From d291318f3eeebf752a0f72c2ea0c22127b946bb1 Mon Sep 17 00:00:00 2001
From: Jacques Distler <distler@golem.ph.utexas.edu>
Date: Tue, 13 Feb 2007 09:55:26 -0600
Subject: [PATCH] Sync with latest (2/13/2007) Instiki svn.

---
 app/controllers/application.rb                |    1 +
 config/boot.rb                                |   44 +-
 public/javascripts/application.js             |    2 +
 public/javascripts/controls.js                |  241 ++-
 public/javascripts/dragdrop.js                |  846 ++++++---
 public/javascripts/effects.js                 | 1267 +++++++------
 public/javascripts/prototype.js               | 1635 ++++++++++++-----
 script/about                                  |    3 +
 script/performance/benchmarker                |    3 +
 script/performance/profiler                   |    3 +
 script/plugin                                 |    3 +
 script/process/inspector                      |    3 +
 script/process/reaper                         |    3 +
 script/process/spawner                        |    3 +
 vendor/plugins/form_spam_protection/README    |   32 +
 vendor/plugins/form_spam_protection/Rakefile  |   22 +
 vendor/plugins/form_spam_protection/init.rb   |    4 +
 .../plugins/form_spam_protection/install.rb   |    1 +
 .../lib/form_spam_protection.rb               |   36 +
 .../lib/form_tag_helper_extensions.rb         |   56 +
 .../tasks/form_spam_protection_tasks.rake     |    4 +
 .../test/form_spam_protection_test.rb         |   39 +
 .../test/mocks/enkoder.rb                     |   14 +
 .../form_spam_protection/test/test_helper.rb  |   30 +
 .../plugins/form_spam_protection/uninstall.rb |    1 +
 .../vendor/enkoder/LICENSE                    |   27 +
 .../vendor/enkoder/README                     |   82 +
 .../vendor/enkoder/init.rb                    |    1 +
 .../vendor/enkoder/lib/enkoder.rb             |  144 ++
 29 files changed, 3212 insertions(+), 1338 deletions(-)
 create mode 100644 public/javascripts/application.js
 create mode 100755 script/about
 create mode 100755 script/performance/benchmarker
 create mode 100755 script/performance/profiler
 create mode 100755 script/plugin
 create mode 100755 script/process/inspector
 create mode 100755 script/process/reaper
 create mode 100755 script/process/spawner
 create mode 100644 vendor/plugins/form_spam_protection/README
 create mode 100644 vendor/plugins/form_spam_protection/Rakefile
 create mode 100644 vendor/plugins/form_spam_protection/init.rb
 create mode 100644 vendor/plugins/form_spam_protection/install.rb
 create mode 100644 vendor/plugins/form_spam_protection/lib/form_spam_protection.rb
 create mode 100644 vendor/plugins/form_spam_protection/lib/form_tag_helper_extensions.rb
 create mode 100644 vendor/plugins/form_spam_protection/tasks/form_spam_protection_tasks.rake
 create mode 100644 vendor/plugins/form_spam_protection/test/form_spam_protection_test.rb
 create mode 100644 vendor/plugins/form_spam_protection/test/mocks/enkoder.rb
 create mode 100644 vendor/plugins/form_spam_protection/test/test_helper.rb
 create mode 100644 vendor/plugins/form_spam_protection/uninstall.rb
 create mode 100644 vendor/plugins/form_spam_protection/vendor/enkoder/LICENSE
 create mode 100644 vendor/plugins/form_spam_protection/vendor/enkoder/README
 create mode 100644 vendor/plugins/form_spam_protection/vendor/enkoder/init.rb
 create mode 100644 vendor/plugins/form_spam_protection/vendor/enkoder/lib/enkoder.rb

diff --git a/app/controllers/application.rb b/app/controllers/application.rb
index 39f64023..9e192f64 100644
--- a/app/controllers/application.rb
+++ b/app/controllers/application.rb
@@ -2,6 +2,7 @@
 # Likewise will all the methods added be available for all controllers.
 class ApplicationController < ActionController::Base
 #  require 'dnsbl_check'
+#  protect_forms_from_spam
   before_filter :dnsbl_check, :connect_to_model, :check_authorization, :setup_url_generator, :set_content_type_header, :set_robots_metatag
   after_filter :remember_location, :teardown_url_generator
 
diff --git a/config/boot.rb b/config/boot.rb
index b829644d..1e2a6418 100644
--- a/config/boot.rb
+++ b/config/boot.rb
@@ -1,17 +1,45 @@
+# Don't change this file. Configuration is done in config/environment.rb and config/environments/*.rb
+
 unless defined?(RAILS_ROOT)
   root_path = File.join(File.dirname(__FILE__), '..')
+
   unless RUBY_PLATFORM =~ /mswin32/
     require 'pathname'
-    root_path = Pathname.new(root_path).cleanpath.to_s
+    root_path = Pathname.new(root_path).cleanpath(true).to_s
   end
+
   RAILS_ROOT = root_path
 end
 
-if File.directory?("#{RAILS_ROOT}/vendor/rails")
-  require "#{RAILS_ROOT}/vendor/rails/railties/lib/initializer"
-else
-  require 'rubygems'
-  require 'initializer'
-end
+unless defined?(Rails::Initializer)
+  if File.directory?("#{RAILS_ROOT}/vendor/rails")
+    require "#{RAILS_ROOT}/vendor/rails/railties/lib/initializer"
+  else
+    require 'rubygems'
 
-Rails::Initializer.run(:set_load_path)
\ No newline at end of file
+    environment_without_comments = IO.readlines(File.dirname(__FILE__) + '/environment.rb').reject { |l| l =~ /^#/ }.join
+    environment_without_comments =~ /[^#]RAILS_GEM_VERSION = '([\d.]+)'/
+    rails_gem_version = $1
+
+    if version = defined?(RAILS_GEM_VERSION) ? RAILS_GEM_VERSION : rails_gem_version
+      # Asking for 1.1.6 will give you 1.1.6.5206, if available -- makes it easier to use beta gems
+      rails_gem = Gem.cache.search('rails', "~>#{version}.0").sort_by { |g| g.version.version }.last
+
+      if rails_gem
+        gem "rails", "=#{rails_gem.version.version}"
+        require rails_gem.full_gem_path + '/lib/initializer'
+      else
+        STDERR.puts %(Cannot find gem for Rails ~>#{version}.0:
+    Install the missing gem with 'gem install -v=#{version} rails', or
+    change environment.rb to define RAILS_GEM_VERSION with your desired version.
+  )
+        exit 1
+      end
+    else
+      gem "rails"
+      require 'initializer'
+    end
+  end
+
+  Rails::Initializer.run(:set_load_path)
+end
\ No newline at end of file
diff --git a/public/javascripts/application.js b/public/javascripts/application.js
new file mode 100644
index 00000000..fe457769
--- /dev/null
+++ b/public/javascripts/application.js
@@ -0,0 +1,2 @@
+// Place your application-specific JavaScript functions and classes here
+// This file is automatically included by javascript_include_tag :defaults
diff --git a/public/javascripts/controls.js b/public/javascripts/controls.js
index a7436bcf..8c273f87 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;
@@ -80,7 +87,10 @@ Autocompleter.Base.prototype = {
 
   show: function() {
     if(Element.getStyle(this.update, 'display')=='none') this.options.onShow(this.element, this.update);
-    if(!this.iefix && (navigator.appVersion.indexOf('MSIE')>0) && (Element.getStyle(this.update, 'position')=='absolute')) {
+    if(!this.iefix && 
+      (navigator.appVersion.indexOf('MSIE')>0) &&
+      (navigator.userAgent.indexOf('Opera')<0) &&
+      (Element.getStyle(this.update, 'position')=='absolute')) {
       new Insertion.After(this.update, 
        '<iframe id="' + this.update.id + '_iefix" '+
        'style="display:none;position:absolute;filter:progid:DXImageTransform.Microsoft.Alpha(opacity=0);" ' +
@@ -91,7 +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);
@@ -138,8 +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;
@@ -149,6 +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) 
@@ -184,17 +200,22 @@ Autocompleter.Base.prototype = {
         this.show();
         this.active = true;
       }
-    } else this.hide();
+    } else {
+      this.active = false;
+      this.hide();
+    }
   },
   
   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) {
@@ -215,8 +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);
@@ -237,11 +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;
@@ -252,9 +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();
+      }
     }
   },
 
@@ -299,7 +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;
@@ -425,6 +456,15 @@ Autocompleter.Local.prototype = Object.extend(new Autocompleter.Base(), {
 //
 // see documentation on http://wiki.script.aculo.us/scriptaculous/show/Ajax.InPlaceEditor
 
+// Use this if you notice weird scrolling problems on some browsers,
+// the DOM might be a bit confused when this gets called so do this
+// waits 1 ms (with setTimeout) until it does the activation
+Field.scrollFreeActivate = function(field) {
+  setTimeout(function() {
+    Field.activate(field);
+  }, 1);
+}
+
 Ajax.InPlaceEditor = Class.create();
 Ajax.InPlaceEditor.defaultHighlightColor = "#FFFF99";
 Ajax.InPlaceEditor.prototype = {
@@ -433,7 +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",
@@ -455,8 +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) {
@@ -490,7 +535,7 @@ Ajax.InPlaceEditor.prototype = {
       Event.observe(this.options.externalControl, 'mouseout', this.mouseoutListener);
     }
   },
-  enterEditMode: function() {
+  enterEditMode: function(evt) {
     if (this.saving) return;
     if (this.editing) return;
     this.editing = true;
@@ -501,11 +546,12 @@ Ajax.InPlaceEditor.prototype = {
     Element.hide(this.element);
     this.createForm();
     this.element.parentNode.insertBefore(this.form, this.element);
-    Field.focus(this.editField);
+    if (!this.options.loadTextURL) Field.scrollFreeActivate(this.editField);
     // stop the event to avoid a page refresh in Safari
-    if (arguments.length > 1) {
-      Event.stop(arguments[0]);
+    if (evt) {
+      Event.stop(evt);
     }
+    return false;
   },
   createForm: function() {
     this.form = document.createElement("form");
@@ -520,16 +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;
@@ -545,24 +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;
     }
     
@@ -589,6 +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();
@@ -613,19 +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]);
@@ -705,4 +775,59 @@ Ajax.InPlaceEditor.prototype = {
       Event.stopObserving(this.options.externalControl, 'mouseout', this.mouseoutListener);
     }
   }
-};
\ No newline at end of file
+};
+
+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
+
+Form.Element.DelayedObserver = Class.create();
+Form.Element.DelayedObserver.prototype = {
+  initialize: function(element, delay, callback) {
+    this.delay     = delay || 0.5;
+    this.element   = $(element);
+    this.callback  = callback;
+    this.timer     = null;
+    this.lastValue = $F(this.element); 
+    Event.observe(this.element,'keyup',this.delayedListener.bindAsEventListener(this));
+  },
+  delayedListener: function(event) {
+    if(this.lastValue == $F(this.element)) return;
+    if(this.timer) clearTimeout(this.timer);
+    this.timer = setTimeout(this.onTimerEvent.bind(this), this.delay * 1000);
+    this.lastValue = $F(this.element);
+  },
+  onTimerEvent: function() {
+    this.timer = null;
+    this.callback(this.element, $F(this.element));
+  }
+};
diff --git a/public/javascripts/dragdrop.js b/public/javascripts/dragdrop.js
index 5445d748..c71ddb82 100644
--- a/public/javascripts/dragdrop.js
+++ b/public/javascripts/dragdrop.js
@@ -1,23 +1,25 @@
-// 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)
 // 
-// Element.Class part Copyright (c) 2005 by Rick Olson
-// 
-// 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: [],
 
   remove: function(element) {
-    this.drops = this.drops.reject(function(d) { return d.element==element });
+    this.drops = this.drops.reject(function(d) { return d.element==$(element) });
   },
 
   add: function(element) {
     element = $(element);
     var options = Object.extend({
       greedy:     true,
-      hoverclass: null  
+      hoverclass: null,
+      tree:       false
     }, arguments[1] || {});
 
     // cache containers
@@ -31,67 +33,83 @@ var Droppables = {
         options._containers.push($(containment));
       }
     }
+    
+    if(options.accept) options.accept = [options.accept].flatten();
 
     Element.makePositioned(element); // fix IE
     options.element = element;
 
     this.drops.push(options);
   },
-
-  isContained: function(element, drop) {
-    var parentNode = element.parentNode;
-    return drop._containers.detect(function(c) { return parentNode == c });
+  
+  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;
   },
 
-  isAffected: function(pX, pY, element, drop) {
+  isContained: function(element, drop) {
+    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) &&
       ((!drop._containers) ||
         this.isContained(element, drop)) &&
       ((!drop.accept) ||
-        (Element.Class.has_any(element, drop.accept))) &&
-      Position.within(drop.element, pX, pY) );
+        (Element.classNames(element).detect( 
+          function(v) { return drop.accept.include(v) } ) )) &&
+      Position.within(drop.element, point[0], point[1]) );
   },
 
   deactivate: function(drop) {
     if(drop.hoverclass)
-      Element.Class.remove(drop.element, drop.hoverclass);
+      Element.removeClassName(drop.element, drop.hoverclass);
     this.last_active = null;
   },
 
   activate: function(drop) {
-    if(this.last_active) this.deactivate(this.last_active);
     if(drop.hoverclass)
-      Element.Class.add(drop.element, drop.hoverclass);
+      Element.addClassName(drop.element, drop.hoverclass);
     this.last_active = drop;
   },
 
-  show: function(event, element) {
+  show: function(point, element) {
     if(!this.drops.length) return;
-    var pX = Event.pointerX(event);
-    var pY = Event.pointerY(event);
-    Position.prepare();
-
-    var i = this.drops.length-1; do {
-      var drop = this.drops[i];
-      if(this.isAffected(pX, pY, element, drop)) {
-        if(drop.onHover)
-           drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));
-        if(drop.greedy) { 
-          this.activate(drop);
-          return;
-        }
-      }
-    } while (i--);
+    var affected = [];
     
     if(this.last_active) this.deactivate(this.last_active);
+    this.drops.each( function(drop) {
+      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) {
     if(!this.last_active) return;
     Position.prepare();
 
-    if (this.isAffected(Event.pointerX(event), Event.pointerY(event), element, this.last_active))
+    if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active))
       if (this.last_active.onDrop) 
         this.last_active.onDrop(element, this.last_active.element, event);
   },
@@ -103,113 +121,271 @@ var Droppables = {
 }
 
 var Draggables = {
+  drags: [],
   observers: [],
+  
+  register: function(draggable) {
+    if(this.drags.length == 0) {
+      this.eventMouseUp   = this.endDrag.bindAsEventListener(this);
+      this.eventMouseMove = this.updateDrag.bindAsEventListener(this);
+      this.eventKeypress  = this.keyPress.bindAsEventListener(this);
+      
+      Event.observe(document, "mouseup", this.eventMouseUp);
+      Event.observe(document, "mousemove", this.eventMouseMove);
+      Event.observe(document, "keypress", this.eventKeypress);
+    }
+    this.drags.push(draggable);
+  },
+  
+  unregister: function(draggable) {
+    this.drags = this.drags.reject(function(d) { return d==draggable });
+    if(this.drags.length == 0) {
+      Event.stopObserving(document, "mouseup", this.eventMouseUp);
+      Event.stopObserving(document, "mousemove", this.eventMouseMove);
+      Event.stopObserving(document, "keypress", this.eventKeypress);
+    }
+  },
+  
+  activate: function(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() {
+    this.activeDraggable = null;
+  },
+  
+  updateDrag: function(event) {
+    if(!this.activeDraggable) return;
+    var pointer = [Event.pointerX(event), Event.pointerY(event)];
+    // Mozilla-based browsers fire successive mousemove events with
+    // 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) {
+    if(this.activeDraggable)
+      this.activeDraggable.keyPress(event);
+  },
+  
   addObserver: function(observer) {
-    this.observers.push(observer);    
+    this.observers.push(observer);
+    this._cacheObserverCallbacks();
   },
-  removeObserver: function(element) {  // element instead of obsever fixes mem leaks
+  
+  removeObserver: function(element) {  // element instead of observer fixes mem leaks
     this.observers = this.observers.reject( function(o) { return o.element==element });
+    this._cacheObserverCallbacks();
   },
-  notify: function(eventName, draggable) {  // 'onStart', 'onEnd'
-    this.observers.invoke(eventName, draggable);
+  
+  notify: function(eventName, draggable, event) {  // 'onStart', 'onEnd', 'onDrag'
+    if(this[eventName+'Count'] > 0)
+      this.observers.each( function(o) {
+        if(o[eventName]) o[eventName](eventName, draggable, event);
+      });
+    if(draggable.options[eventName]) draggable.options[eventName](draggable, event);
+  },
+  
+  _cacheObserverCallbacks: function() {
+    ['onStart','onEnd','onDrag'].each( function(eventName) {
+      Draggables[eventName+'Count'] = Draggables.observers.select(
+        function(o) { return o[eventName]; }
+      ).length;
+    });
   }
 }
 
 /*--------------------------------------------------------------------------*/
 
 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;
-        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
-    }, arguments[1] || {});
+      revert: false,
+      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);
+    this.element = $(element);
+    
     if(options.handle && (typeof options.handle == 'string'))
-      this.handle = Element.Class.childrenWith(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    
 
-    this.offsetX      = 0;
-    this.offsetY      = 0;
-    this.originalLeft = this.currentLeft();
-    this.originalTop  = this.currentTop();
-    this.originalX    = this.element.offsetLeft;
-    this.originalY    = this.element.offsetTop;
+    this.delta    = this.currentDelta();
+    this.options  = options;
+    this.dragging = false;   
 
-    this.options      = options;
-
-    this.active       = false;
-    this.dragging     = false;   
-
-    this.eventMouseDown = this.startDrag.bindAsEventListener(this);
-    this.eventMouseUp   = this.endDrag.bindAsEventListener(this);
-    this.eventMouseMove = this.update.bindAsEventListener(this);
-    this.eventKeypress  = this.keyPress.bindAsEventListener(this);
+    this.eventMouseDown = this.initDrag.bindAsEventListener(this);
+    Event.observe(this.handle, "mousedown", this.eventMouseDown);
     
-    this.registerEvents();
+    Draggables.register(this);
   },
+  
   destroy: function() {
     Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);
-    this.unregisterEvents();
+    Draggables.unregister(this);
   },
-  registerEvents: function() {
-    Event.observe(document, "mouseup", this.eventMouseUp);
-    Event.observe(document, "mousemove", this.eventMouseMove);
-    Event.observe(document, "keypress", this.eventKeypress);
-    Event.observe(this.handle, "mousedown", this.eventMouseDown);
+  
+  currentDelta: function() {
+    return([
+      parseInt(Element.getStyle(this.element,'left') || '0'),
+      parseInt(Element.getStyle(this.element,'top') || '0')]);
   },
-  unregisterEvents: function() {
-    //if(!this.active) return;
-    //Event.stopObserving(document, "mouseup", this.eventMouseUp);
-    //Event.stopObserving(document, "mousemove", this.eventMouseMove);
-    //Event.stopObserving(document, "keypress", this.eventKeypress);
-  },
-  currentLeft: function() {
-    return parseInt(this.element.style.left || '0');
-  },
-  currentTop: function() {
-    return parseInt(this.element.style.top || '0')
-  },
-  startDrag: function(event) {
-    if(Event.isLeftClick(event)) {
-      
+  
+  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;
-      
-      // this.registerEvents();
-      this.active = true;
+        
       var pointer = [Event.pointerX(event), Event.pointerY(event)];
-      var offsets = Position.cumulativeOffset(this.element);
-      this.offsetX =  (pointer[0] - offsets[0]);
-      this.offsetY =  (pointer[1] - offsets[1]);
+      var pos     = Position.cumulativeOffset(this.element);
+      this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) });
+      
+      Draggables.activate(this);
       Event.stop(event);
     }
   },
+  
+  startDrag: function(event) {
+    this.dragging = true;
+    
+    if(this.options.zindex) {
+      this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0);
+      this.element.style.zIndex = this.options.zindex;
+    }
+    
+    if(this.options.ghosting) {
+      this._clone = this.element.cloneNode(true);
+      Position.absolutize(this.element);
+      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);
+  },
+  
+  updateDrag: function(event, pointer) {
+    if(!this.dragging) this.startDrag(event);
+    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);
+  },
+  
   finishDrag: function(event, success) {
-    // this.unregisterEvents();
-
-    this.active = false;
     this.dragging = false;
 
     if(this.options.ghosting) {
@@ -219,18 +395,17 @@ Draggable.prototype = {
     }
 
     if(success) Droppables.fire(event, this.element);
-    Draggables.notify('onEnd', this);
+    Draggables.notify('onEnd', this, event);
 
     var revert = this.options.revert;
     if(revert && typeof revert == 'function') revert = revert(this.element);
-
+    
+    var d = this.currentDelta();
     if(revert && this.options.reverteffect) {
       this.options.reverteffect(this.element, 
-      this.currentTop()-this.originalTop,
-      this.currentLeft()-this.originalLeft);
+        d[1]-this.delta[1], d[0]-this.delta[0]);
     } else {
-      this.originalLeft = this.currentLeft();
-      this.originalTop  = this.currentTop();
+      this.delta = d;
     }
 
     if(this.options.zindex)
@@ -238,71 +413,135 @@ Draggable.prototype = {
 
     if(this.options.endeffect) 
       this.options.endeffect(this.element);
-
-
+      
+    Draggables.deactivate(this);
     Droppables.reset();
   },
+  
   keyPress: function(event) {
-    if(this.active) {
-      if(event.keyCode==Event.KEY_ESC) {
-        this.finishDrag(event, false);
-        Event.stop(event);
-      }
-    }
+    if(event.keyCode!=Event.KEY_ESC) return;
+    this.finishDrag(event, false);
+    Event.stop(event);
   },
+  
   endDrag: function(event) {
-    if(this.active && this.dragging) {
-      this.finishDrag(event, true);
-      Event.stop(event);
-    }
-    this.active = false;
-    this.dragging = false;
+    if(!this.dragging) return;
+    this.stopScrolling();
+    this.finishDrag(event, true);
+    Event.stop(event);
   },
-  draw: function(event) {
-    var pointer = [Event.pointerX(event), Event.pointerY(event)];
-    var offsets = Position.cumulativeOffset(this.element);
-    offsets[0] -= this.currentLeft();
-    offsets[1] -= this.currentTop();
+  
+  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];
+    
+    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],this);
+      } else {
+      if(this.options.snap instanceof Array) {
+        p = p.map( function(v, i) {
+          return Math.round(v/this.options.snap[i])*this.options.snap[i] }.bind(this))
+      } else {
+        p = p.map( function(v) {
+          return Math.round(v/this.options.snap)*this.options.snap }.bind(this))
+      }
+    }}
+    
     var style = this.element.style;
     if((!this.options.constraint) || (this.options.constraint=='horizontal'))
-      style.left = (pointer[0] - offsets[0] - this.offsetX) + "px";
+      style.left = p[0] + "px";
     if((!this.options.constraint) || (this.options.constraint=='vertical'))
-      style.top  = (pointer[1] - offsets[1] - this.offsetY) + "px";
+      style.top  = p[1] + "px";
+    
     if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering
   },
-  update: function(event) {
-   if(this.active) {
-      if(!this.dragging) {
-        var style = this.element.style;
-        this.dragging = true;
-        
-        if(Element.getStyle(this.element,'position')=='') 
-          style.position = "relative";
-        
-        if(this.options.zindex) {
-          this.options.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0);
-          style.zIndex = this.options.zindex;
+  
+  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] );
         }
-
-        if(this.options.ghosting) {
-          this._clone = this.element.cloneNode(true);
-          Position.absolutize(this.element);
-          this.element.parentNode.insertBefore(this._clone, this.element);
-        }
-
-        Draggables.notify('onStart', this);
-        if(this.options.starteffect) this.options.starteffect(this.element);
       }
-
-      Droppables.show(event, this.element);
-      this.draw(event);
-      if(this.options.change) this.options.change(this);
-
-      // fix AppleWebKit rendering
-      if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0); 
-
-      Event.stop(event);
-   }
+    } 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 };
   }
 }
 
@@ -315,9 +554,11 @@ SortableObserver.prototype = {
     this.observer  = observer;
     this.lastValue = Sortable.serialize(this.element);
   },
+  
   onStart: function() {
     this.lastValue = Sortable.serialize(this.element);
   },
+  
   onEnd: function() {
     Sortable.unmark();
     if(this.lastValue != Sortable.serialize(this.element))
@@ -326,37 +567,57 @@ SortableObserver.prototype = {
 }
 
 var Sortable = {
-  sortables: new Array(),
-  options: function(element){
-    element = $(element);
-    return this.sortables.detect(function(s) { return s.element == element });
+  SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/,
+  
+  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,
-      onChange:    function() {},
-      onUpdate:    function() {}
+      scroll:      false,
+      scrollSensitivity: 20,
+      scrollSpeed: 15,
+      format:      this.SERIALIZE_RULE,
+      onChange:    Prototype.emptyFunction,
+      onUpdate:    Prototype.emptyFunction
     }, arguments[1] || {});
 
     // clear any old sortable with same element
@@ -365,6 +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 };
@@ -390,9 +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
@@ -401,27 +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.Class.childrenWith(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));
@@ -430,23 +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==options.tag.toUpperCase() &&
-        (!options.only || (Element.Class.has(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;
@@ -469,15 +745,42 @@ var Sortable = {
       }
     }
   },
-
-  onEmptyHover: function(element, dropon) {
-    if(element.parentNode!=dropon) {
-      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);
+      droponOptions.onChange(element);
     }
   },
 
   unmark: function() {
-    if(Sortable._marker) Element.hide(Sortable._marker);
+    if(Sortable._marker) Sortable._marker.hide();
   },
 
   mark: function(dropon, position) {
@@ -486,31 +789,154 @@ var Sortable = {
     if(sortable && !sortable.ghosting) return; 
 
     if(!Sortable._marker) {
-      Sortable._marker = $('dropmarker') || document.createElement('DIV');
-      Element.hide(Sortable._marker);
-      Element.Class.add(Sortable._marker, 'dropmarker');
-      Sortable._marker.style.position = 'absolute';
+      Sortable._marker = 
+        ($('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.top  = offsets[1] + 'px';
-    if(position=='after') Sortable._marker.style.top = (offsets[1]+dropon.clientHeight) + 'px';
-    Sortable._marker.style.left = offsets[0] + 'px';
-    Element.show(Sortable._marker);
+    Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'});
+    
+    if(position=='after')
+      if(sortable.overlap == 'horizontal') 
+        Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'});
+      else
+        Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'});
+    
+    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);
+
+      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; 
   },
 
-  serialize: function(element) {
+  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] || {});
-    return $(this.findElements(element, options) || []).collect( function(item) {
-      return (encodeURIComponent(options.name) + "[]=" + 
-              encodeURIComponent(item.id.match(options.format) ? item.id.match(options.format)[1] : ''));
-    }).join("&");
+    
+    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 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 7e65d922..3b02eda2 100644
--- a/public/javascripts/effects.js
+++ b/public/javascripts/effects.js
@@ -1,312 +1,122 @@
-// 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/ 
 
-Object.debug = function(obj) {
-  var info = [];
-  
-  if(typeof obj in ["string","number"]) {
-    return obj;
-  } else {
-    for(property in obj)
-      if(typeof obj[property]!="function")
-        info.push(property + ' => ' + 
-          (typeof obj[property] == "string" ?
-            '"' + obj[property] + '"' :
-            obj[property]));
-  }
-  
-  return ("'" + obj + "' #" + typeof obj + 
-    ": {" + info.join(", ") + "}");
+// converts rgb() and #xxx to #xxxxxx format,  
+// returns self (or first argument) if not convertable  
+String.prototype.parseColor = function() {  
+  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);  
+  } else {  
+    if(this.slice(0,1) == '#') {  
+      if(this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();  
+      if(this.length==7) color = this.toLowerCase();  
+    }  
+  }  
+  return(color.length==7 ? color : (arguments[0] || this));  
 }
 
-
 /*--------------------------------------------------------------------------*/
 
-var Builder = {
-  NODEMAP: {
-    AREA: 'map',
-    CAPTION: 'table',
-    COL: 'table',
-    COLGROUP: 'table',
-    LEGEND: 'fieldset',
-    OPTGROUP: 'select',
-    OPTION: 'select',
-    PARAM: 'object',
-    TBODY: 'table',
-    TD: 'table',
-    TFOOT: 'table',
-    TH: 'table',
-    THEAD: 'table',
-    TR: 'table'
-  },
-  // note: For Firefox < 1.5, OPTION and OPTGROUP tags are currently broken,
-  //       due to a Firefox bug
-  node: function(elementName) {
-    elementName = elementName.toUpperCase();
-    
-    // try innerHTML approach
-    var parentTag = this.NODEMAP[elementName] || 'div';
-    var parentElement = document.createElement(parentTag);
-    parentElement.innerHTML = "<" + elementName + "></" + elementName + ">";
-    var element = parentElement.firstChild || null;
-      
-    // see if browser added wrapping tags
-    if(element && (element.tagName != elementName))
-      element = element.getElementsByTagName(elementName)[0];
-    
-    // fallback to createElement approach
-    if(!element) element = document.createElement(elementName);
-    
-    // abort if nothing could be created
-    if(!element) return;
-
-    // attributes (or text)
-    if(arguments[1])
-      if(this._isStringOrNumber(arguments[1]) ||
-        (arguments[1] instanceof Array)) {
-          this._children(element, arguments[1]);
-        } else {
-          var attrs = this._attributes(arguments[1]);
-          if(attrs.length) {
-            parentElement.innerHTML = "<" +elementName + " " +
-              attrs + "></" + elementName + ">";
-            element = parentElement.firstChild || null;
-            // workaround firefox 1.0.X bug
-            if(!element) {
-              element = document.createElement(elementName);
-              for(attr in arguments[1]) 
-                element[attr == 'class' ? 'className' : attr] = arguments[1][attr];
-            }
-            if(element.tagName != elementName)
-              element = parentElement.getElementsByTagName(elementName)[0];
-            }
-        } 
-
-    // text, or array of children
-    if(arguments[2])
-      this._children(element, arguments[2]);
-
-     return element;
-  },
-  _text: function(text) {
-     return document.createTextNode(text);
-  },
-  _attributes: function(attributes) {
-    var attrs = [];
-    for(attribute in attributes)
-      attrs.push((attribute=='className' ? 'class' : attribute) +
-          '="' + attributes[attribute].toString().escapeHTML() + '"');
-    return attrs.join(" ");
-  },
-  _children: function(element, children) {
-    if(typeof children=='object') { // array can hold nodes and text
-      children.flatten().each( function(e) {
-        if(typeof e=='object')
-          element.appendChild(e)
-        else
-          if(Builder._isStringOrNumber(e))
-            element.appendChild(Builder._text(e));
-      });
-    } else
-      if(Builder._isStringOrNumber(children)) 
-         element.appendChild(Builder._text(children));
-  },
-  _isStringOrNumber: function(param) {
-    return(typeof param=='string' || typeof param=='number');
-  }
+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 ext -------------- */
-
-// converts rgb() and #xxx to #xxxxxx format,
-// returns self (or first argument) if not convertable
-String.prototype.parseColor = function() {
-  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);
-  } else {
-    if(this.slice(0,1) == '#') {
-      if(this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();
-      if(this.length==7) color = this.toLowerCase();
-    }
-  }
-  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.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 = $(element);
-  element.style.fontSize = (percent/100) + "em";  
+  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 = $(element);
   var opacity;
-  if (opacity = Element.getStyle(element, "opacity"))
-    return parseFloat(opacity);
-  if (opacity = (Element.getStyle(element, "filter") || '').match(/alpha\(opacity=(.*)\)/))
-    if(opacity[1]) return parseFloat(opacity[1]) / 100;
-  return 1.0;
+  if (opacity = element.getStyle('opacity'))  
+    return parseFloat(opacity);  
+  if (opacity = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))  
+    if(opacity[1]) return parseFloat(opacity[1]) / 100;  
+  return 1.0;  
 }
 
-Element.setOpacity = function(element, value){
-  element= $(element);
-  var els = element.style;
+Element.setOpacity = function(element, value){  
+  element= $(element);  
   if (value == 1){
-    els.opacity = '0.999999';
-    if(/MSIE/.test(navigator.userAgent))
-      els.filter = Element.getStyle(element,'filter').replace(/alpha\([^\)]*\)/gi,'');
-  } else {
-    if(value < 0.00001) value = 0;
-    els.opacity = value;
-    if(/MSIE/.test(navigator.userAgent))
-      els.filter = Element.getStyle(element,'filter').replace(/alpha\([^\)]*\)/gi,'') + 
-        "alpha(opacity="+value*100+")";
-  }  
-}
+    element.setStyle({ opacity: 
+      (/Gecko/.test(navigator.userAgent) && !/Konqueror|Safari|KHTML/.test(navigator.userAgent)) ? 
+      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({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.getInlineOpacity = function(element){
-  element= $(element);
-  var op;
-  op = element.style.opacity;
-  if (typeof op != "undefined" && op != "") return op;
-  return "";
-}
-
-Element.setInlineOpacity = function(element, value){
-  element= $(element);
-  var els = element.style;
-  els.opacity = value;
-}
+Element.forceRerendering = function(element) {
+  try {
+    element = $(element);
+    var n = document.createTextNode(' ');
+    element.appendChild(n);
+    element.removeChild(n);
+  } catch(e) { }
+};
 
 /*--------------------------------------------------------------------------*/
 
-Element.Class = {
-    // Element.toggleClass(element, className) toggles the class being on/off
-    // Element.toggleClass(element, className1, className2) toggles between both classes,
-    //   defaulting to className1 if neither exist
-    toggle: function(element, className) {
-      if(Element.Class.has(element, className)) {
-        Element.Class.remove(element, className);
-        if(arguments.length == 3) Element.Class.add(element, arguments[2]);
-      } else {
-        Element.Class.add(element, className);
-        if(arguments.length == 3) Element.Class.remove(element, arguments[2]);
-      }
-    },
-
-    // gets space-delimited classnames of an element as an array
-    get: function(element) {
-      return $(element).className.split(' ');
-    },
-
-    // functions adapted from original functions by Gavin Kistner
-    remove: function(element) {
-      element = $(element);
-      var removeClasses = arguments;
-      $R(1,arguments.length-1).each( function(index) {
-        element.className = 
-          element.className.split(' ').reject( 
-            function(klass) { return (klass == removeClasses[index]) } ).join(' ');
-      });
-    },
-
-    add: function(element) {
-      element = $(element);
-      for(var i = 1; i < arguments.length; i++) {
-        Element.Class.remove(element, arguments[i]);
-        element.className += (element.className.length > 0 ? ' ' : '') + arguments[i];
-      }
-    },
-
-    // returns true if all given classes exist in said element
-    has: function(element) {
-      element = $(element);
-      if(!element || !element.className) return false;
-      var regEx;
-      for(var i = 1; i < arguments.length; i++) {
-        if((typeof arguments[i] == 'object') && 
-          (arguments[i].constructor == Array)) {
-          for(var j = 0; j < arguments[i].length; j++) {
-            regEx = new RegExp("(^|\\s)" + arguments[i][j] + "(\\s|$)");
-            if(!regEx.test(element.className)) return false;
-          }
-        } else {
-          regEx = new RegExp("(^|\\s)" + arguments[i] + "(\\s|$)");
-          if(!regEx.test(element.className)) return false;
-        }
-      }
-      return true;
-    },
-
-    // expects arrays of strings and/or strings as optional paramters
-    // Element.Class.has_any(element, ['classA','classB','classC'], 'classD')
-    has_any: function(element) {
-      element = $(element);
-      if(!element || !element.className) return false;
-      var regEx;
-      for(var i = 1; i < arguments.length; i++) {
-        if((typeof arguments[i] == 'object') && 
-          (arguments[i].constructor == Array)) {
-          for(var j = 0; j < arguments[i].length; j++) {
-            regEx = new RegExp("(^|\\s)" + arguments[i][j] + "(\\s|$)");
-            if(regEx.test(element.className)) return true;
-          }
-        } else {
-          regEx = new RegExp("(^|\\s)" + arguments[i] + "(\\s|$)");
-          if(regEx.test(element.className)) return true;
-        }
-      }
-      return false;
-    },
-
-    childrenWith: function(element, className) {
-      var children = $(element).getElementsByTagName('*');
-      var elements = new Array();
-
-      for (var i = 0; i < children.length; i++)
-        if (Element.Class.has(children[i], className))
-          elements.push(children[i]);
-
-      return elements;
-    }
+Array.prototype.call = function() {
+  var args = arguments;
+  this.each(function(f){ f.apply(this, args) });
 }
 
 /*--------------------------------------------------------------------------*/
 
 var Effect = {
+  _elementDoesNotExistError: {
+    name: 'ElementDoesNotExistError',
+    message: 'The specified DOM element does not exist, but is required for this effect to operate'
+  },
   tagifyText: function(element) {
-    var tagifyStyle = "position:relative";
-    if(/MSIE/.test(navigator.userAgent)) tagifyStyle += ";zoom:1";
+    if(typeof Builder == 'undefined')
+      throw("Effect.tagifyText requires including script.aculo.us' builder.js library");
+      
+    var tagifyStyle = 'position:relative';
+    if(/MSIE/.test(navigator.userAgent) && !window.opera) tagifyStyle += ';zoom:1';
+    
     element = $(element);
     $A(element.childNodes).each( function(child) {
       if(child.nodeType==3) {
         child.nodeValue.toArray().each( function(character) {
           element.insertBefore(
             Builder.node('span',{style: tagifyStyle},
-              character == " " ? String.fromCharCode(160) : character), 
+              character == ' ' ? String.fromCharCode(160) : character), 
               child);
         });
         Element.remove(child);
@@ -326,12 +136,25 @@ var Effect = {
       speed: 0.1,
       delay: 0.0
     }, arguments[2] || {});
-    var speed = options.speed;
-    var delay = options.delay;
+    var masterDelay = options.delay;
 
     $A(elements).each( function(element, index) {
-      new effect(element, Object.extend(options, { delay: delay + index * speed }));
+      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);
   }
 };
 
@@ -339,43 +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:  [],
-  interval: null,
+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);
+  },
   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) {
@@ -383,6 +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;
@@ -391,7 +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);
   },
@@ -406,31 +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'
 }
 
 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) {
@@ -457,21 +311,28 @@ Effect.Base.prototype = {
       if(this.setup) this.setup();
       this.event('afterSetup');
     }
-    if(this.options.transition) pos = this.options.transition(pos);
-    pos *= (this.options.to-this.options.from);
-    pos += this.options.from;
-    this.position = pos;
-    this.event('beforeUpdate');
-    if(this.update) this.update(pos);
-    this.event('afterUpdate');
+    if(this.state == 'running') {
+      if(this.options.transition) pos = this.options.transition(pos);
+      pos *= (this.options.to-this.options.from);
+      pos += this.options.from;
+      this.position = pos;
+      this.event('beforeUpdate');
+      if(this.update) this.update(pos);
+      this.event('afterUpdate');
+    }
   },
   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) {
     if(this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
     if(this.options[eventName]) this.options[eventName](this);
+  },
+  inspect: function() {
+    return '#<Effect:' + $H(this).inspect() + ',options:' + $H(this.options).inspect() + '>';
   }
 }
 
@@ -495,57 +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))
-      this.element.style.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');
+    // (to 0 if you do not need them) 
+    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) {
-    var topd  = this.toTop  * position + this.originalTop;
-    var leftd = this.toLeft * position + this.originalLeft;
-    this.setPosition(topd, leftd);
-  },
-  setPosition: function(topd, leftd) {
-    this.element.style.top  = topd  + "px";
-    this.element.style.left = leftd + "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,
@@ -558,33 +443,31 @@ Object.extend(Object.extend(Effect.Scale.prototype, Effect.Base.prototype), {
     this.start(options);
   },
   setup: function() {
-    var effect = this;
-    
     this.restoreAfterFinish = this.options.restoreAfterFinish || false;
-    this.elementPositioning = Element.getStyle(this.element,'position');
+    this.elementPositioning = this.element.getStyle('position');
     
-    effect.originalStyle = {};
+    this.originalStyle = {};
     ['top','left','width','height','fontSize'].each( function(k) {
-      effect.originalStyle[k] = effect.element.style[k];
-    });
+      this.originalStyle[k] = this.element.style[k];
+    }.bind(this));
       
     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) {
-        effect.fontSize     = parseFloat(fontSize);
-        effect.fontSizeType = fontSizeType;
+        this.fontSize     = parseFloat(fontSize);
+        this.fontSizeType = fontSizeType;
       }
-    });
+    }.bind(this));
     
     this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;
     
     this.dims = null;
     if(this.options.scaleMode=='box')
-      this.dims = [this.element.clientHeight, this.element.clientWidth];
-    if(this.options.scaleMode=='content')
+      this.dims = [this.element.offsetHeight, this.element.offsetWidth];
+    if(/^content/.test(this.options.scaleMode))
       this.dims = [this.element.scrollHeight, this.element.scrollWidth];
     if(!this.dims)
       this.dims = [this.options.scaleMode.originalHeight,
@@ -593,32 +476,28 @@ 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)
-      this.element.style.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) {
-      var effect = this;
-      ['top','left','width','height','fontSize'].each( function(k) {
-        effect.element.style[k] = effect.originalStyle[k];
-      });
-    }
+    if(this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
   },
   setDimensions: function(height, width) {
-    var els = this.element.style;
-    if(this.options.scaleX) els.width = width + 'px';
-    if(this.options.scaleY) els.height = height + 'px';
+    var d = {};
+    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;
       if(this.elementPositioning == 'absolute') {
-        if(this.options.scaleY) els.top = this.originalTop-topd + "px";
-        if(this.options.scaleX) els.left = this.originalLeft-leftd + "px";
+        if(this.options.scaleY) d.top = this.originalTop-topd + 'px';
+        if(this.options.scaleX) d.left = this.originalLeft-leftd + 'px';
       } else {
-        if(this.options.scaleY) els.top = -topd + "px";
-        if(this.options.scaleX) els.left = -leftd + "px";
+        if(this.options.scaleY) d.top = -topd + 'px';
+        if(this.options.scaleX) d.left = -leftd + 'px';
       }
     }
+    this.element.setStyle(d);
   }
 });
 
@@ -626,39 +505,33 @@ Effect.Highlight = Class.create();
 Object.extend(Object.extend(Effect.Highlight.prototype, Effect.Base.prototype), {
   initialize: function(element) {
     this.element = $(element);
-    var options = Object.extend({
-      startcolor:   "#ffff99"
-    }, arguments[1] || {});
+    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(this.element.getStyle('display')=='none') { this.cancel(); return; }
     // Disable background image during the effect
-    this.oldBgImage = this.element.style.backgroundImage;
-    this.element.style.backgroundImage = "none";
+    this.oldStyle = {
+      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');
-    if (typeof this.options.restorecolor == "undefined")
-      this.options.restorecolor = this.element.style.backgroundColor;
+      this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
+    if(!this.options.restorecolor)
+      this.options.restorecolor = this.element.getStyle('background-color');
     // init color calculations
-    this.colors_base = [
-      parseInt(this.options.startcolor.slice(1,3),16),
-      parseInt(this.options.startcolor.slice(3,5),16),
-      parseInt(this.options.startcolor.slice(5),16) ];
-    this.colors_delta = [
-      parseInt(this.options.endcolor.slice(1,3),16)-this.colors_base[0],
-      parseInt(this.options.endcolor.slice(3,5),16)-this.colors_base[1],
-      parseInt(this.options.endcolor.slice(5),16)-this.colors_base[2]];
+    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) {
-    var effect = this; var colors = $R(0,2).map( function(i){ 
-      return Math.round(effect.colors_base[i]+(effect.colors_delta[i]*position))
-    });
-    this.element.style.backgroundColor = "#" +
-      colors[0].toColorPart() + colors[1].toColorPart() + colors[2].toColorPart();
+    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() {
-    this.element.style.backgroundColor = this.options.restorecolor;
-    this.element.style.backgroundImage = this.oldBgImage;
+    this.element.setStyle(Object.extend(this.oldStyle, {
+      backgroundColor: this.options.restorecolor
+    }));
   }
 });
 
@@ -671,6 +544,7 @@ Object.extend(Object.extend(Effect.ScrollTo.prototype, Effect.Base.prototype), {
   setup: function() {
     Position.prepare();
     var offsets = Position.cumulativeOffset(this.element);
+    if(this.options.offset) offsets[1] += this.options.offset;
     var max = window.innerHeight ? 
       window.height - window.innerHeight :
       document.body.scrollHeight - 
@@ -689,93 +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) 
-    { if (effect.options.to == 0) {
-        Element.hide(effect.element);
-        Element.setInlineOpacity(effect.element, oldOpacity);
-      }  
-    }
-  }, arguments[1] || {});
+  afterFinishInternal: function(effect) { 
+    if(effect.options.to!=0) return;
+    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)  
-    { Element.setOpacity(effect.element, effect.options.from);
-      Element.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 oldOpacity = Element.getInlineOpacity(element);
-  var oldPosition = element.style.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) 
-       { effect.effects[0].element.style.position = 'absolute'; },
-      afterFinishInternal: function(effect)
-       { Element.hide(effect.effects[0].element);
-         effect.effects[0].element.style.position = oldPosition;
-         Element.setInlineOpacity(effect.effects[0].element, oldOpacity); }
+      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)
-        { 
-          Element.hide(effect.element);
-          Element.undoClipping(effect.element);
-        } 
+      afterFinishInternal: function(effect) {
+        effect.element.hide().undoClipping();
+      } 
     }, arguments[1] || {})
   );
 }
 
 Effect.BlindDown = function(element) {
   element = $(element);
-  var oldHeight = element.style.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) {
-        Element.makeClipping(effect.element);
-        effect.element.style.height = "0px";
-        Element.show(effect.element); 
-      },  
-      afterFinishInternal: function(effect) {
-        Element.undoClipping(effect.element);
-        effect.element.style.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,
@@ -784,211 +658,192 @@ Effect.SwitchOff = function(element) {
         duration: 0.3, scaleFromCenter: true,
         scaleX: false, scaleContent: false, restoreAfterFinish: true,
         beforeSetup: function(effect) { 
-          Element.makePositioned(effect.element); 
-          Element.makeClipping(effect.element);
+          effect.element.makePositioned().makeClipping();
         },
-        afterFinishInternal: function(effect) { 
-          Element.hide(effect.element); 
-          Element.undoClipping(effect.element);
-          Element.undoPositioned(effect.element);
-          Element.setInlineOpacity(effect.element, oldOpacity);
+        afterFinishInternal: function(effect) {
+          effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
         }
       })
     }
-  });
+  }, arguments[1] || {}));
 }
 
 Effect.DropOut = function(element) {
   element = $(element);
-  var oldTop = element.style.top;
-  var oldLeft = element.style.left;
-  var oldOpacity = Element.getInlineOpacity(element);
+  var oldStyle = {
+    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) { 
-          Element.makePositioned(effect.effects[0].element); },
-        afterFinishInternal: function(effect) { 
-          Element.hide(effect.effects[0].element); 
-          Element.undoPositioned(effect.effects[0].element);
-          effect.effects[0].element.style.left = oldLeft;
-          effect.effects[0].element.style.top = oldTop;
-          Element.setInlineOpacity(effect.effects[0].element, oldOpacity); } 
+        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 oldTop = element.style.top;
-  var oldLeft = element.style.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) {
-        Element.undoPositioned(effect.element);
-        effect.element.style.left = oldLeft;
-        effect.element.style.top = oldTop;
+  var 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.firstChild.style.bottom;
-  var elementDimensions = Element.getDimensions(element);
-  return new Effect.Scale(element, 100, 
-   Object.extend({ scaleContent: false, 
+  var oldInnerBottom = element.down().getStyle('bottom');
+  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},    
+    scaleFrom: window.opera ? 0 : 1,
+    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
     restoreAfterFinish: true,
     afterSetup: function(effect) {
-      Element.makePositioned(effect.element.firstChild);
-      if (window.opera) effect.element.firstChild.style.top = "";
-      Element.makeClipping(effect.element);
-      element.style.height = '0';
-      Element.show(element); 
-    },  
-    afterUpdateInternal: function(effect) { 
-      effect.element.firstChild.style.bottom = 
-        (effect.originalHeight - effect.element.clientHeight) + 'px'; },
-    afterFinishInternal: function(effect) { 
-      Element.undoClipping(effect.element); 
-      Element.undoPositioned(effect.element.firstChild);
-      effect.element.firstChild.style.bottom = oldInnerBottom; }
+      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.firstChild.style.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) { 
-      Element.makePositioned(effect.element.firstChild);
-      if (window.opera) effect.element.firstChild.style.top = "";
-      Element.makeClipping(effect.element);
-      Element.show(element); 
+    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.firstChild.style.bottom = 
-       (effect.originalHeight - effect.element.clientHeight) + 'px'; },
-    afterFinishInternal: function(effect) { 
-        Element.hide(effect.element);
-        Element.undoClipping(effect.element); 
-        Element.undoPositioned(effect.element.firstChild);
-        effect.element.firstChild.style.bottom = oldInnerBottom; }
+    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) {
-  // Bug in opera makes the TD containing this element expand for a instance after finish 
-  return new Effect.Scale(element, window.opera ? 1 : 0, 
-    { restoreAfterFinish: true,
-      beforeSetup: function(effect) { 
-        Element.makeClipping(effect.element); },  
-      afterFinishInternal: function(effect) { 
-        Element.hide(effect.element); 
-        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(); 
+    }
   });
 }
 
 Effect.Grow = function(element) {
   element = $(element);
-  var options = arguments[1] || {};
-  
-  var elementDimensions = Element.getDimensions(element);
-  var originalWidth = elementDimensions.width;
-  var originalHeight = elementDimensions.height;
-  var oldTop = element.style.top;
-  var oldLeft = element.style.left;
-  var oldHeight = element.style.height;
-  var oldWidth = element.style.width;
-  var oldOpacity = Element.getInlineOpacity(element);
-  
-  var direction = options.direction || 'center';
-  var moveTransition = options.moveTransition || Effect.Transitions.sinoidal;
-  var scaleTransition = options.scaleTransition || Effect.Transitions.sinoidal;
-  var opacityTransition = options.opacityTransition || Effect.Transitions.full;
-  
+  var options = Object.extend({
+    direction: 'center',
+    moveTransition: Effect.Transitions.sinoidal,
+    scaleTransition: Effect.Transitions.sinoidal,
+    opacityTransition: Effect.Transitions.full
+  }, arguments[1] || {});
+  var oldStyle = {
+    top: element.style.top,
+    left: element.style.left,
+    height: element.style.height,
+    width: element.style.width,
+    opacity: element.getInlineOpacity() };
+
+  var dims = element.getDimensions();    
   var initialMoveX, initialMoveY;
   var moveX, moveY;
   
-  switch (direction) {
+  switch (options.direction) {
     case 'top-left':
       initialMoveX = initialMoveY = moveX = moveY = 0; 
       break;
     case 'top-right':
-      initialMoveX = originalWidth;
+      initialMoveX = dims.width;
       initialMoveY = moveY = 0;
-      moveX = -originalWidth;
+      moveX = -dims.width;
       break;
     case 'bottom-left':
       initialMoveX = moveX = 0;
-      initialMoveY = originalHeight;
-      moveY = -originalHeight;
+      initialMoveY = dims.height;
+      moveY = -dims.height;
       break;
     case 'bottom-right':
-      initialMoveX = originalWidth;
-      initialMoveY = originalHeight;
-      moveX = -originalWidth;
-      moveY = -originalHeight;
+      initialMoveX = dims.width;
+      initialMoveY = dims.height;
+      moveX = -dims.width;
+      moveY = -dims.height;
       break;
     case 'center':
-      initialMoveX = originalWidth / 2;
-      initialMoveY = originalHeight / 2;
-      moveX = -originalWidth / 2;
-      moveY = -originalHeight / 2;
+      initialMoveX = dims.width / 2;
+      initialMoveY = dims.height / 2;
+      moveX = -dims.width / 2;
+      moveY = -dims.height / 2;
       break;
   }
   
-  return new Effect.MoveBy(element, initialMoveY, initialMoveX, { 
+  return new Effect.Move(element, {
+    x: initialMoveX,
+    y: initialMoveY,
     duration: 0.01, 
-    beforeSetup: function(effect) { 
-      Element.hide(effect.element);
-      Element.makeClipping(effect.element);
-      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: opacityTransition }),
-          new Effect.MoveBy(effect.element, moveY, moveX, { sync: true, transition: moveTransition }),
+        [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
+          new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
           new Effect.Scale(effect.element, 100, {
-            scaleMode: { originalHeight: originalHeight, originalWidth: originalWidth }, 
-            sync: true, scaleFrom: window.opera ? 1 : 0, transition: scaleTransition, restoreAfterFinish: true})
+            scaleMode: { originalHeight: dims.height, originalWidth: dims.width }, 
+            sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
         ], Object.extend({
              beforeSetup: function(effect) {
-              effect.effects[0].element.style.height = 0;
-              Element.show(effect.effects[0].element);
-             },              
+               effect.effects[0].element.setStyle({height: '0px'}).show(); 
+             },
              afterFinishInternal: function(effect) {
-               var el = effect.effects[0].element;
-               var els = el.style;
-               Element.undoClipping(el); 
-               Element.undoPositioned(el);
-               els.top = oldTop;
-               els.left = oldLeft;
-               els.height = oldHeight;
-               els.width = originalWidth;
-               Element.setInlineOpacity(el, oldOpacity);
+               effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle); 
              }
            }, options)
       )
@@ -998,66 +853,54 @@ Effect.Grow = function(element) {
 
 Effect.Shrink = function(element) {
   element = $(element);
-  var options = arguments[1] || {};
-  
-  var originalWidth = element.clientWidth;
-  var originalHeight = element.clientHeight;
-  var oldTop = element.style.top;
-  var oldLeft = element.style.left;
-  var oldHeight = element.style.height;
-  var oldWidth = element.style.width;
-  var oldOpacity = Element.getInlineOpacity(element);
+  var options = Object.extend({
+    direction: 'center',
+    moveTransition: Effect.Transitions.sinoidal,
+    scaleTransition: Effect.Transitions.sinoidal,
+    opacityTransition: Effect.Transitions.none
+  }, arguments[1] || {});
+  var oldStyle = {
+    top: element.style.top,
+    left: element.style.left,
+    height: element.style.height,
+    width: element.style.width,
+    opacity: element.getInlineOpacity() };
 
-  var direction = options.direction || 'center';
-  var moveTransition = options.moveTransition || Effect.Transitions.sinoidal;
-  var scaleTransition = options.scaleTransition || Effect.Transitions.sinoidal;
-  var opacityTransition = options.opacityTransition || Effect.Transitions.none;
-  
+  var dims = element.getDimensions();
   var moveX, moveY;
   
-  switch (direction) {
+  switch (options.direction) {
     case 'top-left':
       moveX = moveY = 0;
       break;
     case 'top-right':
-      moveX = originalWidth;
+      moveX = dims.width;
       moveY = 0;
       break;
     case 'bottom-left':
       moveX = 0;
-      moveY = originalHeight;
+      moveY = dims.height;
       break;
     case 'bottom-right':
-      moveX = originalWidth;
-      moveY = originalHeight;
+      moveX = dims.width;
+      moveY = dims.height;
       break;
     case 'center':  
-      moveX = originalWidth / 2;
-      moveY = originalHeight / 2;
+      moveX = dims.width / 2;
+      moveY = dims.height / 2;
       break;
   }
   
   return new Effect.Parallel(
-    [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: opacityTransition }),
-      new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: scaleTransition, restoreAfterFinish: true}),
-      new Effect.MoveBy(element, moveY, moveX, { sync: true, transition: moveTransition })
+    [ 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.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
     ], Object.extend({            
-         beforeStartInternal: function(effect) { 
-           Element.makePositioned(effect.effects[0].element);
-           Element.makeClipping(effect.effects[0].element);
+         beforeStartInternal: function(effect) {
+           effect.effects[0].element.makePositioned().makeClipping(); 
          },
          afterFinishInternal: function(effect) {
-           var el = effect.effects[0].element;
-           var els = el.style;
-           Element.hide(el);
-           Element.undoClipping(el); 
-           Element.undoPositioned(el);
-           els.top = oldTop;
-           els.left = oldLeft;
-           els.height = oldHeight;
-           els.width = oldWidth;
-           Element.setInlineOpacity(el, oldOpacity);
-         }
+           effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
        }, options)
   );
 }
@@ -1065,23 +908,24 @@ 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.setInlineOpacity(effect.element, oldOpacity); }
+    Object.extend(Object.extend({  duration: 2.0, from: 0,
+      afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
     }, options), {transition: reverser}));
 }
 
 Effect.Fold = function(element) {
   element = $(element);
-  var originalTop = element.style.top;
-  var originalLeft = element.style.left;
-  var originalWidth = element.style.width;
-  var originalHeight = element.style.height;
-  Element.makeClipping(element);
+  var oldStyle = {
+    top: element.style.top,
+    left: element.style.left,
+    width: element.style.width,
+    height: element.style.height };
+  element.makeClipping();
   return new Effect.Scale(element, 5, Object.extend({   
     scaleContent: false,
     scaleX: false,
@@ -1089,13 +933,156 @@ Effect.Fold = function(element) {
     new Effect.Scale(element, 1, { 
       scaleContent: false, 
       scaleY: false,
-      afterFinishInternal: function(effect) { 
-        Element.hide(effect.element);  
-        Element.undoClipping(effect.element); 
-        effect.element.style.top = originalTop;
-        effect.element.style.left = originalLeft;
-        effect.element.style.width = originalWidth;
-        effect.element.style.height = originalHeight;
+      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 120f4cb9..50582217 100644
--- a/public/javascripts/prototype.js
+++ b/public/javascripts/prototype.js
@@ -1,20 +1,20 @@
-/*  Prototype JavaScript framework, version 1.4.0_rc0
- *  (c) 2005 Sam Stephenson <sam@conio.net>
- *
- *  THIS FILE IS AUTOMATICALLY GENERATED. When sending patches, please diff
- *  against the source tree, available from the Prototype darcs repository.
+/*  Prototype 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/
  *
 /*--------------------------------------------------------------------------*/
 
 var Prototype = {
-  Version: '1.4.0_rc0',
+  Version: '1.5.0',
+  BrowserFeatures: {
+    XPath: !!document.evaluate
+  },
 
+  ScriptFragment: '(?:<script.*?>)((\n|\r|.)*?)(?:<\/script>)',
   emptyFunction: function() {},
-  K: function(x) {return x}
+  K: function(x) { return x }
 }
 
 var Class = {
@@ -28,34 +28,54 @@ var Class = {
 var Abstract = new Object();
 
 Object.extend = function(destination, source) {
-  for (property in source) {
+  for (var property in source) {
     destination[property] = source[property];
   }
   return destination;
 }
 
-Object.inspect = function(object) {
-  try {
-    if (object == undefined) return 'undefined';
-    if (object == null) return 'null';
-    return object.inspect ? object.inspect() : object.toString();
-  } catch (e) {
-    if (e instanceof RangeError) return '...';
-    throw e;
-  }
-}
+Object.extend(Object, {
+  inspect: function(object) {
+    try {
+      if (object === undefined) return 'undefined';
+      if (object === null) return 'null';
+      return object.inspect ? object.inspect() : object.toString();
+    } catch (e) {
+      if (e instanceof RangeError) return '...';
+      throw e;
+    }
+  },
 
-Function.prototype.bind = function(object) {
-  var __method = this;
+  keys: function(object) {
+    var keys = [];
+    for (var property in object)
+      keys.push(property);
+    return keys;
+  },
+
+  values: function(object) {
+    var values = [];
+    for (var property in object)
+      values.push(object[property]);
+    return values;
+  },
+
+  clone: function(object) {
+    return Object.extend({}, object);
+  }
+});
+
+Function.prototype.bind = function() {
+  var __method = this, args = $A(arguments), object = args.shift();
   return function() {
-    return __method.apply(object, arguments);
+    return __method.apply(object, args.concat($A(arguments)));
   }
 }
 
 Function.prototype.bindAsEventListener = function(object) {
-  var __method = this;
+  var __method = this, args = $A(arguments), object = args.shift();
   return function(event) {
-    return __method.call(object, event || window.event);
+    return __method.apply(object, [( event || window.event)].concat(args).concat($A(arguments)));
   }
 }
 
@@ -80,7 +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();
@@ -105,44 +125,93 @@ PeriodicalExecuter.prototype = {
   },
 
   registerCallback: function() {
-    setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
+    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
+  },
+
+  stop: function() {
+    if (!this.timer) return;
+    clearInterval(this.timer);
+    this.timer = null;
   },
 
   onTimerEvent: function() {
     if (!this.currentlyExecuting) {
       try {
         this.currentlyExecuting = true;
-        this.callback();
+        this.callback(this);
       } finally {
         this.currentlyExecuting = false;
       }
     }
   }
 }
-
-/*--------------------------------------------------------------------------*/
-
-function $() {
-  var elements = new Array();
-
-  for (var i = 0; i < arguments.length; i++) {
-    var element = arguments[i];
-    if (typeof element == 'string')
-      element = document.getElementById(element);
-
-    if (arguments.length == 1)
-      return element;
-
-    elements.push(element);
-  }
-
-  return elements;
+String.interpret = function(value){
+  return value == null ? '' : String(value);
 }
+
 Object.extend(String.prototype, {
+  gsub: function(pattern, replacement) {
+    var result = '', source = this, match;
+    replacement = arguments.callee.prepareReplacement(replacement);
+
+    while (source.length > 0) {
+      if (match = source.match(pattern)) {
+        result += source.slice(0, match.index);
+        result += String.interpret(replacement(match));
+        source  = source.slice(match.index + match[0].length);
+      } else {
+        result += source, source = '';
+      }
+    }
+    return result;
+  },
+
+  sub: function(pattern, replacement, count) {
+    replacement = this.gsub.prepareReplacement(replacement);
+    count = count === undefined ? 1 : count;
+
+    return this.gsub(pattern, function(match) {
+      if (--count < 0) return match[0];
+      return replacement(match);
+    });
+  },
+
+  scan: function(pattern, iterator) {
+    this.gsub(pattern, iterator);
+    return this;
+  },
+
+  truncate: function(length, truncation) {
+    length = length || 30;
+    truncation = truncation === undefined ? '...' : truncation;
+    return this.length > length ?
+      this.slice(0, length - truncation.length) + truncation : this;
+  },
+
+  strip: function() {
+    return this.replace(/^\s+/, '').replace(/\s+$/, '');
+  },
+
   stripTags: function() {
     return this.replace(/<\/?[^>]+>/gi, '');
   },
 
+  stripScripts: function() {
+    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
+  },
+
+  extractScripts: function() {
+    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
+    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
+    return (this.match(matchAll) || []).map(function(scriptTag) {
+      return (scriptTag.match(matchOne) || ['', ''])[1];
+    });
+  },
+
+  evalScripts: function() {
+    return this.extractScripts().map(function(script) { return eval(script) });
+  },
+
   escapeHTML: function() {
     var div = document.createElement('div');
     var text = document.createTextNode(this);
@@ -153,15 +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 pairs = this.match(/^\??(.*)$/)[1].split('&');
-    return pairs.inject({}, function(params, pairString) {
-      var pair = pairString.split('=');
-      params[pair[0]] = pair[1];
-      return params;
+  toQueryParams: function(separator) {
+    var match = this.strip().match(/([^?#]*)(#.*)?$/);
+    if (!match) return {};
+
+    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;
     });
   },
 
@@ -169,29 +251,71 @@ Object.extend(String.prototype, {
     return this.split('');
   },
 
-  camelize: function() {
-    var oStringList = this.split('-');
-    if (oStringList.length == 1) return oStringList[0];
-
-    var camelizedString = this.indexOf('-') == 0
-      ? oStringList[0].charAt(0).toUpperCase() + oStringList[0].substring(1)
-      : oStringList[0];
-
-    for (var i = 1, len = oStringList.length; i < len; i++) {
-      var s = oStringList[i];
-      camelizedString += s.charAt(0).toUpperCase() + s.substring(1);
-    }
-
-    return camelizedString;
+  succ: function() {
+    return this.slice(0, this.length - 1) +
+      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
   },
 
-  inspect: function() {
-    return "'" + this.replace('\\', '\\\\').replace("'", '\\\'') + "'";
+  camelize: function() {
+    var parts = this.split('-'), len = parts.length;
+    if (len == 1) return parts[0];
+
+    var camelized = this.charAt(0) == '-'
+      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
+      : parts[0];
+
+    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();
+  },
+
+  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) {
+    var escapedString = this.replace(/\\/g, '\\\\');
+    if (useDoubleQuotes)
+      return '"' + escapedString.replace(/"/g, '\\"') + '"';
+    else
+      return "'" + escapedString.replace(/'/g, '\\\'') + "'";
   }
 });
 
+String.prototype.gsub.prepareReplacement = function(replacement) {
+  if (typeof replacement == 'function') return replacement;
+  var template = new Template(replacement);
+  return function(match) { return template.evaluate(match) };
+}
+
 String.prototype.parseQuery = String.prototype.toQueryParams;
 
+var Template = Class.create();
+Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
+Template.prototype = {
+  initialize: function(template, pattern) {
+    this.template = template.toString();
+    this.pattern  = pattern || Template.Pattern;
+  },
+
+  evaluate: function(object) {
+    return this.template.gsub(this.pattern, function(match) {
+      var before = match[1];
+      if (before == '\\') return match[2];
+      return before + String.interpret(object[match[3]]);
+    });
+  }
+}
+
 var $break    = new Object();
 var $continue = new Object();
 
@@ -209,21 +333,29 @@ var Enumerable = {
     } catch (e) {
       if (e != $break) throw e;
     }
+    return this;
+  },
+
+  eachSlice: function(number, iterator) {
+    var index = -number, slices = [], array = this.toArray();
+    while ((index += number) < array.length)
+      slices.push(array.slice(index, index+number));
+    return slices.map(iterator);
   },
 
   all: function(iterator) {
     var result = true;
     this.each(function(value, index) {
-      if (!(result &= (iterator || Prototype.K)(value, index)))
-        throw $break;
+      result = result && !!(iterator || Prototype.K)(value, index);
+      if (!result) throw $break;
     });
     return result;
   },
 
   any: function(iterator) {
-    var result = true;
+    var result = false;
     this.each(function(value, index) {
-      if (result &= (iterator || Prototype.K)(value, index))
+      if (result = !!(iterator || Prototype.K)(value, index))
         throw $break;
     });
     return result;
@@ -232,12 +364,12 @@ 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;
   },
 
-  detect: function (iterator) {
+  detect: function(iterator) {
     var result;
     this.each(function(value, index) {
       if (iterator(value, index)) {
@@ -278,6 +410,14 @@ var Enumerable = {
     return found;
   },
 
+  inGroupsOf: function(number, fillWith) {
+    fillWith = fillWith === undefined ? null : fillWith;
+    return this.eachSlice(number, function(slice) {
+      while(slice.length < number) slice.push(fillWith);
+      return slice;
+    });
+  },
+
   inject: function(memo, iterator) {
     this.each(function(value, index) {
       memo = iterator(memo, value, index);
@@ -287,7 +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);
     });
   },
@@ -296,7 +436,7 @@ var Enumerable = {
     var result;
     this.each(function(value, index) {
       value = (iterator || Prototype.K)(value, index);
-      if (value >= (result || value))
+      if (result == undefined || value >= result)
         result = value;
     });
     return result;
@@ -306,7 +446,7 @@ var Enumerable = {
     var result;
     this.each(function(value, index) {
       value = (iterator || Prototype.K)(value, index);
-      if (value <= (result || value))
+      if (result == undefined || value < result)
         result = value;
     });
     return result;
@@ -339,7 +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;
@@ -348,7 +488,7 @@ var Enumerable = {
   },
 
   toArray: function() {
-    return this.collect(Prototype.K);
+    return this.map();
   },
 
   zip: function() {
@@ -358,11 +498,14 @@ var Enumerable = {
 
     var collections = [this].concat(args).map($A);
     return this.map(function(value, index) {
-      iterator(value = collections.pluck(index));
-      return value;
+      return iterator(collections.pluck(index));
     });
   },
 
+  size: function() {
+    return this.toArray().length;
+  },
+
   inspect: function() {
     return '#<Enumerable:' + this.toArray().inspect() + '>';
   }
@@ -376,11 +519,12 @@ Object.extend(Enumerable, {
   entries: Enumerable.toArray
 });
 var $A = Array.from = function(iterable) {
+  if (!iterable) return [];
   if (iterable.toArray) {
     return iterable.toArray();
   } else {
     var results = [];
-    for (var i = 0; i < iterable.length; i++)
+    for (var i = 0, length = iterable.length; i < length; i++)
       results.push(iterable[i]);
     return results;
   }
@@ -388,12 +532,20 @@ var $A = Array.from = function(iterable) {
 
 Object.extend(Array.prototype, Enumerable);
 
+if (!Array.prototype._reverse)
+  Array.prototype._reverse = Array.prototype.reverse;
+
 Object.extend(Array.prototype, {
   _each: function(iterator) {
-    for (var i = 0; i < this.length; i++)
+    for (var i = 0, length = this.length; i < length; i++)
       iterator(this[i]);
   },
 
+  clear: function() {
+    this.length = 0;
+    return this;
+  },
+
   first: function() {
     return this[0];
   },
@@ -404,13 +556,13 @@ Object.extend(Array.prototype, {
 
   compact: function() {
     return this.select(function(value) {
-      return value != undefined || value != null;
+      return value != null;
     });
   },
 
   flatten: function() {
     return this.inject([], function(array, value) {
-      return array.concat(value.constructor == Array ?
+      return array.concat(value && value.constructor == Array ?
         value.flatten() : [value]);
     });
   },
@@ -423,27 +575,97 @@ Object.extend(Array.prototype, {
   },
 
   indexOf: function(object) {
-    for (var i = 0; i < this.length; i++)
+    for (var i = 0, length = this.length; i < length; i++)
       if (this[i] == object) return i;
-    return false;
+    return -1;
   },
 
-  reverse: function() {
-    var result = [];
-    for (var i = this.length; i > 0; i--)
-      result.push(this[i-1]);
-    return result;
+  reverse: function(inline) {
+    return (inline !== false ? this : this.toArray())._reverse();
+  },
+
+  reduce: function() {
+    return this.length > 1 ? this : this[0];
+  },
+
+  uniq: function() {
+    return this.inject([], function(array, value) {
+      return array.include(value) ? array : array.concat([value]);
+    });
+  },
+
+  clone: function() {
+    return [].concat(this);
+  },
+
+  size: function() {
+    return this.length;
   },
 
   inspect: function() {
     return '[' + this.map(Object.inspect).join(', ') + ']';
   }
 });
-var Hash = {
+
+Array.prototype.toArray = Array.prototype.clone;
+
+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 (key in this) {
+    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;
@@ -461,16 +683,30 @@ var Hash = {
   },
 
   merge: function(hash) {
-    return $H(hash).inject($H(this), function(mergedHash, pair) {
+    return $H(hash).inject(this, function(mergedHash, pair) {
       mergedHash[pair.key] = pair.value;
       return mergedHash;
     });
   },
 
+  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) {
-      return pair.map(encodeURIComponent).join('=');
-    }).join('&');
+    return Hash.toQueryString(this);
   },
 
   inspect: function() {
@@ -478,17 +714,15 @@ 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;
-}
-var Range = Class.create();
-Object.extend(Range.prototype, Enumerable);
-Object.extend(Range.prototype, {
+  if (object && object.constructor == Hash) return object;
+  return new Hash(object);
+};
+ObjectRange = Class.create();
+Object.extend(ObjectRange.prototype, Enumerable);
+Object.extend(ObjectRange.prototype, {
   initialize: function(start, end, exclusive) {
     this.start = start;
     this.end = end;
@@ -497,10 +731,10 @@ Object.extend(Range.prototype, {
 
   _each: function(iterator) {
     var value = this.start;
-    do {
+    while (this.include(value)) {
       iterator(value);
       value = value.succ();
-    } while (this.include(value));
+    }
   },
 
   include: function(value) {
@@ -513,15 +747,15 @@ Object.extend(Range.prototype, {
 });
 
 var $R = function(start, end, exclusive) {
-  return new Range(start, end, exclusive);
+  return new ObjectRange(start, end, exclusive);
 }
 
 var Ajax = {
   getTransport: function() {
     return Try.these(
+      function() {return new XMLHttpRequest()},
       function() {return new ActiveXObject('Msxml2.XMLHTTP')},
-      function() {return new ActiveXObject('Microsoft.XMLHTTP')},
-      function() {return new XMLHttpRequest()}
+      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
     ) || false;
   },
 
@@ -535,22 +769,21 @@ Ajax.Responders = {
     this.responders._each(iterator);
   },
 
-  register: function(responderToAdd) {
-    if (!this.include(responderToAdd))
-      this.responders.push(responderToAdd);
+  register: function(responder) {
+    if (!this.include(responder))
+      this.responders.push(responder);
   },
 
-  unregister: function(responderToRemove) {
-    this.responders = this.responders.without(responderToRemove);
+  unregister: function(responder) {
+    this.responders = this.responders.without(responder);
   },
 
   dispatch: function(callback, request, transport, json) {
     this.each(function(responder) {
-      if (responder[callback] && typeof responder[callback] == 'function') {
+      if (typeof responder[callback] == 'function') {
         try {
           responder[callback].apply(responder, [request, transport, json]);
-        } catch (e) {
-        }
+        } catch (e) {}
       }
     });
   }
@@ -562,7 +795,6 @@ Ajax.Responders.register({
   onCreate: function() {
     Ajax.activeRequestCount++;
   },
-
   onComplete: function() {
     Ajax.activeRequestCount--;
   }
@@ -574,19 +806,15 @@ Ajax.Base.prototype = {
     this.options = {
       method:       'post',
       asynchronous: true,
+      contentType:  'application/x-www-form-urlencoded',
+      encoding:     'UTF-8',
       parameters:   ''
     }
     Object.extend(this.options, options || {});
-  },
 
-  responseIsSuccess: function() {
-    return this.transport.status == undefined
-        || this.transport.status == 0
-        || (this.transport.status >= 200 && this.transport.status < 300);
-  },
-
-  responseIsFailure: function() {
-    return !this.responseIsSuccess();
+    this.options.method = this.options.method.toLowerCase();
+    if (typeof this.options.parameters == 'string')
+      this.options.parameters = this.options.parameters.toQueryParams();
   }
 }
 
@@ -595,6 +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);
@@ -602,141 +832,192 @@ Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
   },
 
   request: function(url) {
-    var parameters = this.options.parameters || '';
-    if (parameters.length > 0) parameters += '&_=';
+    this.url = url;
+    this.method = this.options.method;
+    var params = this.options.parameters;
+
+    if (!['get', 'post'].include(this.method)) {
+      // simulate other verbs over post
+      params['_method'] = this.method;
+      this.method = 'post';
+    }
+
+    params = Hash.toQueryString(params);
+    if (params && /Konqueror|Safari|KHTML/.test(navigator.userAgent)) params += '&_='
+
+    // when GET, append parameters to URL
+    if (this.method == 'get' && params)
+      this.url += (this.url.indexOf('?') > -1 ? '&' : '?') + params;
 
     try {
-      this.url = url;
-      if (this.options.method == 'get')
-        this.url += '?' + parameters;
-
       Ajax.Responders.dispatch('onCreate', this, this.transport);
 
-      this.transport.open(this.options.method, this.url,
+      this.transport.open(this.method.toUpperCase(), this.url,
         this.options.asynchronous);
 
-      if (this.options.asynchronous) {
-        this.transport.onreadystatechange = this.onStateChange.bind(this);
-        setTimeout((function() {this.respondToReadyState(1)}).bind(this), 10);
-      }
+      if (this.options.asynchronous)
+        setTimeout(function() { this.respondToReadyState(1) }.bind(this), 10);
 
+      this.transport.onreadystatechange = this.onStateChange.bind(this);
       this.setRequestHeaders();
 
-      var body = this.options.postBody ? this.options.postBody : parameters;
-      this.transport.send(this.options.method == 'post' ? body : null);
+      var body = this.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) {
     }
-  },
-
-  setRequestHeaders: function() {
-    var requestHeaders =
-      ['X-Requested-With', 'XMLHttpRequest',
-       'X-Prototype-Version', Prototype.Version];
-
-    if (this.options.method == 'post') {
-      requestHeaders.push('Content-type',
-        'application/x-www-form-urlencoded');
-
-      /* Force "Connection: close" for Mozilla browsers to work around
-       * a bug where XMLHttpReqeuest sends an incorrect Content-length
-       * header. See Mozilla Bugzilla #246651.
-       */
-      if (this.transport.overrideMimeType)
-        requestHeaders.push('Connection', 'close');
+    catch (e) {
+      this.dispatchException(e);
     }
-
-    if (this.options.requestHeaders)
-      requestHeaders.push.apply(requestHeaders, this.options.requestHeaders);
-
-    for (var i = 0; i < requestHeaders.length; i += 2)
-      this.transport.setRequestHeader(requestHeaders[i], requestHeaders[i+1]);
   },
 
   onStateChange: function() {
     var readyState = this.transport.readyState;
-    if (readyState != 1)
+    if (readyState > 1 && !((readyState == 4) && this._complete))
       this.respondToReadyState(this.transport.readyState);
   },
 
+  setRequestHeaders: function() {
+    var headers = {
+      'X-Requested-With': 'XMLHttpRequest',
+      'X-Prototype-Version': Prototype.Version,
+      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
+    };
+
+    if (this.method == 'post') {
+      headers['Content-type'] = this.options.contentType +
+        (this.options.encoding ? '; charset=' + this.options.encoding : '');
+
+      /* Force "Connection: close" for older Mozilla browsers to work
+       * around a bug where XMLHttpRequest sends an incorrect
+       * Content-length header. See Mozilla Bugzilla #246651.
+       */
+      if (this.transport.overrideMimeType &&
+          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
+            headers['Connection'] = 'close';
+    }
+
+    // user-defined headers
+    if (typeof this.options.requestHeaders == 'object') {
+      var extras = this.options.requestHeaders;
+
+      if (typeof extras.push == 'function')
+        for (var i = 0, length = extras.length; i < length; i += 2)
+          headers[extras[i]] = extras[i+1];
+      else
+        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
+    }
+
+    for (var name in headers)
+      this.transport.setRequestHeader(name, headers[name]);
+  },
+
+  success: function() {
+    return !this.transport.status
+        || (this.transport.status >= 200 && this.transport.status < 300);
+  },
+
+  respondToReadyState: function(readyState) {
+    var state = Ajax.Request.Events[readyState];
+    var transport = this.transport, json = this.evalJSON();
+
+    if (state == 'Complete') {
+      try {
+        this._complete = true;
+        (this.options['on' + this.transport.status]
+         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
+         || Prototype.emptyFunction)(transport, json);
+      } catch (e) {
+        this.dispatchException(e);
+      }
+
+      if ((this.getHeader('Content-type') || 'text/javascript').strip().
+        match(/^(text|application)\/(x-)?(java|ecma)script(;.*)?$/i))
+          this.evalResponse();
+    }
+
+    try {
+      (this.options['on' + state] || Prototype.emptyFunction)(transport, json);
+      Ajax.Responders.dispatch('on' + state, this, transport, json);
+    } catch (e) {
+      this.dispatchException(e);
+    }
+
+    if (state == 'Complete') {
+      // avoid memory leak in MSIE: clean up
+      this.transport.onreadystatechange = Prototype.emptyFunction;
+    }
+  },
+
+  getHeader: function(name) {
+    try {
+      return this.transport.getResponseHeader(name);
+    } catch (e) { return null }
+  },
+
   evalJSON: function() {
     try {
-      var json = this.transport.getResponseHeader('X-JSON'), object;
-      object = eval(json);
-      return object;
+      var json = this.getHeader('X-JSON');
+      return json ? eval('(' + json + ')') : null;
+    } catch (e) { return null }
+  },
+
+  evalResponse: function() {
+    try {
+      return eval(this.transport.responseText);
     } catch (e) {
+      this.dispatchException(e);
     }
   },
 
-  respondToReadyState: function(readyState) {
-    var event = Ajax.Request.Events[readyState];
-    var transport = this.transport, json = this.evalJSON();
-
-    if (event == 'Complete')
-      (this.options['on' + this.transport.status]
-       || this.options['on' + (this.responseIsSuccess() ? 'Success' : 'Failure')]
-       || Prototype.emptyFunction)(transport, json);
-
-    (this.options['on' + event] || Prototype.emptyFunction)(transport, json);
-    Ajax.Responders.dispatch('on' + event, this, transport, json);
-
-    /* Avoid memory leak in MSIE: clean up the oncomplete event handler */
-    if (event == 'Complete')
-      this.transport.onreadystatechange = Prototype.emptyFunction;
+  dispatchException: function(exception) {
+    (this.options.onException || Prototype.emptyFunction)(this, exception);
+    Ajax.Responders.dispatch('onException', this, exception);
   }
 });
 
 Ajax.Updater = Class.create();
-Ajax.Updater.ScriptFragment = '(?:<script.*?>)((\n|.)*?)(?:<\/script>)';
 
 Object.extend(Object.extend(Ajax.Updater.prototype, Ajax.Request.prototype), {
   initialize: function(container, url, options) {
-    this.containers = {
-      success: container.success ? $(container.success) : $(container),
-      failure: container.failure ? $(container.failure) :
-        (container.success ? null : $(container))
+    this.container = {
+      success: (container.success || container),
+      failure: (container.failure || (container.success ? null : container))
     }
 
     this.transport = Ajax.getTransport();
     this.setOptions(options);
 
     var onComplete = this.options.onComplete || Prototype.emptyFunction;
-    this.options.onComplete = (function(transport, object) {
+    this.options.onComplete = (function(transport, param) {
       this.updateContent();
-      onComplete(transport, object);
+      onComplete(transport, param);
     }).bind(this);
 
     this.request(url);
   },
 
   updateContent: function() {
-    var receiver = this.responseIsSuccess() ?
-      this.containers.success : this.containers.failure;
+    var receiver = this.container[this.success() ? 'success' : 'failure'];
+    var response = this.transport.responseText;
 
-    var match    = new RegExp(Ajax.Updater.ScriptFragment, 'img');
-    var response = this.transport.responseText.replace(match, '');
-    var scripts  = this.transport.responseText.match(match);
+    if (!this.options.evalScripts) response = response.stripScripts();
 
-    if (receiver) {
-      if (this.options.insertion) {
+    if (receiver = $(receiver)) {
+      if (this.options.insertion)
         new this.options.insertion(receiver, response);
-      } else {
-        receiver.innerHTML = response;
-      }
+      else
+        receiver.update(response);
     }
 
-    if (this.responseIsSuccess()) {
+    if (this.success()) {
       if (this.onComplete)
         setTimeout(this.onComplete.bind(this), 10);
     }
-
-    if (this.options.evalScripts && scripts) {
-      match = new RegExp(Ajax.Updater.ScriptFragment, 'im');
-      setTimeout((function() {
-        for (var i = 0; i < scripts.length; i++)
-          eval(scripts[i].match(match)[1]);
-      }).bind(this), 10);
-    }
   }
 });
 
@@ -762,7 +1043,7 @@ Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {
   },
 
   stop: function() {
-    this.updater.onComplete = undefined;
+    this.updater.options.onComplete = undefined;
     clearTimeout(this.timer);
     (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
   },
@@ -782,55 +1063,227 @@ Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {
     this.updater = new Ajax.Updater(this.container, this.url, this.options);
   }
 });
-document.getElementsByClassName = function(className, parentElement) {
-  var children = (document.body || $(parentElement)).getElementsByTagName('*');
-  return $A(children).inject([], function(elements, child) {
-    if (Element.hasClassName(child, className))
-      elements.push(child);
+function $(element) {
+  if (arguments.length > 1) {
+    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
+      elements.push($(arguments[i]));
     return elements;
-  });
+  }
+  if (typeof element == 'string')
+    element = document.getElementById(element);
+  return Element.extend(element);
 }
 
+if (Prototype.BrowserFeatures.XPath) {
+  document._getElementsByXPath = function(expression, parentElement) {
+    var results = [];
+    var query = document.evaluate(expression, $(parentElement) || document,
+      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
+    for (var i = 0, length = query.snapshotLength; i < length; i++)
+      results.push(query.snapshotItem(i));
+    return results;
+  };
+}
+
+document.getElementsByClassName = function(className, parentElement) {
+  if (Prototype.BrowserFeatures.XPath) {
+    var q = ".//*[contains(concat(' ', @class, ' '), ' " + className + " ')]";
+    return document._getElementsByXPath(q, parentElement);
+  } else {
+    var children = ($(parentElement) || document.body).getElementsByTagName('*');
+    var elements = [], child;
+    for (var i = 0, length = children.length; i < length; i++) {
+      child = children[i];
+      if (Element.hasClassName(child, className))
+        elements.push(Element.extend(child));
+    }
+    return elements;
+  }
+};
+
 /*--------------------------------------------------------------------------*/
 
-if (!window.Element) {
+if (!window.Element)
   var Element = new Object();
-}
 
-Object.extend(Element, {
+Element.extend = function(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;
+
+    if (element.tagName == 'FORM')
+      Object.extend(methods, Form.Methods);
+    if (['INPUT', 'TEXTAREA', 'SELECT'].include(element.tagName))
+      Object.extend(methods, Form.Element.Methods);
+
+    Object.extend(methods, Element.Methods.Simulated);
+
+    for (var property in methods) {
+      var value = methods[property];
+      if (typeof value == 'function' && !(property in element))
+        element[property] = cache.findOrStore(value);
+    }
+  }
+
+  element._extended = true;
+  return element;
+};
+
+Element.extend.cache = {
+  findOrStore: function(value) {
+    return this[value] = this[value] || function() {
+      return value.apply(null, [this].concat($A(arguments)));
+    }
+  }
+};
+
+Element.Methods = {
   visible: function(element) {
     return $(element).style.display != 'none';
   },
 
-  toggle: function() {
-    for (var i = 0; i < arguments.length; i++) {
-      var element = $(arguments[i]);
-      Element[Element.visible(element) ? 'hide' : 'show'](element);
-    }
+  toggle: function(element) {
+    element = $(element);
+    Element[Element.visible(element) ? 'hide' : 'show'](element);
+    return element;
   },
 
-  hide: function() {
-    for (var i = 0; i < arguments.length; i++) {
-      var element = $(arguments[i]);
-      element.style.display = 'none';
-    }
+  hide: function(element) {
+    $(element).style.display = 'none';
+    return element;
   },
 
-  show: function() {
-    for (var i = 0; i < arguments.length; i++) {
-      var element = $(arguments[i]);
-      element.style.display = '';
-    }
+  show: function(element) {
+    $(element).style.display = '';
+    return element;
   },
 
   remove: function(element) {
     element = $(element);
     element.parentNode.removeChild(element);
+    return element;
+  },
+
+  update: function(element, html) {
+    html = typeof html == 'undefined' ? '' : html.toString();
+    $(element).innerHTML = html.stripScripts();
+    setTimeout(function() {html.evalScripts()}, 10);
+    return element;
+  },
+
+  replace: function(element, html) {
+    element = $(element);
+    html = typeof html == 'undefined' ? '' : html.toString();
+    if (element.outerHTML) {
+      element.outerHTML = html.stripScripts();
+    } else {
+      var range = element.ownerDocument.createRange();
+      range.selectNodeContents(element);
+      element.parentNode.replaceChild(
+        range.createContextualFragment(html.stripScripts()), element);
+    }
+    setTimeout(function() {html.evalScripts()}, 10);
+    return element;
+  },
+
+  inspect: function(element) {
+    element = $(element);
+    var result = '<' + element.tagName.toLowerCase();
+    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
+      var property = pair.first(), attribute = pair.last();
+      var value = (element[property] || '').toString();
+      if (value) result += ' ' + attribute + '=' + value.inspect(true);
+    });
+    return result + '>';
+  },
+
+  recursivelyCollect: function(element, property) {
+    element = $(element);
+    var elements = [];
+    while (element = element[property])
+      if (element.nodeType == 1)
+        elements.push(Element.extend(element));
+    return elements;
+  },
+
+  ancestors: function(element) {
+    return $(element).recursivelyCollect('parentNode');
+  },
+
+  descendants: function(element) {
+    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) {
+    return $(element).recursivelyCollect('previousSibling');
+  },
+
+  nextSiblings: function(element) {
+    return $(element).recursivelyCollect('nextSibling');
+  },
+
+  siblings: function(element) {
+    element = $(element);
+    return element.previousSiblings().reverse().concat(element.nextSiblings());
+  },
+
+  match: function(element, selector) {
+    if (typeof selector == 'string')
+      selector = new Selector(selector);
+    return selector.match($(element));
+  },
+
+  up: function(element, expression, index) {
+    return Selector.findElement($(element).ancestors(), expression, index);
+  },
+
+  down: function(element, expression, index) {
+    return Selector.findElement($(element).descendants(), expression, index);
+  },
+
+  previous: function(element, expression, index) {
+    return Selector.findElement($(element).previousSiblings(), expression, index);
+  },
+
+  next: function(element, expression, index) {
+    return Selector.findElement($(element).nextSiblings(), expression, index);
+  },
+
+  getElementsBySelector: function() {
+    var args = $A(arguments), element = $(args.shift());
+    return Selector.findChildElements(element, args);
+  },
+
+  getElementsByClassName: function(element, className) {
+    return document.getElementsByClassName(className, element);
+  },
+
+  readAttribute: function(element, name) {
+    element = $(element);
+    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) {
-    element = $(element);
-    return element.offsetHeight;
+    return $(element).getDimensions().height;
+  },
+
+  getWidth: function(element) {
+    return $(element).getDimensions().width;
   },
 
   classNames: function(element) {
@@ -839,61 +1292,131 @@ Object.extend(Element, {
 
   hasClassName: function(element, className) {
     if (!(element = $(element))) return;
-    return Element.classNames(element).include(className);
+    var elementClassName = element.className;
+    if (elementClassName.length == 0) return false;
+    if (elementClassName == className ||
+        elementClassName.match(new RegExp("(^|\\s)" + className + "(\\s|$)")))
+      return true;
+    return false;
   },
 
   addClassName: function(element, className) {
     if (!(element = $(element))) return;
-    return Element.classNames(element).add(className);
+    Element.classNames(element).add(className);
+    return element;
   },
 
   removeClassName: function(element, className) {
     if (!(element = $(element))) return;
-    return Element.classNames(element).remove(className);
+    Element.classNames(element).remove(className);
+    return element;
+  },
+
+  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();
+  },
+
+  stopObserving: function() {
+    Event.stopObserving.apply(Event, arguments);
+    return $A(arguments).first();
   },
 
   // removes whitespace-only text node children
   cleanWhitespace: function(element) {
     element = $(element);
-    for (var i = 0; i < element.childNodes.length; i++) {
-      var node = element.childNodes[i];
+    var node = element.firstChild;
+    while (node) {
+      var nextNode = node.nextSibling;
       if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
-        Element.remove(node);
+        element.removeChild(node);
+      node = nextNode;
     }
+    return element;
   },
 
   empty: function(element) {
     return $(element).innerHTML.match(/^\s*$/);
   },
 
+  descendantOf: function(element, ancestor) {
+    element = $(element), ancestor = $(ancestor);
+    while (element = element.parentNode)
+      if (element == ancestor) return true;
+    return false;
+  },
+
   scrollTo: function(element) {
     element = $(element);
-    var x = element.x ? element.x : element.offsetLeft,
-        y = element.y ? element.y : element.offsetTop;
-    window.scrollTo(x, y);
+    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) {
+      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,
@@ -901,12 +1424,13 @@ Object.extend(Element, {
     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};
@@ -925,6 +1449,7 @@ Object.extend(Element, {
         element.style.left = 0;
       }
     }
+    return element;
   },
 
   undoPositioned: function(element) {
@@ -937,24 +1462,153 @@ Object.extend(Element, {
         element.style.bottom =
         element.style.right = '';
     }
+    return element;
   },
 
   makeClipping: function(element) {
     element = $(element);
-    if (element._overflow) return;
-    element._overflow = element.style.overflow;
+    if (element._overflow) return element;
+    element._overflow = element.style.overflow || 'auto';
     if ((Element.getStyle(element, 'overflow') || 'visible') != 'hidden')
       element.style.overflow = 'hidden';
+    return element;
   },
 
   undoClipping: function(element) {
     element = $(element);
-    if (element._overflow) return;
-    element.style.overflow = element._overflow;
-    element._overflow = undefined;
+    if (!element._overflow) return element;
+    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
+    element._overflow = null;
+    return element;
   }
+};
+
+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 && !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'].include(tagName)) {
+      var div = document.createElement('div');
+      switch (tagName) {
+        case 'THEAD':
+        case 'TBODY':
+          div.innerHTML = '<table><tbody>' +  html.stripScripts() + '</tbody></table>';
+          depth = 2;
+          break;
+        case 'TR':
+          div.innerHTML = '<table><tbody><tr>' +  html.stripScripts() + '</tr></tbody></table>';
+          depth = 3;
+          break;
+        case 'TD':
+          div.innerHTML = '<table><tbody><tr><td>' +  html.stripScripts() + '</td></tr></tbody></table>';
+          depth = 4;
+      }
+      $A(element.childNodes).each(function(node){
+        element.removeChild(node)
+      });
+      depth.times(function(){ div = div.firstChild });
+
+      $A(div.childNodes).each(
+        function(node){ element.appendChild(node) });
+    } else {
+      element.innerHTML = html.stripScripts();
+    }
+    setTimeout(function() {html.evalScripts()}, 10);
+    return element;
+  }
+};
+
+Object.extend(Element, Element.Methods);
+
+var _nativeExtensions = false;
+
+if(/Konqueror|Safari|KHTML/.test(navigator.userAgent))
+  ['', 'Form', 'Input', 'TextArea', 'Select'].each(function(tag) {
+    var className = 'HTML' + tag + 'Element';
+    if(window[className]) return;
+    var klass = window[className] = {};
+    klass.prototype = document.createElement(tag ? tag.toLowerCase() : 'div').__proto__;
+  });
+
+Element.addMethods = function(methods) {
+  Object.extend(Element.Methods, methods || {});
+
+  function copy(methods, destination, onlyIfAbsent) {
+    onlyIfAbsent = onlyIfAbsent || false;
+    var cache = Element.extend.cache;
+    for (var property in methods) {
+      var value = methods[property];
+      if (!onlyIfAbsent || !(property in destination))
+        destination[property] = cache.findOrStore(value);
+    }
+  }
+
+  if (typeof HTMLElement != 'undefined') {
+    copy(Element.Methods, HTMLElement.prototype);
+    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
+    copy(Form.Methods, HTMLFormElement.prototype);
+    [HTMLInputElement, HTMLTextAreaElement, HTMLSelectElement].each(function(klass) {
+      copy(Form.Element.Methods, klass.prototype);
+    });
+    _nativeExtensions = true;
+  }
+}
+
 var Toggle = new Object();
 Toggle.display = Element.toggle;
 
@@ -967,13 +1621,14 @@ Abstract.Insertion = function(adjacency) {
 Abstract.Insertion.prototype = {
   initialize: function(element, content) {
     this.element = $(element);
-    this.content = content;
+    this.content = content.stripScripts();
 
     if (this.adjacency && this.element.insertAdjacentHTML) {
       try {
         this.element.insertAdjacentHTML(this.adjacency, this.content);
       } catch (e) {
-        if (this.element.tagName.toLowerCase() == 'tbody') {
+        var tagName = this.element.tagName.toUpperCase();
+        if (['TBODY', 'TR'].include(tagName)) {
           this.insertContent(this.contentFromAnonymousTable());
         } else {
           throw e;
@@ -984,6 +1639,8 @@ Abstract.Insertion.prototype = {
       if (this.initializeRange) this.initializeRange();
       this.insertContent([this.range.createContextualFragment(this.content)]);
     }
+
+    setTimeout(function() {content.evalScripts()}, 10);
   },
 
   contentFromAnonymousTable: function() {
@@ -1016,7 +1673,7 @@ Insertion.Top.prototype = Object.extend(new Abstract.Insertion('afterBegin'), {
   },
 
   insertContent: function(fragments) {
-    fragments.reverse().each((function(fragment) {
+    fragments.reverse(false).each((function(fragment) {
       this.element.insertBefore(fragment, this.element.firstChild);
     }).bind(this));
   }
@@ -1070,211 +1727,358 @@ Element.ClassNames.prototype = {
 
   add: function(classNameToAdd) {
     if (this.include(classNameToAdd)) return;
-    this.set(this.toArray().concat(classNameToAdd).join(' '));
+    this.set($A(this).concat(classNameToAdd).join(' '));
   },
 
   remove: function(classNameToRemove) {
     if (!this.include(classNameToRemove)) return;
-    this.set(this.select(function(className) {
-      return className != classNameToRemove;
-    }));
+    this.set($A(this).without(classNameToRemove).join(' '));
   },
 
   toString: function() {
-    return this.toArray().join(' ');
+    return $A(this).join(' ');
   }
-}
+};
 
 Object.extend(Element.ClassNames.prototype, Enumerable);
-var Field = {
-  clear: function() {
-    for (var i = 0; i < arguments.length; i++)
-      $(arguments[i]).value = '';
+var Selector = Class.create();
+Selector.prototype = {
+  initialize: function(expression) {
+    this.params = {classNames: []};
+    this.expression = expression.toString().strip();
+    this.parseExpression();
+    this.compileMatcher();
   },
 
-  focus: function(element) {
-    $(element).focus();
+  parseExpression: function() {
+    function abort(message) { throw 'Parse error in selector: ' + message; }
+
+    if (this.expression == '')  abort('empty expression');
+
+    var params = this.params, expr = this.expression, match, modifier, clause, rest;
+    while (match = expr.match(/^(.*)\[([a-z0-9_:-]+?)(?:([~\|!]?=)(?:"([^"]*)"|([^\]\s]*)))?\]$/i)) {
+      params.attributes = params.attributes || [];
+      params.attributes.push({name: match[2], operator: match[3], value: match[4] || match[5] || ''});
+      expr = match[1];
+    }
+
+    if (expr == '*') return this.params.wildcard = true;
+
+    while (match = expr.match(/^([^a-z0-9_-])?([a-z0-9_-]+)(.*)/i)) {
+      modifier = match[1], clause = match[2], rest = match[3];
+      switch (modifier) {
+        case '#':       params.id = clause; break;
+        case '.':       params.classNames.push(clause); break;
+        case '':
+        case undefined: params.tagName = clause.toUpperCase(); break;
+        default:        abort(expr.inspect());
+      }
+      expr = rest;
+    }
+
+    if (expr.length > 0) abort(expr.inspect());
   },
 
-  present: function() {
-    for (var i = 0; i < arguments.length; i++)
-      if ($(arguments[i]).value == '') return false;
-    return true;
+  buildMatchExpression: function() {
+    var params = this.params, conditions = [], clause;
+
+    if (params.wildcard)
+      conditions.push('true');
+    if (clause = params.id)
+      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, length = clause.length; i < length; i++)
+        conditions.push('element.hasClassName(' + clause[i].inspect() + ')');
+    if (clause = params.attributes) {
+      clause.each(function(attribute) {
+        var value = 'element.readAttribute(' + attribute.name.inspect() + ')';
+        var splitValueBy = function(delimiter) {
+          return value + ' && ' + value + '.split(' + delimiter.inspect() + ')';
+        }
+
+        switch (attribute.operator) {
+          case '=':       conditions.push(value + ' == ' + attribute.value.inspect()); break;
+          case '~=':      conditions.push(splitValueBy(' ') + '.include(' + attribute.value.inspect() + ')'); break;
+          case '|=':      conditions.push(
+                            splitValueBy('-') + '.first().toUpperCase() == ' + attribute.value.toUpperCase().inspect()
+                          ); break;
+          case '!=':      conditions.push(value + ' != ' + attribute.value.inspect()); break;
+          case '':
+          case undefined: conditions.push('element.hasAttribute(' + attribute.name.inspect() + ')'); break;
+          default:        throw 'Unknown operator ' + attribute.operator + ' in selector';
+        }
+      });
+    }
+
+    return conditions.join(' && ');
   },
 
-  select: function(element) {
-    $(element).select();
+  compileMatcher: function() {
+    this.match = new Function('element', 'if (!element.tagName) return false; \
+      element = $(element); \
+      return ' + this.buildMatchExpression());
   },
 
-  activate: function(element) {
-    $(element).focus();
-    $(element).select();
+  findElements: function(scope) {
+    var element;
+
+    if (element = $(this.params.id))
+      if (this.match(element))
+        if (!scope || Element.childOf(element, scope))
+          return [element];
+
+    scope = (scope || document).getElementsByTagName(this.params.tagName || '*');
+
+    var results = [];
+    for (var i = 0, length = scope.length; i < length; i++)
+      if (this.match(element = scope[i]))
+        results.push(Element.extend(element));
+
+    return results;
+  },
+
+  toString: function() {
+    return this.expression;
   }
 }
 
-/*--------------------------------------------------------------------------*/
+Object.extend(Selector, {
+  matchElements: function(elements, expression) {
+    var selector = new Selector(expression);
+    return elements.select(selector.match.bind(selector)).map(Element.extend);
+  },
 
+  findElement: function(elements, expression, index) {
+    if (typeof expression == 'number') index = expression, expression = false;
+    return Selector.matchElements(elements, expression || '*')[index || 0];
+  },
+
+  findChildElements: function(element, expressions) {
+    return expressions.map(function(expression) {
+      return expression.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));
+        });
+      });
+    }).flatten();
+  }
+});
+
+function $$() {
+  return Selector.findChildElements(document, $A(arguments));
+}
 var Form = {
-  serialize: function(form) {
-    var elements = Form.getElements($(form));
-    var queryComponents = new Array();
+  reset: function(form) {
+    $(form).reset();
+    return form;
+  },
 
-    for (var i = 0; i < elements.length; i++) {
-      var queryComponent = Form.Element.serialize(elements[i]);
-      if (queryComponent)
-        queryComponents.push(queryComponent);
-    }
+  serializeElements: function(elements, 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 queryComponents.join('&');
+    return getHash ? data : Hash.toQueryString(data);
+  }
+};
+
+Form.Methods = {
+  serialize: function(form, getHash) {
+    return Form.serializeElements(Form.getElements(form), getHash);
   },
 
   getElements: function(form) {
-    var form = $(form);
-    var elements = new Array();
-
-    for (tagName in Form.Element.Serializers) {
-      var tagElements = form.getElementsByTagName(tagName);
-      for (var j = 0; j < tagElements.length; j++)
-        elements.push(tagElements[j]);
-    }
-    return elements;
+    return $A($(form).getElementsByTagName('*')).inject([],
+      function(elements, child) {
+        if (Form.Element.Serializers[child.tagName.toLowerCase()])
+          elements.push(Element.extend(child));
+        return elements;
+      }
+    );
   },
 
   getInputs: function(form, typeName, name) {
-    var form = $(form);
+    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; i < inputs.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(input);
+      matchingInputs.push(Element.extend(input));
     }
 
     return matchingInputs;
   },
 
   disable: function(form) {
-    var elements = Form.getElements(form);
-    for (var i = 0; i < elements.length; i++) {
-      var element = elements[i];
+    form = $(form);
+    form.getElements().each(function(element) {
       element.blur();
       element.disabled = 'true';
-    }
+    });
+    return form;
   },
 
   enable: function(form) {
-    var elements = Form.getElements(form);
-    for (var i = 0; i < elements.length; i++) {
-      var element = elements[i];
+    form = $(form);
+    form.getElements().each(function(element) {
       element.disabled = '';
-    }
+    });
+    return form;
+  },
+
+  findFirstElement: function(form) {
+    return $(form).getElements().find(function(element) {
+      return element.type != 'hidden' && !element.disabled &&
+        ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
+    });
   },
 
   focusFirstElement: function(form) {
-    var form = $(form);
-    var elements = Form.getElements(form);
-    for (var i = 0; i < elements.length; i++) {
-      var element = elements[i];
-      if (element.type != 'hidden' && !element.disabled) {
-        Field.activate(element);
-        break;
-      }
-    }
-  },
-
-  reset: function(form) {
-    $(form).reset();
+    form = $(form);
+    form.findFirstElement().activate();
+    return form;
   }
 }
 
-Form.Element = {
-  serialize: function(element) {
-    var element = $(element);
-    var method = element.tagName.toLowerCase();
-    var parameter = Form.Element.Serializers[method](element);
+Object.extend(Form, Form.Methods);
 
-    if (parameter)
-      return encodeURIComponent(parameter[0]) + '=' +
-        encodeURIComponent(parameter[1]);
+/*--------------------------------------------------------------------------*/
+
+Form.Element = {
+  focus: function(element) {
+    $(element).focus();
+    return element;
+  },
+
+  select: function(element) {
+    $(element).select();
+    return element;
+  }
+}
+
+Form.Element.Methods = {
+  serialize: function(element) {
+    element = $(element);
+    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) {
-    var element = $(element);
+    element = $(element);
     var method = element.tagName.toLowerCase();
-    var parameter = Form.Element.Serializers[method](element);
+    return Form.Element.Serializers[method](element);
+  },
 
-    if (parameter)
-      return parameter[1];
+  clear: function(element) {
+    $(element).value = '';
+    return element;
+  },
+
+  present: function(element) {
+    return $(element).value != '';
+  },
+
+  activate: function(element) {
+    element = $(element);
+    element.focus();
+    if (element.select && ( element.tagName.toLowerCase() != 'input' ||
+      !['button', 'reset', 'submit'].include(element.type) ) )
+      element.select();
+    return element;
+  },
+
+  disable: function(element) {
+    element = $(element);
+    element.disabled = true;
+    return element;
+  },
+
+  enable: function(element) {
+    element = $(element);
+    element.blur();
+    element.disabled = false;
+    return element;
   }
 }
 
+Object.extend(Form.Element, Form.Element.Methods);
+var Field = Form.Element;
+var $F = Form.Element.getValue;
+
+/*--------------------------------------------------------------------------*/
+
 Form.Element.Serializers = {
   input: function(element) {
     switch (element.type.toLowerCase()) {
-      case 'submit':
-      case 'hidden':
-      case 'password':
-      case 'text':
-        return Form.Element.Serializers.textarea(element);
       case 'checkbox':
       case 'radio':
         return Form.Element.Serializers.inputSelector(element);
+      default:
+        return Form.Element.Serializers.textarea(element);
     }
-    return false;
   },
 
   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.options[index];
-      value = opt.value;
-      if (!value && !('value' in 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 = new Array();
-    for (var i = 0; i < element.length; i++) {
+    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) {
-        var optValue = opt.value;
-        if (!optValue && !('value' in opt))
-          optValue = opt.text;
-        value.push(optValue);
-      }
+      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) {
@@ -1292,7 +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;
     }
@@ -1337,9 +2143,7 @@ Abstract.EventObserver.prototype = {
   },
 
   registerFormCallbacks: function() {
-    var elements = Form.getElements(this.element);
-    for (var i = 0; i < elements.length; i++)
-      this.registerCallback(elements[i]);
+    Form.getElements(this.element).each(this.registerCallback.bind(this));
   },
 
   registerCallback: function(element) {
@@ -1347,24 +2151,10 @@ Abstract.EventObserver.prototype = {
       switch (element.type.toLowerCase()) {
         case 'checkbox':
         case 'radio':
-          element.target = this;
-          element.prev_onclick = element.onclick || Prototype.emptyFunction;
-          element.onclick = function() {
-            this.prev_onclick();
-            this.target.onElementEvent();
-          }
+          Event.observe(element, 'click', this.onElementEvent.bind(this));
           break;
-        case 'password':
-        case 'text':
-        case 'textarea':
-        case 'select-one':
-        case 'select-multiple':
-          element.target = this;
-          element.prev_onchange = element.onchange || Prototype.emptyFunction;
-          element.onchange = function() {
-            this.prev_onchange();
-            this.target.onElementEvent();
-          }
+        default:
+          Event.observe(element, 'change', this.onElementEvent.bind(this));
           break;
       }
     }
@@ -1398,6 +2188,10 @@ Object.extend(Event, {
   KEY_RIGHT:    39,
   KEY_DOWN:     40,
   KEY_DELETE:   46,
+  KEY_HOME:     36,
+  KEY_END:      35,
+  KEY_PAGEUP:   33,
+  KEY_PAGEDOWN: 34,
 
   element: function(event) {
     return event.target || event.srcElement;
@@ -1453,7 +2247,7 @@ Object.extend(Event, {
 
   unloadCache: function() {
     if (!Event.observers) return;
-    for (var i = 0; i < Event.observers.length; i++) {
+    for (var i = 0, length = Event.observers.length; i < length; i++) {
       Event.stopObserving.apply(this, Event.observers[i]);
       Event.observers[i][0] = null;
     }
@@ -1461,7 +2255,7 @@ Object.extend(Event, {
   },
 
   observe: function(element, name, observer, useCapture) {
-    var element = $(element);
+    element = $(element);
     useCapture = useCapture || false;
 
     if (name == 'keypress' &&
@@ -1469,11 +2263,11 @@ Object.extend(Event, {
         || element.attachEvent))
       name = 'keydown';
 
-    this._observeAndCache(element, name, observer, useCapture);
+    Event._observeAndCache(element, name, observer, useCapture);
   },
 
   stopObserving: function(element, name, observer, useCapture) {
-    var element = $(element);
+    element = $(element);
     useCapture = useCapture || false;
 
     if (name == 'keypress' &&
@@ -1484,13 +2278,16 @@ Object.extend(Event, {
     if (element.removeEventListener) {
       element.removeEventListener(name, observer, useCapture);
     } else if (element.detachEvent) {
-      element.detachEvent('on' + name, observer);
+      try {
+        element.detachEvent('on' + name, observer);
+      } catch (e) {}
     }
   }
 });
 
 /* prevent memory leaks in IE */
-Event.observe(window, 'unload', Event.unloadCache, false);
+if (navigator.appVersion.match(/\bMSIE\b/))
+  Event.observe(window, 'unload', Event.unloadCache, false);
 var Position = {
   // set to true if needed, warning: firefox performance problems
   // NOT neeeded for page scrolling, only if draggable contained in
@@ -1537,7 +2334,8 @@ var Position = {
       valueL += element.offsetLeft || 0;
       element = element.offsetParent;
       if (element) {
-        p = Element.getStyle(element, 'position');
+        if(element.tagName=='BODY') break;
+        var p = Element.getStyle(element, 'position');
         if (p == 'relative' || p == 'absolute') break;
       }
     } while (element);
@@ -1593,17 +2391,6 @@ var Position = {
         element.offsetWidth;
   },
 
-  clone: function(source, target) {
-    source = $(source);
-    target = $(target);
-    target.style.position = 'absolute';
-    var offsets = this.cumulativeOffset(source);
-    target.style.top    = offsets[1] + 'px';
-    target.style.left   = offsets[0] + 'px';
-    target.style.width  = source.offsetWidth + 'px';
-    target.style.height = source.offsetHeight + 'px';
-  },
-
   page: function(forElement) {
     var valueT = 0, valueL = 0;
 
@@ -1620,8 +2407,10 @@ var Position = {
 
     element = forElement;
     do {
-      valueT -= element.scrollTop  || 0;
-      valueL -= element.scrollLeft || 0;
+      if (!window.opera || element.tagName=='BODY') {
+        valueT -= element.scrollTop  || 0;
+        valueL -= element.scrollLeft || 0;
+      }
     } while (element = element.parentNode);
 
     return [valueL, valueT];
@@ -1682,10 +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) {
@@ -1721,4 +2510,6 @@ if (/Konqueror|Safari|KHTML/.test(navigator.userAgent)) {
 
     return [valueL, valueT];
   }
-}
\ No newline at end of file
+}
+
+Element.addMethods();
\ No newline at end of file
diff --git a/script/about b/script/about
new file mode 100755
index 00000000..7b07d46a
--- /dev/null
+++ b/script/about
@@ -0,0 +1,3 @@
+#!/usr/bin/env ruby
+require File.dirname(__FILE__) + '/../config/boot'
+require 'commands/about'
\ No newline at end of file
diff --git a/script/performance/benchmarker b/script/performance/benchmarker
new file mode 100755
index 00000000..c842d35d
--- /dev/null
+++ b/script/performance/benchmarker
@@ -0,0 +1,3 @@
+#!/usr/bin/env ruby
+require File.dirname(__FILE__) + '/../../config/boot'
+require 'commands/performance/benchmarker'
diff --git a/script/performance/profiler b/script/performance/profiler
new file mode 100755
index 00000000..d855ac8b
--- /dev/null
+++ b/script/performance/profiler
@@ -0,0 +1,3 @@
+#!/usr/bin/env ruby
+require File.dirname(__FILE__) + '/../../config/boot'
+require 'commands/performance/profiler'
diff --git a/script/plugin b/script/plugin
new file mode 100755
index 00000000..26ca64c0
--- /dev/null
+++ b/script/plugin
@@ -0,0 +1,3 @@
+#!/usr/bin/env ruby
+require File.dirname(__FILE__) + '/../config/boot'
+require 'commands/plugin'
\ No newline at end of file
diff --git a/script/process/inspector b/script/process/inspector
new file mode 100755
index 00000000..bf25ad86
--- /dev/null
+++ b/script/process/inspector
@@ -0,0 +1,3 @@
+#!/usr/bin/env ruby
+require File.dirname(__FILE__) + '/../../config/boot'
+require 'commands/process/inspector'
diff --git a/script/process/reaper b/script/process/reaper
new file mode 100755
index 00000000..c77f0453
--- /dev/null
+++ b/script/process/reaper
@@ -0,0 +1,3 @@
+#!/usr/bin/env ruby
+require File.dirname(__FILE__) + '/../../config/boot'
+require 'commands/process/reaper'
diff --git a/script/process/spawner b/script/process/spawner
new file mode 100755
index 00000000..7118f398
--- /dev/null
+++ b/script/process/spawner
@@ -0,0 +1,3 @@
+#!/usr/bin/env ruby
+require File.dirname(__FILE__) + '/../../config/boot'
+require 'commands/process/spawner'
diff --git a/vendor/plugins/form_spam_protection/README b/vendor/plugins/form_spam_protection/README
new file mode 100644
index 00000000..1b0ce210
--- /dev/null
+++ b/vendor/plugins/form_spam_protection/README
@@ -0,0 +1,32 @@
+FormSpamProtection 
+==================
+
+Tired of forms in your web application getting spammed? Captcha works but is a
+pain. This plugin ensures a real person is submitting the form without
+requiring anything from the user except that they have Javascript turned on.
+
+This plugin uses the Hivelogic Enkoder, normally used to protect spambots from
+harvesting e-mail addresses, to enkode a hidden field on the form. That field
+is required when the user submits the form or they get an error.
+
+To install: 
+  ./script/plugin install -x http://form-spam-protection.googlecode.com/svn/form_spam_protection/
+
+To use: In your controller, just add: 
+  protect_forms_from_spam
+
+You can also specify :only or :except just like a before filter:
+  protect_forms_from_spam :only => :index
+
+In fact, it is just a before filter. To protect only the form in one action
+and the handling (but not the form) in another, do this:
+  before_filter :protect_form_from_spam, :only => :new
+  before_filter :protect_form_handler_from_spam, :only => :create
+...though this is seldom necessary.
+
+Bugs:
+Please submit bugs through the tracker at http://code.google.com/p/form-spam-protection/issues/list
+
+TODO:
+* Add <noscript> tags to the form to display the "you must have Javascript on" message
+* Make messages and resubmit limit configurable
\ No newline at end of file
diff --git a/vendor/plugins/form_spam_protection/Rakefile b/vendor/plugins/form_spam_protection/Rakefile
new file mode 100644
index 00000000..42dd96cb
--- /dev/null
+++ b/vendor/plugins/form_spam_protection/Rakefile
@@ -0,0 +1,22 @@
+require 'rake'
+require 'rake/testtask'
+require 'rake/rdoctask'
+
+desc 'Default: run unit tests.'
+task :default => :test
+
+desc 'Test the form_spam_protection plugin.'
+Rake::TestTask.new(:test) do |t|
+  t.libs << 'lib'
+  t.pattern = 'test/**/*_test.rb'
+  t.verbose = true
+end
+
+desc 'Generate documentation for the form_spam_protection plugin.'
+Rake::RDocTask.new(:rdoc) do |rdoc|
+  rdoc.rdoc_dir = 'rdoc'
+  rdoc.title    = 'FormSpamProtection'
+  rdoc.options << '--line-numbers' << '--inline-source'
+  rdoc.rdoc_files.include('README')
+  rdoc.rdoc_files.include('lib/**/*.rb')
+end
diff --git a/vendor/plugins/form_spam_protection/init.rb b/vendor/plugins/form_spam_protection/init.rb
new file mode 100644
index 00000000..3a60e7d9
--- /dev/null
+++ b/vendor/plugins/form_spam_protection/init.rb
@@ -0,0 +1,4 @@
+require 'form_spam_protection'
+require File.join(File.dirname(__FILE__), 'vendor/enkoder/lib/enkoder')
+require File.join(File.dirname(__FILE__), "/test/mocks/enkoder") if RAILS_ENV == 'test'
+ActionController::Base.send :include, FormSpamProtection
\ No newline at end of file
diff --git a/vendor/plugins/form_spam_protection/install.rb b/vendor/plugins/form_spam_protection/install.rb
new file mode 100644
index 00000000..f7732d37
--- /dev/null
+++ b/vendor/plugins/form_spam_protection/install.rb
@@ -0,0 +1 @@
+# Install hook code here
diff --git a/vendor/plugins/form_spam_protection/lib/form_spam_protection.rb b/vendor/plugins/form_spam_protection/lib/form_spam_protection.rb
new file mode 100644
index 00000000..8df38835
--- /dev/null
+++ b/vendor/plugins/form_spam_protection/lib/form_spam_protection.rb
@@ -0,0 +1,36 @@
+require 'form_tag_helper_extensions'
+module FormSpamProtection
+  module ClassMethods
+    def protect_forms_from_spam(*args)
+      before_filter :protect_form_from_spam, *args
+      before_filter :protect_form_handler_from_spam, *args
+    end
+  end
+
+  def protect_form_from_spam
+      @protect_form_from_spam = true
+  end
+  
+  def protect_form_handler_from_spam
+    unless request.get? || request.xml_http_request?
+      if params[:_form_key] && session[:form_keys] && session[:form_keys].keys.include?(params[:_form_key])
+        session[:form_keys][params[:_form_key]] += 1
+        if session[:form_keys][params[:_form_key]] >= 4
+          render :text => "You cannot resubmit this form again.", :layout => false, :status => 403
+          return false
+        end
+      else
+        render :text => "You must have Javascript on to submit this form.", :layout => false, :status => 403
+        return false
+      end
+    end
+  end
+  
+  extend ClassMethods
+  
+  def self.included(receiver)
+    receiver.extend(ClassMethods)
+  end
+  
+  
+end
\ No newline at end of file
diff --git a/vendor/plugins/form_spam_protection/lib/form_tag_helper_extensions.rb b/vendor/plugins/form_spam_protection/lib/form_tag_helper_extensions.rb
new file mode 100644
index 00000000..18e3d172
--- /dev/null
+++ b/vendor/plugins/form_spam_protection/lib/form_tag_helper_extensions.rb
@@ -0,0 +1,56 @@
+require 'digest/sha1'
+module ActionView
+  module Helpers
+    module TagHelper
+      # Now that form_tag accepts blocks, it was easier to alias tag when name == :form
+      def tag_with_form_spam_protection(name, *args)
+        returning tag_without_form_spam_protection(name, *args) do |out|
+          if name == :form && @protect_form_from_spam
+            session[:form_keys] ||= {}
+            form_key = Digest::SHA1.hexdigest(self.object_id.to_s + rand.to_s)
+            session[:form_keys][form_key] = 0
+            out << enkode(hidden_field_tag('_form_key', form_key))
+          end
+        end
+      end
+      
+      alias_method :tag_without_form_spam_protection, :tag
+      alias_method :tag, :tag_with_form_spam_protection
+    end
+    
+    # module FormTagHelper
+    #   def form_tag_with_spam_protection(*args, &proc)
+    #     form_tag_method_with_spam_protection :form_tag, *args, &proc
+    #   end
+    #   
+    #   # alias_method_chain :form_tag, :spam_protection
+    #   alias_method :form_tag_without_spam_protection, :form_tag
+    #   alias_method :form_tag, :form_tag_with_spam_protection
+    #   
+    #   protected
+    #     def form_tag_method_with_spam_protection(method_name, *args, &proc)
+    #       old_method_name = "#{method_name}_without_spam_protection"
+    #       returning send(old_method_name, *args) do |out|
+    #         if @protect_form_from_spam
+    #           session[:form_keys] ||= {}
+    #           form_key = Digest::SHA1.hexdigest(self.object_id.to_s + rand.to_s)
+    #           session[:form_keys][form_key] = 0
+    #           out << enkode(hidden_field_tag('_form_key', form_key))
+    #         end
+    #       end
+    #     end
+    #     
+    # 
+    # end
+    #
+    # module PrototypeHelper
+    #   def form_remote_tag_with_spam_protection(*args, &proc)
+    #     form_tag_method_with_spam_protection :form_remote_tag, *args, &proc
+    #   end
+    # 
+    #   # alias_method_chain :form_remote_tag, :spam_protection
+    #   alias_method :form_remote_tag_without_spam_protection, :form_remote_tag
+    #   alias_method :form_remote_tag, :form_remote_tag_with_spam_protection
+    # end
+  end
+end
\ No newline at end of file
diff --git a/vendor/plugins/form_spam_protection/tasks/form_spam_protection_tasks.rake b/vendor/plugins/form_spam_protection/tasks/form_spam_protection_tasks.rake
new file mode 100644
index 00000000..67a67f95
--- /dev/null
+++ b/vendor/plugins/form_spam_protection/tasks/form_spam_protection_tasks.rake
@@ -0,0 +1,4 @@
+# desc "Explaining what the task does"
+# task :form_spam_protection do
+#   # Task goes here
+# end
\ No newline at end of file
diff --git a/vendor/plugins/form_spam_protection/test/form_spam_protection_test.rb b/vendor/plugins/form_spam_protection/test/form_spam_protection_test.rb
new file mode 100644
index 00000000..b9744607
--- /dev/null
+++ b/vendor/plugins/form_spam_protection/test/form_spam_protection_test.rb
@@ -0,0 +1,39 @@
+require File.dirname(__FILE__) + '/test_helper'
+
+class FormSpamProtectionTest < Test::Unit::TestCase
+  def setup
+    @controller = ProtectedController.new
+    @request    = ActionController::TestRequest.new
+    @response   = ActionController::TestResponse.new
+  end
+
+  def test_index_form_is_protected
+    get :index
+    assert_response :success
+    assert_select 'code input[type="hidden"]'
+  end
+  
+  def test_index_form_handler_is_protected
+    post :index
+    assert_response 403
+    assert_equal "You must have Javascript on to submit this form.", @response.body
+
+    get :index
+    form_key_tag = assert_select('code input[type="hidden"]').first
+    submit_with_valid_key = lambda { post :index, :_form_key => form_key_tag.attributes['value'] }
+    
+    submit_with_valid_key.call
+    assert_response :success
+    assert_equal "Submission successful", @response.body
+    
+    3.times(&submit_with_valid_key) # Total of 4 times
+    assert_response 403
+    assert_equal "You cannot resubmit this form again.", @response.body
+  end
+  
+  def test_unprotected_form_is_unprotected
+    get :unprotected
+    assert_response :success
+    assert_select 'input[type="hidden"]', false
+  end
+end
diff --git a/vendor/plugins/form_spam_protection/test/mocks/enkoder.rb b/vendor/plugins/form_spam_protection/test/mocks/enkoder.rb
new file mode 100644
index 00000000..bf10914e
--- /dev/null
+++ b/vendor/plugins/form_spam_protection/test/mocks/enkoder.rb
@@ -0,0 +1,14 @@
+require File.join(File.dirname(__FILE__), '../../vendor/enkoder/lib/enkoder')
+
+module ActionView
+  module Helpers
+    module TextHelper
+
+      # Don't really enkode, because our tests can't eval Javascript
+      def enkode( html, max_length=nil )
+        "<code>#{html}</code>"
+      end
+      
+    end
+  end
+end
\ No newline at end of file
diff --git a/vendor/plugins/form_spam_protection/test/test_helper.rb b/vendor/plugins/form_spam_protection/test/test_helper.rb
new file mode 100644
index 00000000..55f92d4c
--- /dev/null
+++ b/vendor/plugins/form_spam_protection/test/test_helper.rb
@@ -0,0 +1,30 @@
+RAILS_ENV = 'test'
+require File.expand_path(File.join(File.dirname(__FILE__), '../../../../config/environment.rb'))
+require 'action_controller/test_process'
+require 'breakpoint'
+
+class ProtectedController < ActionController::Base
+  protect_forms_from_spam :only => :index
+  def index
+    if request.get?
+      render :inline => form
+    else
+      render :text => 'Submission successful'
+    end
+  end
+  
+  def unprotected
+    render :inline => form
+  end
+  
+  private
+  def form
+    <<-EOD
+    <% form_tag do %>
+    	MyField: <%= text_field_tag 'testme' %>
+    	<%= submit_tag %>
+    <% end %>
+    EOD
+  end
+
+end
diff --git a/vendor/plugins/form_spam_protection/uninstall.rb b/vendor/plugins/form_spam_protection/uninstall.rb
new file mode 100644
index 00000000..97383334
--- /dev/null
+++ b/vendor/plugins/form_spam_protection/uninstall.rb
@@ -0,0 +1 @@
+# Uninstall hook code here
diff --git a/vendor/plugins/form_spam_protection/vendor/enkoder/LICENSE b/vendor/plugins/form_spam_protection/vendor/enkoder/LICENSE
new file mode 100644
index 00000000..8084b8af
--- /dev/null
+++ b/vendor/plugins/form_spam_protection/vendor/enkoder/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2006, Automatic Corp.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+	1. Redistributions of source code must retain the above copyright notice,
+	this list of conditions and the following disclaimer.
+
+	2. Redistributions in binary form must reproduce the above copyright notice,
+	this list of conditions and the following disclaimer in the documentation
+	and/or other materials provided with the distribution.
+
+	3. Neither the name of AUTOMATIC CORP. nor the names of its contributors may
+	be used to endorse or promote products derived from this software without
+	specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
\ No newline at end of file
diff --git a/vendor/plugins/form_spam_protection/vendor/enkoder/README b/vendor/plugins/form_spam_protection/vendor/enkoder/README
new file mode 100644
index 00000000..6f006f1e
--- /dev/null
+++ b/vendor/plugins/form_spam_protection/vendor/enkoder/README
@@ -0,0 +1,82 @@
+==Hivelogic Enkoder
+
+The Enkoder plugin provides an extension to TextHelper that can be used to
+protect email addresses (or other information) by obfuscating them using
+JavaScript code. The only way to decrypt the JavaScript is to actually run it,
+hiding the results from email-harvesting robots while revealing them to real
+people.
+
+It uses a significantly different (and some might say more secure) algorithm
+than the built-in mail_to helper.
+
+Note: There's no guarantee here -- the only way to be completely safe is to not
+publish your address at all.
+
+
+==Installation:
+
+Just drop the "enkoder" folder into the /vendor/plugins folder in your project.
+
+
+==Usage:
+
+There are two methods:
+
+	enkode( html )
+	
+This method accepts a block of html (or any text) and returns an enkoded JavaScript.
+
+The second method is:
+
+	enkode_mail( email, link_text, title_text=nil, subject=nil )
+
+This method takes an email address, the text to show to the viewer, optional
+title text (what's seen when somebody hovers over the link), and optional
+subject for the email, and returns an enkoded email address link.
+
+
+==Examples:
+
+To enkode a single email address, one could just do:
+
+	<%= enkode_mail('user@domain.com','click here') %>
+
+And the following link would be returned (enkoded as JavaScript):
+
+	<a href="mailto:"user@domain.com" title="">click here</a>
+
+Adding a title and subject text would require the second two optional fields:
+
+	<%= enkode_mail('user@domain.com','click here', 'email me', 'enkoder') %>
+
+And we'd get back (enkoded as JavaScript):
+
+	<a href="mailto:"user@domain.com?subject=enkoder" title="email me">click here</a>
+
+Of course we can also enkode many email addresses on the fly:
+
+	<% @users.each do |user| %>
+		<p><%= enkode_mail(@user.email,@user.name) %></p>
+	<% end %>
+
+To enkode a snippet of XHTML, we can do:
+
+	<%= enkode("<p>This block will be hidden from spambots.</p>") %>
+
+We could protect a link or block of XHTML from being indexed like this:
+
+	<%= enkode('Try and find <a href="secret.html">this</a>, google!') %>
+
+We could have anything we wanted in that block, XHTML, links, email addresses, etc.
+
+For more examples and to see the full functionality of the Enkoder, have a look
+its permanent page on the web:
+
+	http://hivelogic.com/enkoder
+
+
+==License:
+
+Copyright (c) 2006 Automatic Corp.
+
+This plugin is released under the LGPL license.  See LICENSE file for details.
diff --git a/vendor/plugins/form_spam_protection/vendor/enkoder/init.rb b/vendor/plugins/form_spam_protection/vendor/enkoder/init.rb
new file mode 100644
index 00000000..b34c1fd6
--- /dev/null
+++ b/vendor/plugins/form_spam_protection/vendor/enkoder/init.rb
@@ -0,0 +1 @@
+require 'enkoder'
diff --git a/vendor/plugins/form_spam_protection/vendor/enkoder/lib/enkoder.rb b/vendor/plugins/form_spam_protection/vendor/enkoder/lib/enkoder.rb
new file mode 100644
index 00000000..3e0a6934
--- /dev/null
+++ b/vendor/plugins/form_spam_protection/vendor/enkoder/lib/enkoder.rb
@@ -0,0 +1,144 @@
+# Copyright (c) 2006, Automatic Corp.
+# All rights reserved.
+# 
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+# 
+# 	1. Redistributions of source code must retain the above copyright notice,
+# 	this list of conditions and the following disclaimer.
+# 
+# 	2. Redistributions in binary form must reproduce the above copyright notice,
+# 	this list of conditions and the following disclaimer in the documentation
+# 	and/or other materials provided with the distribution.
+# 
+# 	3. Neither the name of AUTOMATIC CORP. nor the names of its contributors
+#   may be used to endorse or promote products derived from this software
+#   without specific prior written permission.
+# 
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+
+module ActionView
+  module Helpers
+    module TextHelper
+
+      def enkode( html, max_length=1024 )
+
+        rnd = 10 + (rand*90).to_i
+
+        kodes = [
+          {
+            'rb' => lambda do |s|
+              s.reverse
+            end,
+            'js' => ";kode=kode.split('').reverse().join('')"
+          },
+          {
+            'rb' => lambda do |s|
+              result = ''
+              s.each_byte { |b|
+                b += 3
+                b-=128 if b>127
+                result += b.chr
+              }
+              result
+            end,
+            'js' => (
+               ";x='';for(i=0;i<kode.length;i++){c=kode.charCodeAt(i)-3;" +
+               "if(c<0)c+=128;x+=String.fromCharCode(c)}kode=x"
+             )
+          },
+          {
+            'rb' => lambda do |s|
+              for i in (0..s.length/2-1)
+                s[i*2],s[i*2+1] = s[i*2+1],s[i*2]
+              end
+              s
+            end,
+            'js' => (
+               ";x='';for(i=0;i<(kode.length-1);i+=2){" +
+               "x+=kode.charAt(i+1)+kode.charAt(i)}" +
+               "kode=x+(i<kode.length?kode.charAt(kode.length-1):'');"
+             )
+          }
+        ]
+
+        kode = "document.write("+ js_dbl_quote(html) +");"
+
+        max_length = kode.length+1 unless max_length>kode.length
+
+        result = ''
+
+        while kode.length < max_length
+          idx = (rand*kodes.length).to_i
+          kode = kodes[idx]['rb'].call(kode)
+          kode = "kode=" + js_dbl_quote(kode) + kodes[idx]['js']
+          js = "var kode=\n"+js_wrap_quote(js_dbl_quote(kode),79)
+          js = js+"\n;var i,c,x;while(eval(kode));"
+          js = "function hivelogic_enkoder(){"+js+"}hivelogic_enkoder();"
+          js = '<script type="text/javascript">'+"\n/* <![CDATA[ */\n"+js
+          js = js+"\n/* ]]> */\n</script>\n"
+          result = js unless result.length>max_length
+        end
+
+        result
+
+      end
+      
+      def enkode_mail( email, link_text, title_text=nil, subject=nil )
+        str = String.new
+        str << '<a href="mailto:' + email
+        str << '?subject=' + subject unless subject.nil?
+        str << '" title="'
+        str << title_text unless title_text.nil?
+        str << '">' + link_text + '</a>'
+        enkode(str)
+      end
+
+      private
+
+        def js_dbl_quote( str )
+          str.inspect
+        end
+
+        def js_wrap_quote( str, max_line_length )
+          max_line_length -= 3
+          inQ = false
+          esc = 0
+          lineLen = 0
+          result = ''
+          chunk = ''
+          while str.length > 0
+            if str =~ /^\\[0-7]{3}/
+              chunk = str[0..3]
+              str[0..3] = ''
+            elsif str =~ /^\\./
+              chunk = str[0..1]
+              str[0..1] = ''
+            else
+              chunk = str[0..0]
+              str[0..0] = ''
+            end
+            if lineLen+chunk.length >= max_line_length
+              result += '"+'+"\n"+'"'
+              lineLen = 1
+            end
+            lineLen += chunk.length
+            result += chunk;
+          end
+          result
+        end
+
+    end
+  end
+end