.extend({            
-         beforeStartInternal: function(effect) { with(Element) {
-           [makePositioned, makeClipping].call(effect.effects[0].element) }},
-         afterFinishInternal: function(effect) { with(Element) {
-           [hide, undoClipping, undoPositioned].call(effect.effects[0].element);
-           setStyle(effect.effects[0].element, oldStyle); }}
+         beforeStartInternal: function(effect) {
+           effect.effects[0].element.makePositioned().makeClipping(); 
+         },
+         afterFinishInternal: function(effect) {
+           effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
        }, options)
   );
 }
@@ -821,13 +908,13 @@ Effect.Shrink = function(element) {
 Effect.Pulsate = function(element) {
   element = $(element);
   var options    = arguments[1] || {};
-  var oldOpacity = Element.getInlineOpacity(element);
+  var oldOpacity = element.getInlineOpacity();
   var transition = options.transition || Effect.Transitions.sinoidal;
-  var reverser   = function(pos){ return transition(1-Effect.Transitions.pulse(pos)) };
+  var reverser   = function(pos){ return transition(1-Effect.Transitions.pulse(pos, options.pulses)) };
   reverser.bind(transition);
   return new Effect.Opacity(element, 
-    Object.extend(Object.extend({  duration: 3.0, from: 0,
-      afterFinishInternal: function(effect) { Element.setStyle(effect.element, {opacity: oldOpacity}); }
+    Object.extend(Object.extend({  duration: 2.0, from: 0,
+      afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
     }, options), {transition: reverser}));
 }
 
@@ -838,7 +925,7 @@ Effect.Fold = function(element) {
     left: element.style.left,
     width: element.style.width,
     height: element.style.height };
-  Element.makeClipping(element);
+  element.makeClipping();
   return new Effect.Scale(element, 5, Object.extend({   
     scaleContent: false,
     scaleX: false,
@@ -846,9 +933,156 @@ Effect.Fold = function(element) {
     new Effect.Scale(element, 1, { 
       scaleContent: false, 
       scaleY: false,
-      afterFinishInternal: function(effect) { with(Element) {
-        [hide, undoClipping].call(effect.element); 
-        setStyle(effect.element, oldStyle);
-      }} });
+      afterFinishInternal: function(effect) {
+        effect.element.hide().undoClipping().setStyle(oldStyle);
+      } });
   }}, arguments[1] || {}));
-}
+};
+
+Effect.Morph = Class.create();
+Object.extend(Object.extend(Effect.Morph.prototype, Effect.Base.prototype), {
+  initialize: function(element) {
+    this.element = $(element);
+    if(!this.element) throw(Effect._elementDoesNotExistError);
+    var options = Object.extend({
+      style: ''
+    }, arguments[1] || {});
+    this.start(options);
+  },
+  setup: function(){
+    function parseColor(color){
+      if(!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
+      color = color.parseColor();
+      return $R(0,2).map(function(i){
+        return parseInt( color.slice(i*2+1,i*2+3), 16 ) 
+      });
+    }
+    this.transforms = this.options.style.parseStyle().map(function(property){
+      var originalValue = this.element.getStyle(property[0]);
+      return $H({ 
+        style: property[0], 
+        originalValue: property[1].unit=='color' ? 
+          parseColor(originalValue) : parseFloat(originalValue || 0), 
+        targetValue: property[1].unit=='color' ? 
+          parseColor(property[1].value) : property[1].value,
+        unit: property[1].unit
+      });
+    }.bind(this)).reject(function(transform){
+      return (
+        (transform.originalValue == transform.targetValue) ||
+        (
+          transform.unit != 'color' &&
+          (isNaN(transform.originalValue) || isNaN(transform.targetValue))
+        )
+      )
+    });
+  },
+  update: function(position) {
+    var style = $H(), value = null;
+    this.transforms.each(function(transform){
+      value = transform.unit=='color' ?
+        $R(0,2).inject('#',function(m,v,i){
+          return m+(Math.round(transform.originalValue[i]+
+            (transform.targetValue[i] - transform.originalValue[i])*position)).toColorPart() }) : 
+        transform.originalValue + Math.round(
+          ((transform.targetValue - transform.originalValue) * position) * 1000)/1000 + transform.unit;
+      style[transform.style] = value;
+    });
+    this.element.setStyle(style);
+  }
+});
+
+Effect.Transform = Class.create();
+Object.extend(Effect.Transform.prototype, {
+  initialize: function(tracks){
+    this.tracks  = [];
+    this.options = arguments[1] || {};
+    this.addTracks(tracks);
+  },
+  addTracks: function(tracks){
+    tracks.each(function(track){
+      var data = $H(track).values().first();
+      this.tracks.push($H({
+        ids:     $H(track).keys().first(),
+        effect:  Effect.Morph,
+        options: { style: data }
+      }));
+    }.bind(this));
+    return this;
+  },
+  play: function(){
+    return new Effect.Parallel(
+      this.tracks.map(function(track){
+        var elements = [$(track.ids) || $$(track.ids)].flatten();
+        return elements.map(function(e){ return new track.effect(e, Object.extend({ sync:true }, track.options)) });
+      }).flatten(),
+      this.options
+    );
+  }
+});
+
+Element.CSS_PROPERTIES = ['azimuth', 'backgroundAttachment', 'backgroundColor', 'backgroundImage', 
+  'backgroundPosition', 'backgroundRepeat', 'borderBottomColor', 'borderBottomStyle', 
+  'borderBottomWidth', 'borderCollapse', 'borderLeftColor', 'borderLeftStyle', 'borderLeftWidth',
+  'borderRightColor', 'borderRightStyle', 'borderRightWidth', 'borderSpacing', 'borderTopColor',
+  'borderTopStyle', 'borderTopWidth', 'bottom', 'captionSide', 'clear', 'clip', 'color', 'content',
+  'counterIncrement', 'counterReset', 'cssFloat', 'cueAfter', 'cueBefore', 'cursor', 'direction',
+  'display', 'elevation', 'emptyCells', 'fontFamily', 'fontSize', 'fontSizeAdjust', 'fontStretch',
+  'fontStyle', 'fontVariant', 'fontWeight', 'height', 'left', 'letterSpacing', 'lineHeight',
+  'listStyleImage', 'listStylePosition', 'listStyleType', 'marginBottom', 'marginLeft', 'marginRight',
+  'marginTop', 'markerOffset', 'marks', 'maxHeight', 'maxWidth', 'minHeight', 'minWidth', 'opacity',
+  'orphans', 'outlineColor', 'outlineOffset', 'outlineStyle', 'outlineWidth', 'overflowX', 'overflowY',
+  'paddingBottom', 'paddingLeft', 'paddingRight', 'paddingTop', 'page', 'pageBreakAfter', 'pageBreakBefore',
+  'pageBreakInside', 'pauseAfter', 'pauseBefore', 'pitch', 'pitchRange', 'position', 'quotes',
+  'richness', 'right', 'size', 'speakHeader', 'speakNumeral', 'speakPunctuation', 'speechRate', 'stress',
+  'tableLayout', 'textAlign', 'textDecoration', 'textIndent', 'textShadow', 'textTransform', 'top',
+  'unicodeBidi', 'verticalAlign', 'visibility', 'voiceFamily', 'volume', 'whiteSpace', 'widows',
+  'width', 'wordSpacing', 'zIndex'];
+  
+Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;
+
+String.prototype.parseStyle = function(){
+  var element = Element.extend(document.createElement('div'));
+  element.innerHTML = '<div style="' + this + '"></div>';
+  var style = element.down().style, styleRules = $H();
+  
+  Element.CSS_PROPERTIES.each(function(property){
+   if(style[property]) styleRules[property] = style[property]; 
+  });
+  
+  var result = $H();
+  
+  styleRules.each(function(pair){
+    var property = pair[0], value = pair[1], unit = null;
+    
+    if(value.parseColor('#zzzzzz') != '#zzzzzz') {
+      value = value.parseColor();
+      unit  = 'color';
+    } else if(Element.CSS_LENGTH.test(value)) 
+      var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/),
+          value = parseFloat(components[1]), unit = (components.length == 3) ? components[2] : null;
+    
+    result[property.underscore().dasherize()] = $H({ value:value, unit:unit });
+  }.bind(this));
+  
+  return result;
+};
+
+Element.morph = function(element, style) {
+  new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || {}));
+  return element;
+};
+
+['setOpacity','getOpacity','getInlineOpacity','forceRerendering','setContentZoom',
+ 'collectTextNodes','collectTextNodesIgnoreClass','morph'].each( 
+  function(f) { Element.Methods[f] = Element[f]; }
+);
+
+Element.Methods.visualEffect = function(element, effect, options) {
+  s = effect.gsub(/_/, '-').camelize();
+  effect_class = s.charAt(0).toUpperCase() + s.substring(1);
+  new Effect[effect_class](element, options);
+  return $(element);
+};
+
+Element.addMethods();
\ No newline at end of file
diff --git a/public/javascripts/prototype.js b/public/javascripts/prototype.js
index e48775468..505822177 100644
--- a/public/javascripts/prototype.js
+++ b/public/javascripts/prototype.js
@@ -1,5 +1,5 @@
-/*  Prototype JavaScript framework, version 1.5.0_rc1
- *  (c) 2005 Sam Stephenson <sam@conio.net>
+/*  Prototype JavaScript framework, version 1.5.0
+ *  (c) 2005-2007 Sam Stephenson
  *
  *  Prototype is freely distributable under the terms of an MIT-style license.
  *  For details, see the Prototype web site: http://prototype.conio.net/
@@ -7,7 +7,7 @@
 /*--------------------------------------------------------------------------*/
 
 var Prototype = {
-  Version: '1.5.0_rc1',
+  Version: '1.5.0',
   BrowserFeatures: {
     XPath: !!document.evaluate
   },
@@ -100,7 +100,7 @@ var Try = {
   these: function() {
     var returnValue;
 
-    for (var i = 0; i < arguments.length; i++) {
+    for (var i = 0, length = arguments.length; i < length; i++) {
       var lambda = arguments[i];
       try {
         returnValue = lambda();
@@ -145,6 +145,10 @@ PeriodicalExecuter.prototype = {
     }
   }
 }
+String.interpret = function(value){
+  return value == null ? '' : String(value);
+}
+
 Object.extend(String.prototype, {
   gsub: function(pattern, replacement) {
     var result = '', source = this, match;
@@ -153,7 +157,7 @@ Object.extend(String.prototype, {
     while (source.length > 0) {
       if (match = source.match(pattern)) {
         result += source.slice(0, match.index);
-        result += (replacement(match) || '').toString();
+        result += String.interpret(replacement(match));
         source  = source.slice(match.index + match[0].length);
       } else {
         result += source, source = '';
@@ -218,18 +222,28 @@ Object.extend(String.prototype, {
   unescapeHTML: function() {
     var div = document.createElement('div');
     div.innerHTML = this.stripTags();
-    return div.childNodes[0] ? div.childNodes[0].nodeValue : '';
+    return div.childNodes[0] ? (div.childNodes.length > 1 ?
+      $A(div.childNodes).inject('',function(memo,node){ return memo+node.nodeValue }) :
+      div.childNodes[0].nodeValue) : '';
   },
 
-  toQueryParams: function() {
-    var match = this.strip().match(/[^?]*$/)[0];
+  toQueryParams: function(separator) {
+    var match = this.strip().match(/([^?#]*)(#.*)?$/);
     if (!match) return {};
-    var pairs = match.split('&');
-    return pairs.inject({}, function(params, pairString) {
-      var pair  = pairString.split('=');
-      var value = pair[1] ? decodeURIComponent(pair[1]) : undefined;
-      params[decodeURIComponent(pair[0])] = value;
-      return params;
+
+    return match[1].split(separator || '&').inject({}, function(hash, pair) {
+      if ((pair = pair.split('='))[0]) {
+        var name = decodeURIComponent(pair[0]);
+        var value = pair[1] ? decodeURIComponent(pair[1]) : undefined;
+
+        if (hash[name] !== undefined) {
+          if (hash[name].constructor != Array)
+            hash[name] = [hash[name]];
+          if (value) hash[name].push(value);
+        }
+        else hash[name] = value;
+      }
+      return hash;
     });
   },
 
@@ -237,20 +251,35 @@ Object.extend(String.prototype, {
     return this.split('');
   },
 
+  succ: function() {
+    return this.slice(0, this.length - 1) +
+      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
+  },
+
   camelize: function() {
-    var oStringList = this.split('-');
-    if (oStringList.length == 1) return oStringList[0];
+    var parts = this.split('-'), len = parts.length;
+    if (len == 1) return parts[0];
 
-    var camelizedString = this.indexOf('-') == 0
-      ? oStringList[0].charAt(0).toUpperCase() + oStringList[0].substring(1)
-      : oStringList[0];
+    var camelized = this.charAt(0) == '-'
+      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
+      : parts[0];
 
-    for (var i = 1, length = oStringList.length; i < length; i++) {
-      var s = oStringList[i];
-      camelizedString += s.charAt(0).toUpperCase() + s.substring(1);
-    }
+    for (var i = 1; i < len; i++)
+      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);
+
+    return camelized;
+  },
+
+  capitalize: function(){
+    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
+  },
 
-    return camelizedString;
+  underscore: function() {
+    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
+  },
+
+  dasherize: function() {
+    return this.gsub(/_/,'-');
   },
 
   inspect: function(useDoubleQuotes) {
@@ -282,7 +311,7 @@ Template.prototype = {
     return this.template.gsub(this.pattern, function(match) {
       var before = match[1];
       if (before == '\\') return match[2];
-      return before + (object[match[3]] || '').toString();
+      return before + String.interpret(object[match[3]]);
     });
   }
 }
@@ -311,7 +340,7 @@ var Enumerable = {
     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);
+    return slices.map(iterator);
   },
 
   all: function(iterator) {
@@ -335,7 +364,7 @@ var Enumerable = {
   collect: function(iterator) {
     var results = [];
     this.each(function(value, index) {
-      results.push(iterator(value, index));
+      results.push((iterator || Prototype.K)(value, index));
     });
     return results;
   },
@@ -382,12 +411,11 @@ var Enumerable = {
   },
 
   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)
+    fillWith = fillWith === undefined ? null : fillWith;
+    return this.eachSlice(number, function(slice) {
+      while(slice.length < number) slice.push(fillWith);
+      return slice;
     });
-    return results;
   },
 
   inject: function(memo, iterator) {
@@ -399,7 +427,7 @@ var Enumerable = {
 
   invoke: function(method) {
     var args = $A(arguments).slice(1);
-    return this.collect(function(value) {
+    return this.map(function(value) {
       return value[method].apply(value, args);
     });
   },
@@ -451,7 +479,7 @@ var Enumerable = {
   },
 
   sortBy: function(iterator) {
-    return this.collect(function(value, index) {
+    return this.map(function(value, index) {
       return {value: value, criteria: iterator(value, index)};
     }).sort(function(left, right) {
       var a = left.criteria, b = right.criteria;
@@ -460,7 +488,7 @@ var Enumerable = {
   },
 
   toArray: function() {
-    return this.collect(Prototype.K);
+    return this.map();
   },
 
   zip: function() {
@@ -474,6 +502,10 @@ var Enumerable = {
     });
   },
 
+  size: function() {
+    return this.toArray().length;
+  },
+
   inspect: function() {
     return '#<Enumerable:' + this.toArray().inspect() + '>';
   }
@@ -524,7 +556,7 @@ Object.extend(Array.prototype, {
 
   compact: function() {
     return this.select(function(value) {
-      return value != undefined || value != null;
+      return value != null;
     });
   },
 
@@ -566,17 +598,74 @@ Object.extend(Array.prototype, {
     return [].concat(this);
   },
 
+  size: function() {
+    return this.length;
+  },
+
   inspect: function() {
     return '[' + this.map(Object.inspect).join(', ') + ']';
   }
 });
 
 Array.prototype.toArray = Array.prototype.clone;
-var Hash = {
+
+function $w(string){
+  string = string.strip();
+  return string ? string.split(/\s+/) : [];
+}
+
+if(window.opera){
+  Array.prototype.concat = function(){
+    var array = [];
+    for(var i = 0, length = this.length; i < length; i++) array.push(this[i]);
+    for(var i = 0, length = arguments.length; i < length; i++) {
+      if(arguments[i].constructor == Array) {
+        for(var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
+          array.push(arguments[i][j]);
+      } else {
+        array.push(arguments[i]);
+      }
+    }
+    return array;
+  }
+}
+var Hash = function(obj) {
+  Object.extend(this, obj || {});
+};
+
+Object.extend(Hash, {
+  toQueryString: function(obj) {
+    var parts = [];
+
+	  this.prototype._each.call(obj, function(pair) {
+      if (!pair.key) return;
+
+      if (pair.value && pair.value.constructor == Array) {
+        var values = pair.value.compact();
+        if (values.length < 2) pair.value = values.reduce();
+        else {
+        	key = encodeURIComponent(pair.key);
+          values.each(function(value) {
+            value = value != undefined ? encodeURIComponent(value) : '';
+            parts.push(key + '=' + encodeURIComponent(value));
+          });
+          return;
+        }
+      }
+      if (pair.value == undefined) pair[1] = '';
+      parts.push(pair.map(encodeURIComponent).join('='));
+	  });
+
+    return parts.join('&');
+  }
+});
+
+Object.extend(Hash.prototype, Enumerable);
+Object.extend(Hash.prototype, {
   _each: function(iterator) {
     for (var key in this) {
       var value = this[key];
-      if (typeof value == 'function') continue;
+      if (value && value == Hash.prototype[key]) continue;
 
       var pair = [key, value];
       pair.key = key;
@@ -600,12 +689,24 @@ var Hash = {
     });
   },
 
+  remove: function() {
+    var result;
+    for(var i = 0, length = arguments.length; i < length; i++) {
+      var value = this[arguments[i]];
+      if (value !== undefined){
+        if (result === undefined) result = value;
+        else {
+          if (result.constructor != Array) result = [result];
+          result.push(value)
+        }
+      }
+      delete this[arguments[i]];
+    }
+    return result;
+  },
+
   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('&');
+    return Hash.toQueryString(this);
   },
 
   inspect: function() {
@@ -613,14 +714,12 @@ var Hash = {
       return pair.map(Object.inspect).join(': ');
     }).join(', ') + '}>';
   }
-}
+});
 
 function $H(object) {
-  var hash = Object.extend({}, object || {});
-  Object.extend(hash, Enumerable);
-  Object.extend(hash, Hash);
-  return hash;
-}
+  if (object && object.constructor == Hash) return object;
+  return new Hash(object);
+};
 ObjectRange = Class.create();
 Object.extend(ObjectRange.prototype, Enumerable);
 Object.extend(ObjectRange.prototype, {
@@ -714,8 +813,8 @@ Ajax.Base.prototype = {
     Object.extend(this.options, options || {});
 
     this.options.method = this.options.method.toLowerCase();
-    this.options.parameters = $H(typeof this.options.parameters == 'string' ?
-      this.options.parameters.toQueryParams() : this.options.parameters);
+    if (typeof this.options.parameters == 'string')
+      this.options.parameters = this.options.parameters.toQueryParams();
   }
 }
 
@@ -724,6 +823,8 @@ Ajax.Request.Events =
   ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
 
 Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
+  _complete: false,
+
   initialize: function(url, options) {
     this.transport = Ajax.getTransport();
     this.setOptions(options);
@@ -731,28 +832,28 @@ Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
   },
 
   request: function(url) {
+    this.url = url;
+    this.method = this.options.method;
     var params = this.options.parameters;
-    if (params.any()) params['_'] = '';
 
-    if (!['get', 'post'].include(this.options.method)) {
+    if (!['get', 'post'].include(this.method)) {
       // simulate other verbs over post
-      params['_method'] = this.options.method;
-      this.options.method = 'post';
+      params['_method'] = this.method;
+      this.method = 'post';
     }
 
-    this.url = url;
+    params = Hash.toQueryString(params);
+    if (params && /Konqueror|Safari|KHTML/.test(navigator.userAgent)) params += '&_='
 
     // when GET, append parameters to URL
-    if (this.options.method == 'get' && params.any())
-      this.url += (this.url.indexOf('?') >= 0 ? '&' : '?') +
-        params.toQueryString();
+    if (this.method == 'get' && params)
+      this.url += (this.url.indexOf('?') > -1 ? '&' : '?') + params;
 
     try {
       Ajax.Responders.dispatch('onCreate', this, this.transport);
 
-      this.transport.open(this.options.method.toUpperCase(), this.url,
-        this.options.asynchronous, this.options.username,
-        this.options.password);
+      this.transport.open(this.method.toUpperCase(), this.url,
+        this.options.asynchronous);
 
       if (this.options.asynchronous)
         setTimeout(function() { this.respondToReadyState(1) }.bind(this), 10);
@@ -760,14 +861,14 @@ Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
       this.transport.onreadystatechange = this.onStateChange.bind(this);
       this.setRequestHeaders();
 
-      var body = this.options.method == 'post' ?
-        (this.options.postBody || params.toQueryString()) : null;
+      var body = this.method == 'post' ? (this.options.postBody || params) : null;
 
       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);
@@ -776,7 +877,7 @@ Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
 
   onStateChange: function() {
     var readyState = this.transport.readyState;
-    if (readyState > 1)
+    if (readyState > 1 && !((readyState == 4) && this._complete))
       this.respondToReadyState(this.transport.readyState);
   },
 
@@ -787,7 +888,7 @@ Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
       'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
     };
 
-    if (this.options.method == 'post') {
+    if (this.method == 'post') {
       headers['Content-type'] = this.options.contentType +
         (this.options.encoding ? '; charset=' + this.options.encoding : '');
 
@@ -805,7 +906,7 @@ Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
       var extras = this.options.requestHeaders;
 
       if (typeof extras.push == 'function')
-        for (var i = 0; i < extras.length; i += 2)
+        for (var i = 0, length = extras.length; i < length; i += 2)
           headers[extras[i]] = extras[i+1];
       else
         $H(extras).each(function(pair) { headers[pair.key] = pair.value });
@@ -826,12 +927,17 @@ Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
 
     if (state == 'Complete') {
       try {
+        this._complete = true;
         (this.options['on' + this.transport.status]
          || this.options['on' + (this.success() ? 'Success' : 'Failure')]
          || Prototype.emptyFunction)(transport, json);
       } catch (e) {
         this.dispatchException(e);
       }
+
+      if ((this.getHeader('Content-type') || 'text/javascript').strip().
+        match(/^(text|application)\/(x-)?(java|ecma)script(;.*)?$/i))
+          this.evalResponse();
     }
 
     try {
@@ -842,10 +948,6 @@ Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
     }
 
     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;
     }
@@ -977,10 +1079,10 @@ if (Prototype.BrowserFeatures.XPath) {
     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++)
+    for (var i = 0, length = query.snapshotLength; i < length; i++)
       results.push(query.snapshotItem(i));
     return results;
-  }
+  };
 }
 
 document.getElementsByClassName = function(className, parentElement) {
@@ -997,7 +1099,7 @@ document.getElementsByClassName = function(className, parentElement) {
     }
     return elements;
   }
-}
+};
 
 /*--------------------------------------------------------------------------*/
 
@@ -1005,8 +1107,7 @@ if (!window.Element)
   var Element = new Object();
 
 Element.extend = function(element) {
-  if (!element) return;
-  if (_nativeExtensions || element.nodeType == 3) return element;
+  if (!element || _nativeExtensions || element.nodeType == 3) return element;
 
   if (!element._extended && element.tagName && element != window) {
     var methods = Object.clone(Element.Methods), cache = Element.extend.cache;
@@ -1016,23 +1117,18 @@ Element.extend = function(element) {
     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);
-    }
+    Object.extend(methods, Element.Methods.Simulated);
 
-    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))
+      if (typeof value == 'function' && !(property in element))
         element[property] = cache.findOrStore(value);
     }
   }
 
   element._extended = true;
   return element;
-}
+};
 
 Element.extend.cache = {
   findOrStore: function(value) {
@@ -1040,7 +1136,7 @@ Element.extend.cache = {
       return value.apply(null, [this].concat($A(arguments)));
     }
   }
-}
+};
 
 Element.Methods = {
   visible: function(element) {
@@ -1078,6 +1174,7 @@ Element.Methods = {
 
   replace: function(element, html) {
     element = $(element);
+    html = typeof html == 'undefined' ? '' : html.toString();
     if (element.outerHTML) {
       element.outerHTML = html.stripScripts();
     } else {
@@ -1115,8 +1212,14 @@ Element.Methods = {
   },
 
   descendants: function(element) {
-    element = $(element);
-    return $A(element.getElementsByTagName('*'));
+    return $A($(element).getElementsByTagName('*'));
+  },
+
+  immediateDescendants: function(element) {
+    if (!(element = $(element).firstChild)) return [];
+    while (element && element.nodeType != 1) element = element.nextSibling;
+    if (element) return [element].concat($(element).nextSiblings());
+    return [];
   },
 
   previousSiblings: function(element) {
@@ -1133,10 +1236,9 @@ Element.Methods = {
   },
 
   match: function(element, selector) {
-    element = $(element);
     if (typeof selector == 'string')
       selector = new Selector(selector);
-    return selector.match(element);
+    return selector.match($(element));
   },
 
   up: function(element, expression, index) {
@@ -1161,13 +1263,27 @@ Element.Methods = {
   },
 
   getElementsByClassName: function(element, className) {
-    element = $(element);
     return document.getElementsByClassName(className, element);
   },
 
-  getHeight: function(element) {
+  readAttribute: function(element, name) {
     element = $(element);
-    return element.offsetHeight;
+    if (document.all && !window.opera) {
+      var t = Element._attributeTranslations;
+      if (t.values[name]) return t.values[name](element, name);
+      if (t.names[name])  name = t.names[name];
+      var attribute = element.attributes[name];
+      if(attribute) return attribute.nodeValue;
+    }
+    return element.getAttribute(name);
+  },
+
+  getHeight: function(element) {
+    return $(element).getDimensions().height;
+  },
+
+  getWidth: function(element) {
+    return $(element).getDimensions().width;
   },
 
   classNames: function(element) {
@@ -1196,6 +1312,12 @@ Element.Methods = {
     return element;
   },
 
+  toggleClassName: function(element, className) {
+    if (!(element = $(element))) return;
+    Element.classNames(element)[element.hasClassName(className) ? 'remove' : 'add'](className);
+    return element;
+  },
+
   observe: function() {
     Event.observe.apply(Event, arguments);
     return $A(arguments).first();
@@ -1223,7 +1345,7 @@ Element.Methods = {
     return $(element).innerHTML.match(/^\s*$/);
   },
 
-  childOf: function(element, ancestor) {
+  descendantOf: function(element, ancestor) {
     element = $(element), ancestor = $(ancestor);
     while (element = element.parentNode)
       if (element == ancestor) return true;
@@ -1232,40 +1354,69 @@ Element.Methods = {
 
   scrollTo: function(element) {
     element = $(element);
-    var x = element.x ? element.x : element.offsetLeft,
-        y = element.y ? element.y : element.offsetTop;
-    window.scrollTo(x, y);
+    var pos = Position.cumulativeOffset(element);
+    window.scrollTo(pos[0], pos[1]);
     return element;
   },
 
   getStyle: function(element, style) {
     element = $(element);
-    var value = element.style[style.camelize()];
+    if (['float','cssFloat'].include(style))
+      style = (typeof element.style.styleFloat != 'undefined' ? 'styleFloat' : 'cssFloat');
+    style = style.camelize();
+    var value = element.style[style];
     if (!value) {
       if (document.defaultView && document.defaultView.getComputedStyle) {
         var css = document.defaultView.getComputedStyle(element, null);
-        value = css ? css.getPropertyValue(style) : null;
+        value = css ? css[style] : null;
       } else if (element.currentStyle) {
-        value = element.currentStyle[style.camelize()];
+        value = element.currentStyle[style];
       }
     }
 
+    if((value == 'auto') && ['width','height'].include(style) && (element.getStyle('display') != 'none'))
+      value = element['offset'+style.capitalize()] + 'px';
+
     if (window.opera && ['left', 'top', 'right', 'bottom'].include(style))
       if (Element.getStyle(element, 'position') == 'static') value = 'auto';
-
+    if(style == 'opacity') {
+      if(value) return parseFloat(value);
+      if(value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
+        if(value[1]) return parseFloat(value[1]) / 100;
+      return 1.0;
+    }
     return value == 'auto' ? null : value;
   },
 
   setStyle: function(element, style) {
     element = $(element);
-    for (var name in style)
-      element.style[name.camelize()] = style[name];
+    for (var name in style) {
+      var value = style[name];
+      if(name == 'opacity') {
+        if (value == 1) {
+          value = (/Gecko/.test(navigator.userAgent) &&
+            !/Konqueror|Safari|KHTML/.test(navigator.userAgent)) ? 0.999999 : 1.0;
+          if(/MSIE/.test(navigator.userAgent) && !window.opera)
+            element.style.filter = element.getStyle('filter').replace(/alpha\([^\)]*\)/gi,'');
+        } else if(value == '') {
+          if(/MSIE/.test(navigator.userAgent) && !window.opera)
+            element.style.filter = element.getStyle('filter').replace(/alpha\([^\)]*\)/gi,'');
+        } else {
+          if(value < 0.00001) value = 0;
+          if(/MSIE/.test(navigator.userAgent) && !window.opera)
+            element.style.filter = element.getStyle('filter').replace(/alpha\([^\)]*\)/gi,'') +
+              'alpha(opacity='+value*100+')';
+        }
+      } else if(['float','cssFloat'].include(name)) name = (typeof element.style.styleFloat != 'undefined') ? 'styleFloat' : 'cssFloat';
+      element.style[name.camelize()] = value;
+    }
     return element;
   },
 
   getDimensions: function(element) {
     element = $(element);
-    if (Element.getStyle(element, 'display') != 'none')
+    var display = $(element).getStyle('display');
+    if (display != 'none' && display != null) // Safari bug
       return {width: element.offsetWidth, height: element.offsetHeight};
 
     // All *Width and *Height properties give 0 on elements with display none,
@@ -1273,12 +1424,13 @@ Element.Methods = {
     var els = element.style;
     var originalVisibility = els.visibility;
     var originalPosition = els.position;
+    var originalDisplay = els.display;
     els.visibility = 'hidden';
     els.position = 'absolute';
-    els.display = '';
+    els.display = 'block';
     var originalWidth = element.clientWidth;
     var originalHeight = element.clientHeight;
-    els.display = 'none';
+    els.display = originalDisplay;
     els.position = originalPosition;
     els.visibility = originalVisibility;
     return {width: originalWidth, height: originalHeight};
@@ -1329,21 +1481,68 @@ Element.Methods = {
     element._overflow = null;
     return element;
   }
-}
+};
+
+Object.extend(Element.Methods, {childOf: Element.Methods.descendantOf});
+
+Element._attributeTranslations = {};
+
+Element._attributeTranslations.names = {
+  colspan:   "colSpan",
+  rowspan:   "rowSpan",
+  valign:    "vAlign",
+  datetime:  "dateTime",
+  accesskey: "accessKey",
+  tabindex:  "tabIndex",
+  enctype:   "encType",
+  maxlength: "maxLength",
+  readonly:  "readOnly",
+  longdesc:  "longDesc"
+};
+
+Element._attributeTranslations.values = {
+  _getAttr: function(element, attribute) {
+    return element.getAttribute(attribute, 2);
+  },
+
+  _flag: function(element, attribute) {
+    return $(element).hasAttribute(attribute) ? attribute : null;
+  },
+
+  style: function(element) {
+    return element.style.cssText.toLowerCase();
+  },
+
+  title: function(element) {
+    var node = element.getAttributeNode('title');
+    return node.specified ? node.nodeValue : null;
+  }
+};
+
+Object.extend(Element._attributeTranslations.values, {
+  href: Element._attributeTranslations.values._getAttr,
+  src:  Element._attributeTranslations.values._getAttr,
+  disabled: Element._attributeTranslations.values._flag,
+  checked:  Element._attributeTranslations.values._flag,
+  readonly: Element._attributeTranslations.values._flag,
+  multiple: Element._attributeTranslations.values._flag
+});
 
 Element.Methods.Simulated = {
   hasAttribute: function(element, attribute) {
+    var t = Element._attributeTranslations;
+    attribute = t.names[attribute] || attribute;
     return $(element).getAttributeNode(attribute).specified;
   }
-}
+};
 
 // IE is missing .innerHTML support for TABLE-related elements
-if(document.all){
+if (document.all && !window.opera){
   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) {
+    if (['THEAD','TBODY','TR','TD'].include(tagName)) {
       var div = document.createElement('div');
       switch (tagName) {
         case 'THEAD':
@@ -1372,7 +1571,7 @@ if(document.all){
     setTimeout(function() {html.evalScripts()}, 10);
     return element;
   }
-}
+};
 
 Object.extend(Element, Element.Methods);
 
@@ -1428,8 +1627,8 @@ Abstract.Insertion.prototype = {
       try {
         this.element.insertAdjacentHTML(this.adjacency, this.content);
       } catch (e) {
-        var tagName = this.element.tagName.toLowerCase();
-        if (tagName == 'tbody' || tagName == 'tr') {
+        var tagName = this.element.tagName.toUpperCase();
+        if (['TBODY', 'TR'].include(tagName)) {
           this.insertContent(this.contentFromAnonymousTable());
         } else {
           throw e;
@@ -1539,7 +1738,7 @@ Element.ClassNames.prototype = {
   toString: function() {
     return $A(this).join(' ');
   }
-}
+};
 
 Object.extend(Element.ClassNames.prototype, Enumerable);
 var Selector = Class.create();
@@ -1586,15 +1785,15 @@ Selector.prototype = {
     if (params.wildcard)
       conditions.push('true');
     if (clause = params.id)
-      conditions.push('element.id == ' + clause.inspect());
+      conditions.push('element.readAttribute("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() + ')');
+      for (var i = 0, length = clause.length; i < length; i++)
+        conditions.push('element.hasClassName(' + clause[i].inspect() + ')');
     if (clause = params.attributes) {
       clause.each(function(attribute) {
-        var value = 'element.getAttribute(' + attribute.name.inspect() + ')';
+        var value = 'element.readAttribute(' + attribute.name.inspect() + ')';
         var splitValueBy = function(delimiter) {
           return value + ' && ' + value + '.split(' + delimiter.inspect() + ')';
         }
@@ -1607,7 +1806,7 @@ Selector.prototype = {
                           ); break;
           case '!=':      conditions.push(value + ' != ' + attribute.value.inspect()); break;
           case '':
-          case undefined: conditions.push(value + ' != null'); break;
+          case undefined: conditions.push('element.hasAttribute(' + attribute.name.inspect() + ')'); break;
           default:        throw 'Unknown operator ' + attribute.operator + ' in selector';
         }
       });
@@ -1618,6 +1817,7 @@ Selector.prototype = {
 
   compileMatcher: function() {
     this.match = new Function('element', 'if (!element.tagName) return false; \
+      element = $(element); \
       return ' + this.buildMatchExpression());
   },
 
@@ -1647,7 +1847,7 @@ Selector.prototype = {
 Object.extend(Selector, {
   matchElements: function(elements, expression) {
     var selector = new Selector(expression);
-    return elements.select(selector.match.bind(selector)).collect(Element.extend);
+    return elements.select(selector.match.bind(selector)).map(Element.extend);
   },
 
   findElement: function(elements, expression, index) {
@@ -1657,7 +1857,7 @@ Object.extend(Selector, {
 
   findChildElements: function(element, expressions) {
     return expressions.map(function(expression) {
-      return expression.strip().split(/\s+/).inject([null], function(results, expr) {
+      return expression.match(/[^\s"]+(?:"[^"]*"[^\s"]+)*/g).inject([null], function(results, expr) {
         var selector = new Selector(expr);
         return results.inject([], function(elements, result) {
           return elements.concat(selector.findElements(result || element));
@@ -1676,18 +1876,28 @@ var Form = {
     return form;
   },
 
-  serializeElements: function(elements) {
-    return elements.inject([], function(queryComponents, element) {
-      var queryComponent = Form.Element.serialize(element);
-      if (queryComponent) queryComponents.push(queryComponent);
-      return queryComponents;
-    }).join('&');
+  serializeElements: function(elements, getHash) {
+    var data = elements.inject({}, function(result, element) {
+      if (!element.disabled && element.name) {
+        var key = element.name, value = $(element).getValue();
+        if (value != undefined) {
+          if (result[key]) {
+            if (result[key].constructor != Array) result[key] = [result[key]];
+            result[key].push(value);
+          }
+          else result[key] = value;
+        }
+      }
+      return result;
+    });
+
+    return getHash ? data : Hash.toQueryString(data);
   }
 };
 
 Form.Methods = {
-  serialize: function(form) {
-    return Form.serializeElements($(form).getElements());
+  serialize: function(form, getHash) {
+    return Form.serializeElements(Form.getElements(form), getHash);
   },
 
   getElements: function(form) {
@@ -1704,14 +1914,11 @@ Form.Methods = {
     form = $(form);
     var inputs = form.getElementsByTagName('input');
 
-    if (!typeName && !name)
-      return inputs;
+    if (!typeName && !name) return $A(inputs).map(Element.extend);
 
-    var matchingInputs = new Array();
-    for (var i = 0, length = inputs.length; i < length; i++) {
+    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
       var input = inputs[i];
-      if ((typeName && input.type != typeName) ||
-          (name && input.name != name))
+      if ((typeName && input.type != typeName) || (name && input.name != name))
         continue;
       matchingInputs.push(Element.extend(input));
     }
@@ -1769,30 +1976,21 @@ 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);
-
-    if (parameter) {
-      var key = encodeURIComponent(parameter[0]);
-      if (key.length == 0) return;
-
-      if (parameter[1].constructor != Array)
-        parameter[1] = [parameter[1]];
-
-      return parameter[1].map(function(value) {
-        return key + '=' + encodeURIComponent(value);
-      }).join('&');
+    if (!element.disabled && element.name) {
+      var value = element.getValue();
+      if (value != undefined) {
+        var pair = {};
+        pair[element.name] = value;
+        return Hash.toQueryString(pair);
+      }
     }
+    return '';
   },
 
   getValue: function(element) {
     element = $(element);
     var method = element.tagName.toLowerCase();
-    var parameter = Form.Element.Serializers[method](element);
-
-    if (parameter)
-      return parameter[1];
+    return Form.Element.Serializers[method](element);
   },
 
   clear: function(element) {
@@ -1807,7 +2005,8 @@ Form.Element.Methods = {
   activate: function(element) {
     element = $(element);
     element.focus();
-    if (element.select)
+    if (element.select && ( element.tagName.toLowerCase() != 'input' ||
+      !['button', 'reset', 'submit'].include(element.type) ) )
       element.select();
     return element;
   },
@@ -1828,6 +2027,7 @@ Form.Element.Methods = {
 
 Object.extend(Form.Element, Form.Element.Methods);
 var Field = Form.Element;
+var $F = Form.Element.getValue;
 
 /*--------------------------------------------------------------------------*/
 
@@ -1840,51 +2040,45 @@ Form.Element.Serializers = {
       default:
         return Form.Element.Serializers.textarea(element);
     }
-    return false;
   },
 
   inputSelector: function(element) {
-    if (element.checked)
-      return [element.name, element.value];
+    return element.checked ? element.value : null;
   },
 
   textarea: function(element) {
-    return [element.name, element.value];
+    return element.value;
   },
 
   select: function(element) {
-    return Form.Element.Serializers[element.type == 'select-one' ?
+    return this[element.type == 'select-one' ?
       'selectOne' : 'selectMany'](element);
   },
 
   selectOne: function(element) {
-    var value = '', opt, index = element.selectedIndex;
-    if (index >= 0) {
-      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];
+    var index = element.selectedIndex;
+    return index >= 0 ? this.optionValue(element.options[index]) : null;
   },
 
   selectMany: function(element) {
-    var value = [];
-    for (var i = 0; i < element.length; i++) {
-      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);
+    var values, length = element.length;
+    if (!length) return null;
+
+    for (var i = 0, values = []; i < length; i++) {
+      var opt = element.options[i];
+      if (opt.selected) values.push(this.optionValue(opt));
     }
-    return [element.name, value];
+    return values;
+  },
+
+  optionValue: function(opt) {
+    // extend element because hasAttribute may not be native
+    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
   }
 }
 
 /*--------------------------------------------------------------------------*/
 
-var $F = Form.Element.getValue;
-
-/*--------------------------------------------------------------------------*/
-
 Abstract.TimedObserver = function() {}
 Abstract.TimedObserver.prototype = {
   initialize: function(element, frequency, callback) {
@@ -1902,7 +2096,9 @@ Abstract.TimedObserver.prototype = {
 
   onTimerEvent: function() {
     var value = this.getValue();
-    if (this.lastValue != value) {
+    var changed = ('string' == typeof this.lastValue && 'string' == typeof value
+      ? this.lastValue != value : String(this.lastValue) != String(value));
+    if (changed) {
       this.callback(this.element, value);
       this.lastValue = value;
     }
@@ -2275,10 +2471,10 @@ var Position = {
     element._originalHeight = element.style.height;
 
     element.style.position = 'absolute';
-    element.style.top    = top + 'px';;
-    element.style.left   = left + 'px';;
-    element.style.width  = width + 'px';;
-    element.style.height = height + 'px';;
+    element.style.top    = top + 'px';
+    element.style.left   = left + 'px';
+    element.style.width  = width + 'px';
+    element.style.height = height + 'px';
   },
 
   relativize: function(element) {
-- 
2.39.5