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Posted to dev@tapestry.apache.org by jk...@apache.org on 2007/06/03 20:51:11 UTC

svn commit: r543957 [3/5] - in /tapestry/tapestry4/trunk: ./ src/site/ src/site/resources/images/ComponentReference/ src/site/xdoc/components/dojo/ src/site/xdoc/components/general/ src/site/xdoc/components/link/ src/site/xdoc/components/scriptaculous/...

Added: tapestry/tapestry4/trunk/tapestry-framework/src/js/scriptaculous-1.7.1/dragdrop.js
URL: http://svn.apache.org/viewvc/tapestry/tapestry4/trunk/tapestry-framework/src/js/scriptaculous-1.7.1/dragdrop.js?view=auto&rev=543957
==============================================================================
--- tapestry/tapestry4/trunk/tapestry-framework/src/js/scriptaculous-1.7.1/dragdrop.js (added)
+++ tapestry/tapestry4/trunk/tapestry-framework/src/js/scriptaculous-1.7.1/dragdrop.js Sun Jun  3 11:51:08 2007
@@ -0,0 +1,970 @@
+// script.aculo.us dragdrop.js v1.7.1_beta3, Fri May 25 17:19:41 +0200 2007
+
+// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+//           (c) 2005-2007 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz)
+// 
+// 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) });
+  },
+
+  add: function(element) {
+    element = $(element);
+    var options = Object.extend({
+      greedy:     true,
+      hoverclass: null,
+      tree:       false
+    }, arguments[1] || {});
+
+    // cache containers
+    if(options.containment) {
+      options._containers = [];
+      var containment = options.containment;
+      if((typeof containment == 'object') && 
+        (containment.constructor == Array)) {
+        containment.each( function(c) { options._containers.push($(c)) });
+      } else {
+        options._containers.push($(containment));
+      }
+    }
+    
+    if(options.accept) options.accept = [options.accept].flatten();
+
+    Element.makePositioned(element); // fix IE
+    options.element = element;
+
+    this.drops.push(options);
+  },
+  
+  findDeepestChild: function(drops) {
+    deepest = drops[0];
+      
+    for (i = 1; i < drops.length; ++i)
+      if (Element.isParent(drops[i].element, deepest.element))
+        deepest = drops[i];
+    
+    return deepest;
+  },
+
+  isContained: function(element, drop) {
+    var 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.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.removeClassName(drop.element, drop.hoverclass);
+    this.last_active = null;
+  },
+
+  activate: function(drop) {
+    if(drop.hoverclass)
+      Element.addClassName(drop.element, drop.hoverclass);
+    this.last_active = drop;
+  },
+
+  show: function(point, element) {
+    if(!this.drops.length) return;
+    var affected = [];
+    
+    if(this.last_active) this.deactivate(this.last_active);
+    this.drops.each( function(drop) {
+      if(Droppables.isAffected(point, element, drop))
+        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.last_active.onDrop) {
+        this.last_active.onDrop(element, this.last_active.element, event); 
+        return true; 
+      }
+  },
+
+  reset: function() {
+    if(this.last_active)
+      this.deactivate(this.last_active);
+  }
+}
+
+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._cacheObserverCallbacks();
+  },
+  
+  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, 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 defaults = {
+      handle: false,
+      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.Move(element, { x: -left_offset, y: -top_offset, duration: dur,
+          queue: {scope:'_draggable', position:'end'}
+        });
+      },
+      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,
+      quiet: 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);
+    
+    if(options.handle && (typeof options.handle == 'string'))
+      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.delta    = this.currentDelta();
+    this.options  = options;
+    this.dragging = false;   
+
+    this.eventMouseDown = this.initDrag.bindAsEventListener(this);
+    Event.observe(this.handle, "mousedown", this.eventMouseDown);
+    
+    Draggables.register(this);
+  },
+  
+  destroy: function() {
+    Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);
+    Draggables.unregister(this);
+  },
+  
+  currentDelta: function() {
+    return([
+      parseInt(Element.getStyle(this.element,'left') || '0'),
+      parseInt(Element.getStyle(this.element,'top') || '0')]);
+  },
+  
+  initDrag: function(event) {
+    if(typeof Draggable._dragging[this.element] != 'undefined' &&
+      Draggable._dragging[this.element]) return;
+    if(Event.isLeftClick(event)) {    
+      // abort on form elements, fixes a Firefox issue
+      var src = Event.element(event);
+      if((tag_name = src.tagName.toUpperCase()) && (
+        tag_name=='INPUT' ||
+        tag_name=='SELECT' ||
+        tag_name=='OPTION' ||
+        tag_name=='BUTTON' ||
+        tag_name=='TEXTAREA')) return;
+        
+      var pointer = [Event.pointerX(event), Event.pointerY(event)];
+      var pos     = Position.cumulativeOffset(this.element);
+      this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) });
+      
+      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);
+    
+    if(!this.options.quiet){
+      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(Prototype.Browser.WebKit) window.scrollBy(0,0);
+    
+    Event.stop(event);
+  },
+  
+  finishDrag: function(event, success) {
+    this.dragging = false;
+    
+    if(this.options.quiet){
+      Position.prepare();
+      var pointer = [Event.pointerX(event), Event.pointerY(event)];
+      Droppables.show(pointer, this.element);
+    }
+
+    if(this.options.ghosting) {
+      Position.relativize(this.element);
+      Element.remove(this._clone);
+      this._clone = null;
+    }
+
+    var dropped = false; 
+    if(success) { 
+      dropped = Droppables.fire(event, this.element); 
+      if (!dropped) dropped = false; 
+    }
+    if(dropped && this.options.onDropped) this.options.onDropped(this.element);
+    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) {
+      if (dropped == 0 || revert != 'failure')
+        this.options.reverteffect(this.element,
+          d[1]-this.delta[1], d[0]-this.delta[0]);
+    } else {
+      this.delta = d;
+    }
+
+    if(this.options.zindex)
+      this.element.style.zIndex = this.originalZ;
+
+    if(this.options.endeffect) 
+      this.options.endeffect(this.element);
+      
+    Draggables.deactivate(this);
+    Droppables.reset();
+  },
+  
+  keyPress: function(event) {
+    if(event.keyCode!=Event.KEY_ESC) return;
+    this.finishDrag(event, false);
+    Event.stop(event);
+  },
+  
+  endDrag: function(event) {
+    if(!this.dragging) return;
+    this.stopScrolling();
+    this.finishDrag(event, true);
+    Event.stop(event);
+  },
+  
+  draw: function(point) {
+    var pos = Position.cumulativeOffset(this.element);
+    if(this.options.ghosting) {
+      var r   = Position.realOffset(this.element);
+      pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY;
+    }
+    
+    var d = this.currentDelta();
+    pos[0] -= d[0]; pos[1] -= d[1];
+    
+    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 = p[0] + "px";
+    if((!this.options.constraint) || (this.options.constraint=='vertical'))
+      style.top  = p[1] + "px";
+    
+    if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering
+  },
+  
+  stopScrolling: function() {
+    if(this.scrollInterval) {
+      clearInterval(this.scrollInterval);
+      this.scrollInterval = null;
+      Draggables._lastScrollPointer = null;
+    }
+  },
+  
+  startScrolling: function(speed) {
+    if(!(speed[0] || speed[1])) return;
+    this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed];
+    this.lastScrolled = new Date();
+    this.scrollInterval = setInterval(this.scroll.bind(this), 10);
+  },
+  
+  scroll: function() {
+    var current = new Date();
+    var delta = current - this.lastScrolled;
+    this.lastScrolled = current;
+    if(this.options.scroll == window) {
+      with (this._getWindowScroll(this.options.scroll)) {
+        if (this.scrollSpeed[0] || this.scrollSpeed[1]) {
+          var d = delta / 1000;
+          this.options.scroll.scrollTo( left + d*this.scrollSpeed[0], top + d*this.scrollSpeed[1] );
+        }
+      }
+    } else {
+      this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000;
+      this.options.scroll.scrollTop  += this.scrollSpeed[1] * delta / 1000;
+    }
+    
+    Position.prepare();
+    Droppables.show(Draggables._lastPointer, this.element);
+    Draggables.notify('onDrag', this);
+    if (this._isScrollChild) {
+      Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer);
+      Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000;
+      Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000;
+      if (Draggables._lastScrollPointer[0] < 0)
+        Draggables._lastScrollPointer[0] = 0;
+      if (Draggables._lastScrollPointer[1] < 0)
+        Draggables._lastScrollPointer[1] = 0;
+      this.draw(Draggables._lastScrollPointer);
+    }
+    
+    if(this.options.change) this.options.change(this);
+  },
+  
+  _getWindowScroll: function(w) {
+    var T, L, W, H;
+    with (w.document) {
+      if (w.document.documentElement && documentElement.scrollTop) {
+        T = documentElement.scrollTop;
+        L = documentElement.scrollLeft;
+      } else if (w.document.body) {
+        T = body.scrollTop;
+        L = body.scrollLeft;
+      }
+      if (w.innerWidth) {
+        W = w.innerWidth;
+        H = w.innerHeight;
+      } else if (w.document.documentElement && documentElement.clientWidth) {
+        W = documentElement.clientWidth;
+        H = documentElement.clientHeight;
+      } else {
+        W = body.offsetWidth;
+        H = body.offsetHeight
+      }
+    }
+    return { top: T, left: L, width: W, height: H };
+  }
+}
+
+/*--------------------------------------------------------------------------*/
+
+var SortableObserver = Class.create();
+SortableObserver.prototype = {
+  initialize: function(element, observer) {
+    this.element   = $(element);
+    this.observer  = observer;
+    this.lastValue = Sortable.serialize(this.element);
+  },
+  
+  onStart: function() {
+    this.lastValue = Sortable.serialize(this.element);
+  },
+  
+  onEnd: function() {
+    Sortable.unmark();
+    if(this.lastValue != Sortable.serialize(this.element))
+      this.observer(this.element)
+  }
+}
+
+var Sortable = {
+  SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/,
+  
+  sortables: {},
+  
+  _findRootElement: function(element) {
+    while (element.tagName.toUpperCase() != "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){
+    var s = Sortable.options(element);
+    
+    if(s) {
+      Draggables.removeObserver(s.element);
+      s.droppables.each(function(d){ Droppables.remove(d) });
+      s.draggables.invoke('destroy');
+      
+      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,
+      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,
+      quiet:       false, 
+      scroll:      false,
+      scrollSensitivity: 20,
+      scrollSpeed: 15,
+      format:      this.SERIALIZE_RULE,
+      
+      // these take arrays of elements or ids and can be 
+      // used for better initialization performance
+      elements:    false,
+      handles:     false,
+      
+      onChange:    Prototype.emptyFunction,
+      onUpdate:    Prototype.emptyFunction
+    }, arguments[1] || {});
+
+    // clear any old sortable with same element
+    this.destroy(element);
+
+    // build options for the draggables
+    var options_for_draggable = {
+      revert:      true,
+      quiet:       options.quiet,
+      scroll:      options.scroll,
+      scrollSpeed: options.scrollSpeed,
+      scrollSensitivity: options.scrollSensitivity,
+      delay:       options.delay,
+      ghosting:    options.ghosting,
+      constraint:  options.constraint,
+      handle:      options.handle };
+
+    if(options.starteffect)
+      options_for_draggable.starteffect = options.starteffect;
+
+    if(options.reverteffect)
+      options_for_draggable.reverteffect = options.reverteffect;
+    else
+      if(options.ghosting) options_for_draggable.reverteffect = function(element) {
+        element.style.top  = 0;
+        element.style.left = 0;
+      };
+
+    if(options.endeffect)
+      options_for_draggable.endeffect = options.endeffect;
+
+    if(options.zindex)
+      options_for_draggable.zindex = options.zindex;
+
+    // build options for the droppables  
+    var options_for_droppable = {
+      overlap:     options.overlap,
+      containment: options.containment,
+      tree:        options.tree,
+      hoverclass:  options.hoverclass,
+      onHover:     Sortable.onHover
+    }
+    
+    var options_for_tree = {
+      onHover:      Sortable.onEmptyHover,
+      overlap:      options.overlap,
+      containment:  options.containment,
+      hoverclass:   options.hoverclass
+    }
+
+    // fix for gecko engine
+    Element.cleanWhitespace(element); 
+
+    options.draggables = [];
+    options.droppables = [];
+
+    // drop on empty handling
+    if(options.dropOnEmpty || options.tree) {
+      Droppables.add(element, options_for_tree);
+      options.droppables.push(element);
+    }
+
+    (options.elements || this.findElements(element, options) || []).each( function(e,i) {
+      var handle = options.handles ? $(options.handles[i]) :
+        (options.handle ? $(e).getElementsByClassName(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[element.id] = options;
+
+    // for onupdate
+    Draggables.addObserver(new SortableObserver(element, options.onUpdate));
+
+  },
+
+  // return all suitable-for-sortable elements in a guaranteed order
+  findElements: function(element, options) {
+    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(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;
+        element.style.visibility = "hidden"; // fix gecko rendering
+        dropon.parentNode.insertBefore(element, dropon);
+        if(dropon.parentNode!=oldParentNode) 
+          Sortable.options(oldParentNode).onChange(element);
+        Sortable.options(dropon.parentNode).onChange(element);
+      }
+    } else {
+      Sortable.mark(dropon, 'after');
+      var nextElement = dropon.nextSibling || null;
+      if(nextElement != element) {
+        var oldParentNode = element.parentNode;
+        element.style.visibility = "hidden"; // fix gecko rendering
+        dropon.parentNode.insertBefore(element, nextElement);
+        if(dropon.parentNode!=oldParentNode) 
+          Sortable.options(oldParentNode).onChange(element);
+        Sortable.options(dropon.parentNode).onChange(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) Sortable._marker.hide();
+  },
+
+  mark: function(dropon, position) {
+    // mark on ghosting only
+    var sortable = Sortable.options(dropon.parentNode);
+    if(sortable && !sortable.ghosting) return; 
+
+    if(!Sortable._marker) {
+      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.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; 
+  },
+
+  tree: function(element) {
+    element = $(element);
+    var sortableOptions = this.options(element);
+    var options = Object.extend({
+      tag: sortableOptions.tag,
+      treeTag: sortableOptions.treeTag,
+      only: sortableOptions.only,
+      name: element.id,
+      format: sortableOptions.format
+    }, arguments[1] || {});
+    
+    var root = {
+      id: null,
+      parent: null,
+      children: [],
+      container: element,
+      position: 0
+    }
+    
+    return Sortable._tree(element, options, root);
+  },
+
+  /* Construct a [i] index for a particular node */
+  _constructIndex: function(node) {
+    var index = '';
+    do {
+      if (node.id) index = '[' + node.position + ']' + index;
+    } while ((node = node.parent) != null);
+    return index;
+  },
+
+  sequence: function(element) {
+    element = $(element);
+    var options = Object.extend(this.options(element), arguments[1] || {});
+    
+    return $(this.findElements(element, options) || []).map( function(item) {
+      return 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('&');
+    }
+  }
+}
+
+// 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')];
+}

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Added: tapestry/tapestry4/trunk/tapestry-framework/src/js/scriptaculous-1.7.1/effects.js
URL: http://svn.apache.org/viewvc/tapestry/tapestry4/trunk/tapestry-framework/src/js/scriptaculous-1.7.1/effects.js?view=auto&rev=543957
==============================================================================
--- tapestry/tapestry4/trunk/tapestry-framework/src/js/scriptaculous-1.7.1/effects.js (added)
+++ tapestry/tapestry4/trunk/tapestry-framework/src/js/scriptaculous-1.7.1/effects.js Sun Jun  3 11:51:08 2007
@@ -0,0 +1,1094 @@
+// script.aculo.us effects.js v1.7.1_beta3, Fri May 25 17:19:41 +0200 2007
+
+// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+// Contributors:
+//  Justin Palmer (http://encytemedia.com/)
+//  Mark Pilgrim (http://diveintomark.org/)
+//  Martin Bialasinki
+// 
+// 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/ 
+
+// 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));  
+}
+
+/*--------------------------------------------------------------------------*/
+
+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.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.setStyle({fontSize: (percent/100) + 'em'});   
+  if(Prototype.Browser.WebKit) window.scrollBy(0,0);
+  return element;
+}
+
+Element.getInlineOpacity = function(element){
+  return $(element).style.opacity || '';
+}
+
+Element.forceRerendering = function(element) {
+  try {
+    element = $(element);
+    var n = document.createTextNode(' ');
+    element.appendChild(n);
+    element.removeChild(n);
+  } catch(e) { }
+};
+
+/*--------------------------------------------------------------------------*/
+
+Array.prototype.call = function() {
+  var args = arguments;
+  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) {
+    if(typeof Builder == 'undefined')
+      throw("Effect.tagifyText requires including script.aculo.us' builder.js library");
+      
+    var tagifyStyle = 'position:relative';
+    if(Prototype.Browser.IE) 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), 
+              child);
+        });
+        Element.remove(child);
+      }
+    });
+  },
+  multiple: function(element, effect) {
+    var elements;
+    if(((typeof element == 'object') || 
+        (typeof element == 'function')) && 
+       (element.length))
+      elements = element;
+    else
+      elements = $(element).childNodes;
+      
+    var options = Object.extend({
+      speed: 0.1,
+      delay: 0.0
+    }, arguments[2] || {});
+    var masterDelay = options.delay;
+
+    $A(elements).each( function(element, index) {
+      new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
+    });
+  },
+  PAIRS: {
+    'slide':  ['SlideDown','SlideUp'],
+    'blind':  ['BlindDown','BlindUp'],
+    'appear': ['Appear','Fade']
+  },
+  toggle: function(element, effect) {
+    element = $(element);
+    effect = (effect || 'appear').toLowerCase();
+    var options = Object.extend({
+      queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
+    }, arguments[2] || {});
+    Effect[element.visible() ? 
+      Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
+  }
+};
+
+var Effect2 = Effect; // deprecated
+
+/* ------------- transitions ------------- */
+
+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) {
+    var pos = ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;
+    return (pos > 1 ? 1 : pos);
+  },
+  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.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();
+    
+    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) {
+            e.startOn  += effect.finishOn;
+            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;
+        break;
+    }
+    
+    effect.startOn  += timestamp;
+    effect.finishOn += timestamp;
+
+    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), 15);
+  },
+  remove: function(effect) {
+    this.effects = this.effects.reject(function(e) { return e==effect });
+    if(this.effects.length == 0) {
+      clearInterval(this.interval);
+      this.interval = null;
+    }
+  },
+  loop: function() {
+    var timePos = new Date().getTime();
+    for(var i=0, len=this.effects.length;i<len;i++) 
+      this.effects[i] && this.effects[i].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:        100,   // 100= assume 66fps max.
+  sync:       false, // true for combining
+  from:       0.0,
+  to:         1.0,
+  delay:      0.0,
+  queue:      'parallel'
+}
+
+Effect.Base = function() {};
+Effect.Base.prototype = {
+  position: null,
+  start: function(options) {
+    function codeForEvent(options,eventName){
+      return (
+        (options[eventName+'Internal'] ? 'this.options.'+eventName+'Internal(this);' : '') +
+        (options[eventName] ? 'this.options.'+eventName+'(this);' : '')
+      );
+    }
+    if(options.transition === false) options.transition = Effect.Transitions.linear;
+    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.fromToDelta  = this.options.to-this.options.from;
+    this.totalTime    = this.finishOn-this.startOn;
+    this.totalFrames  = this.options.fps*this.options.duration;
+    
+    eval('this.render = function(pos){ '+
+      'if(this.state=="idle"){this.state="running";'+
+      codeForEvent(options,'beforeSetup')+
+      (this.setup ? 'this.setup();':'')+ 
+      codeForEvent(options,'afterSetup')+
+      '};if(this.state=="running"){'+
+      'pos=this.options.transition(pos)*'+this.fromToDelta+'+'+this.options.from+';'+
+      'this.position=pos;'+
+      codeForEvent(options,'beforeUpdate')+
+      (this.update ? 'this.update(pos);':'')+
+      codeForEvent(options,'afterUpdate')+
+      '}}');
+    
+    this.event('beforeStart');
+    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) {
+      if(timePos >= this.finishOn) {
+        this.render(1.0);
+        this.cancel();
+        this.event('beforeFinish');
+        if(this.finish) this.finish(); 
+        this.event('afterFinish');
+        return;  
+      }
+      var pos   = (timePos - this.startOn) / this.totalTime,
+          frame = Math.round(pos * this.totalFrames);
+      if(frame > this.currentFrame) {
+        this.render(pos);
+        this.currentFrame = frame;
+      }
+    }
+  },
+  cancel: function() {
+    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() {
+    var data = $H();
+    for(property in this)
+      if(typeof this[property] != 'function') data[property] = this[property];
+    return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
+  }
+}
+
+Effect.Parallel = Class.create();
+Object.extend(Object.extend(Effect.Parallel.prototype, Effect.Base.prototype), {
+  initialize: function(effects) {
+    this.effects = effects || [];
+    this.start(arguments[1]);
+  },
+  update: function(position) {
+    this.effects.invoke('render', position);
+  },
+  finish: function(position) {
+    this.effects.each( function(effect) {
+      effect.render(1.0);
+      effect.cancel();
+      effect.event('beforeFinish');
+      if(effect.finish) effect.finish(position);
+      effect.event('afterFinish');
+    });
+  }
+});
+
+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(Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
+      this.element.setStyle({zoom: 1});
+    var options = Object.extend({
+      from: this.element.getOpacity() || 0.0,
+      to:   1.0
+    }, arguments[1] || {});
+    this.start(options);
+  },
+  update: function(position) {
+    this.element.setOpacity(position);
+  }
+});
+
+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) 
+    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) {
+    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);
+    if(!this.element) throw(Effect._elementDoesNotExistError);
+    var options = Object.extend({
+      scaleX: true,
+      scaleY: true,
+      scaleContent: true,
+      scaleFromCenter: false,
+      scaleMode: 'box',        // 'box' or 'contents' or {} with provided values
+      scaleFrom: 100.0,
+      scaleTo:   percent
+    }, arguments[2] || {});
+    this.start(options);
+  },
+  setup: function() {
+    this.restoreAfterFinish = this.options.restoreAfterFinish || false;
+    this.elementPositioning = this.element.getStyle('position');
+    
+    this.originalStyle = {};
+    ['top','left','width','height','fontSize'].each( function(k) {
+      this.originalStyle[k] = this.element.style[k];
+    }.bind(this));
+      
+    this.originalTop  = this.element.offsetTop;
+    this.originalLeft = this.element.offsetLeft;
+    
+    var fontSize = this.element.getStyle('font-size') || '100%';
+    ['em','px','%','pt'].each( function(fontSizeType) {
+      if(fontSize.indexOf(fontSizeType)>0) {
+        this.fontSize     = parseFloat(fontSize);
+        this.fontSizeType = fontSizeType;
+      }
+    }.bind(this));
+    
+    this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;
+    
+    this.dims = null;
+    if(this.options.scaleMode=='box')
+      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,
+                   this.options.scaleMode.originalWidth];
+  },
+  update: function(position) {
+    var currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
+    if(this.options.scaleContent && this.fontSize)
+      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) this.element.setStyle(this.originalStyle);
+  },
+  setDimensions: function(height, width) {
+    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) d.top = this.originalTop-topd + 'px';
+        if(this.options.scaleX) d.left = this.originalLeft-leftd + 'px';
+      } else {
+        if(this.options.scaleY) d.top = -topd + 'px';
+        if(this.options.scaleX) d.left = -leftd + 'px';
+      }
+    }
+    this.element.setStyle(d);
+  }
+});
+
+Effect.Highlight = Class.create();
+Object.extend(Object.extend(Effect.Highlight.prototype, Effect.Base.prototype), {
+  initialize: function(element) {
+    this.element = $(element);
+    if(!this.element) throw(Effect._elementDoesNotExistError);
+    var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || {});
+    this.start(options);
+  },
+  setup: function() {
+    // Prevent executing on elements not in the layout flow
+    if(this.element.getStyle('display')=='none') { this.cancel(); return; }
+    // Disable background image during the effect
+    this.oldStyle = {};
+    if (!this.options.keepBackgroundImage) {
+      this.oldStyle.backgroundImage = this.element.getStyle('background-image');
+      this.element.setStyle({backgroundImage: 'none'});
+    }
+    if(!this.options.endcolor)
+      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._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) {
+    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.setStyle(Object.extend(this.oldStyle, {
+      backgroundColor: this.options.restorecolor
+    }));
+  }
+});
+
+Effect.ScrollTo = Class.create();
+Object.extend(Object.extend(Effect.ScrollTo.prototype, Effect.Base.prototype), {
+  initialize: function(element) {
+    this.element = $(element);
+    this.start(arguments[1] || {});
+  },
+  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 - 
+        (document.documentElement.clientHeight ? 
+          document.documentElement.clientHeight : document.body.clientHeight);
+    this.scrollStart = Position.deltaY;
+    this.delta = (offsets[1] > max ? max : offsets[1]) - this.scrollStart;
+  },
+  update: function(position) {
+    Position.prepare();
+    window.scrollTo(Position.deltaX, 
+      this.scrollStart + (position*this.delta));
+  }
+});
+
+/* ------------- combination effects ------------- */
+
+Effect.Fade = function(element) {
+  element = $(element);
+  var oldOpacity = element.getInlineOpacity();
+  var options = Object.extend({
+  from: element.getOpacity() || 1.0,
+  to:   0.0,
+  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('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
+  to:   1.0,
+  // force Safari to render floated elements properly
+  afterFinishInternal: function(effect) {
+    effect.element.forceRerendering();
+  },
+  beforeSetup: function(effect) {
+    effect.element.setOpacity(effect.options.from).show(); 
+  }}, arguments[1] || {});
+  return new Effect.Opacity(element,options);
+}
+
+Effect.Puff = function(element) {
+  element = $(element);
+  var oldStyle = { 
+    opacity: element.getInlineOpacity(), 
+    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) {
+        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();
+  return new Effect.Scale(element, 0,
+    Object.extend({ scaleContent: false, 
+      scaleX: false, 
+      restoreAfterFinish: true,
+      afterFinishInternal: function(effect) {
+        effect.element.hide().undoClipping();
+      } 
+    }, arguments[1] || {})
+  );
+}
+
+Effect.BlindDown = function(element) {
+  element = $(element);
+  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();
+  return new Effect.Appear(element, Object.extend({
+    duration: 0.4,
+    from: 0,
+    transition: Effect.Transitions.flicker,
+    afterFinishInternal: function(effect) {
+      new Effect.Scale(effect.element, 1, { 
+        duration: 0.3, scaleFromCenter: true,
+        scaleX: false, scaleContent: false, restoreAfterFinish: true,
+        beforeSetup: function(effect) { 
+          effect.element.makePositioned().makeClipping();
+        },
+        afterFinishInternal: function(effect) {
+          effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
+        }
+      })
+    }
+  }, arguments[1] || {}));
+}
+
+Effect.DropOut = function(element) {
+  element = $(element);
+  var oldStyle = {
+    top: element.getStyle('top'),
+    left: element.getStyle('left'),
+    opacity: element.getInlineOpacity() };
+  return new Effect.Parallel(
+    [ 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) {
+          effect.effects[0].element.makePositioned(); 
+        },
+        afterFinishInternal: function(effect) {
+          effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
+        } 
+      }, arguments[1] || {}));
+}
+
+Effect.Shake = function(element) {
+  element = $(element);
+  var oldStyle = {
+    top: element.getStyle('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).cleanWhitespace();
+  // SlideDown need to have the content of the element wrapped in a container element with fixed height!
+  var oldInnerBottom = element.down().getStyle('bottom');
+  var elementDimensions = element.getDimensions();
+  return new Effect.Scale(element, 100, Object.extend({ 
+    scaleContent: false, 
+    scaleX: false, 
+    scaleFrom: window.opera ? 0 : 1,
+    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
+    restoreAfterFinish: true,
+    afterSetup: function(effect) {
+      effect.element.makePositioned();
+      effect.element.down().makePositioned();
+      if(window.opera) effect.element.setStyle({top: ''});
+      effect.element.makeClipping().setStyle({height: '0px'}).show(); 
+    },
+    afterUpdateInternal: function(effect) {
+      effect.element.down().setStyle({bottom:
+        (effect.dims[0] - effect.element.clientHeight) + 'px' }); 
+    },
+    afterFinishInternal: function(effect) {
+      effect.element.undoClipping().undoPositioned();
+      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom}); }
+    }, arguments[1] || {})
+  );
+}
+
+Effect.SlideUp = function(element) {
+  element = $(element).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) {
+      effect.element.makePositioned();
+      effect.element.down().makePositioned();
+      if(window.opera) effect.element.setStyle({top: ''});
+      effect.element.makeClipping().show();
+    },  
+    afterUpdateInternal: function(effect) {
+      effect.element.down().setStyle({bottom:
+        (effect.dims[0] - effect.element.clientHeight) + 'px' });
+    },
+    afterFinishInternal: function(effect) {
+      effect.element.hide().undoClipping().undoPositioned().setStyle({bottom: oldInnerBottom});
+      effect.element.down().undoPositioned();
+    }
+   }, arguments[1] || {})
+  );
+}
+
+// Bug in opera makes the TD containing this element expand for a instance after finish 
+Effect.Squish = function(element) {
+  return new Effect.Scale(element, window.opera ? 1 : 0, { 
+    restoreAfterFinish: true,
+    beforeSetup: function(effect) {
+      effect.element.makeClipping(); 
+    },  
+    afterFinishInternal: function(effect) {
+      effect.element.hide().undoClipping(); 
+    }
+  });
+}
+
+Effect.Grow = function(element) {
+  element = $(element);
+  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 (options.direction) {
+    case 'top-left':
+      initialMoveX = initialMoveY = moveX = moveY = 0; 
+      break;
+    case 'top-right':
+      initialMoveX = dims.width;
+      initialMoveY = moveY = 0;
+      moveX = -dims.width;
+      break;
+    case 'bottom-left':
+      initialMoveX = moveX = 0;
+      initialMoveY = dims.height;
+      moveY = -dims.height;
+      break;
+    case 'bottom-right':
+      initialMoveX = dims.width;
+      initialMoveY = dims.height;
+      moveX = -dims.width;
+      moveY = -dims.height;
+      break;
+    case 'center':
+      initialMoveX = dims.width / 2;
+      initialMoveY = dims.height / 2;
+      moveX = -dims.width / 2;
+      moveY = -dims.height / 2;
+      break;
+  }
+  
+  return new Effect.Move(element, {
+    x: initialMoveX,
+    y: initialMoveY,
+    duration: 0.01, 
+    beforeSetup: function(effect) {
+      effect.element.hide().makeClipping().makePositioned();
+    },
+    afterFinishInternal: function(effect) {
+      new Effect.Parallel(
+        [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
+          new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
+          new Effect.Scale(effect.element, 100, {
+            scaleMode: { originalHeight: dims.height, originalWidth: dims.width }, 
+            sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
+        ], Object.extend({
+             beforeSetup: function(effect) {
+               effect.effects[0].element.setStyle({height: '0px'}).show(); 
+             },
+             afterFinishInternal: function(effect) {
+               effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle); 
+             }
+           }, options)
+      )
+    }
+  });
+}
+
+Effect.Shrink = function(element) {
+  element = $(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 dims = element.getDimensions();
+  var moveX, moveY;
+  
+  switch (options.direction) {
+    case 'top-left':
+      moveX = moveY = 0;
+      break;
+    case 'top-right':
+      moveX = dims.width;
+      moveY = 0;
+      break;
+    case 'bottom-left':
+      moveX = 0;
+      moveY = dims.height;
+      break;
+    case 'bottom-right':
+      moveX = dims.width;
+      moveY = dims.height;
+      break;
+    case 'center':  
+      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: 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) {
+           effect.effects[0].element.makePositioned().makeClipping(); 
+         },
+         afterFinishInternal: function(effect) {
+           effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
+       }, options)
+  );
+}
+
+Effect.Pulsate = function(element) {
+  element = $(element);
+  var options    = arguments[1] || {};
+  var oldOpacity = element.getInlineOpacity();
+  var transition = options.transition || Effect.Transitions.sinoidal;
+  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: 2.0, from: 0,
+      afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
+    }, options), {transition: reverser}));
+}
+
+Effect.Fold = function(element) {
+  element = $(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,
+    afterFinishInternal: function(effect) {
+    new Effect.Scale(element, 1, { 
+      scaleContent: false, 
+      scaleY: false,
+      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] || {});
+    if (typeof options.style == 'string') {
+      if(options.style.indexOf(':') == -1) {
+        var cssText = '', selector = '.' + options.style;
+        $A(document.styleSheets).reverse().each(function(styleSheet) {
+          if (styleSheet.cssRules) cssRules = styleSheet.cssRules;
+          else if (styleSheet.rules) cssRules = styleSheet.rules;
+          $A(cssRules).reverse().each(function(rule) {
+            if (selector == rule.selectorText) {
+              cssText = rule.style.cssText;
+              throw $break;
+            }
+          });
+          if (cssText) throw $break;
+        });
+        this.style = cssText.parseStyle();
+        options.afterFinishInternal = function(effect){
+          effect.element.addClassName(effect.options.style);
+          effect.transforms.each(function(transform) {
+            if(transform.style != 'opacity')
+              effect.element.style[transform.style] = '';
+          });
+        }
+      } else this.style = options.style.parseStyle();
+    } else this.style = $H(options.style)
+    this.start(options);
+  },
+  setup: function(){
+    function parseColor(color){
+      if(!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
+      color = color.parseColor();
+      return $R(0,2).map(function(i){
+        return parseInt( color.slice(i*2+1,i*2+3), 16 ) 
+      });
+    }
+    this.transforms = this.style.map(function(pair){
+      var property = pair[0], value = pair[1], unit = null;
+
+      if(value.parseColor('#zzzzzz') != '#zzzzzz') {
+        value = value.parseColor();
+        unit  = 'color';
+      } else if(property == 'opacity') {
+        value = parseFloat(value);
+        if(Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
+          this.element.setStyle({zoom: 1});
+      } else if(Element.CSS_LENGTH.test(value)) {
+          var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/);
+          value = parseFloat(components[1]);
+          unit = (components.length == 3) ? components[2] : null;
+      }
+
+      var originalValue = this.element.getStyle(property);
+      return { 
+        style: property.camelize(), 
+        originalValue: unit=='color' ? parseColor(originalValue) : parseFloat(originalValue || 0), 
+        targetValue: unit=='color' ? parseColor(value) : value,
+        unit: 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 = {}, transform, i = this.transforms.length;
+    while(i--)
+      style[(transform = this.transforms[i]).style] = 
+        transform.unit=='color' ? '#'+
+          (Math.round(transform.originalValue[0]+
+            (transform.targetValue[0]-transform.originalValue[0])*position)).toColorPart() +
+          (Math.round(transform.originalValue[1]+
+            (transform.targetValue[1]-transform.originalValue[1])*position)).toColorPart() +
+          (Math.round(transform.originalValue[2]+
+            (transform.targetValue[2]-transform.originalValue[2])*position)).toColorPart() :
+        transform.originalValue + Math.round(
+          ((transform.targetValue - transform.originalValue) * position) * 1000)/1000 + transform.unit;
+    this.element.setStyle(style, true);
+  }
+});
+
+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 = $w(
+  'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' + 
+  'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
+  'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
+  'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
+  'fontSize fontWeight height left letterSpacing lineHeight ' +
+  'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
+  'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
+  'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
+  'right textIndent top width wordSpacing zIndex');
+  
+Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;
+
+String.prototype.parseStyle = function(){
+  var element = document.createElement('div');
+  element.innerHTML = '<div style="' + this + '"></div>';
+  var style = element.childNodes[0].style, styleRules = $H();
+  
+  Element.CSS_PROPERTIES.each(function(property){
+    if(style[property]) styleRules[property] = style[property]; 
+  });
+  if(Prototype.Browser.IE && this.indexOf('opacity') > -1) {
+    styleRules.opacity = this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1];
+  }
+  return styleRules;
+};
+
+Element.morph = function(element, style) {
+  new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || {}));
+  return element;
+};
+
+['getInlineOpacity','forceRerendering','setContentZoom',
+ 'collectTextNodes','collectTextNodesIgnoreClass','morph'].each( 
+  function(f) { Element.Methods[f] = Element[f]; }
+);
+
+Element.Methods.visualEffect = function(element, effect, options) {
+  s = effect.dasherize().camelize();
+  effect_class = s.charAt(0).toUpperCase() + s.substring(1);
+  new Effect[effect_class](element, options);
+  return $(element);
+};
+
+Element.addMethods();
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