// Copyright (c) 2005 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.  
  
  /* ------------- element ext -------------- */  
   
  // 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.collectTextNodes(node) : ''));
    }).flatten().join('');
  }
  
  Element.setStyle = function(element, style) {
    element = element;
    for(k in style) element.style[k.camelize()] = style[k];
  }
  
  Element.setContentZoom = function(element, percent) {  
    Element.setStyle(element, {fontSize: (percent/100) + 'em'});   
    if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);  
  }
  
  Element.getOpacity = function(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;  
  }
  
  Element.setOpacity = function(element, value){  
    element= element;  
    if (value == 1){
      Element.setStyle(element, { opacity: 
        (/Gecko/.test(navigator.userAgent) && !/Konqueror|Safari|KHTML/.test(navigator.userAgent)) ? 
        0.999999 : null });
      if(/MSIE/.test(navigator.userAgent))  
        Element.setStyle(element, {filter: Element.getStyle(element,'filter').replace(/alpha\([^\)]*\)/gi,'')});  
    } else {  
      if(value < 0.00001) value = 0;  
      Element.setStyle(element, {opacity: value});
      if(/MSIE/.test(navigator.userAgent))  
       Element.setStyle(element, 
         { filter: Element.getStyle(element,'filter').replace(/alpha\([^\)]*\)/gi,'') +
                   'alpha(opacity='+value*100+')' });  
    }   
  }  
   
  Element.getInlineOpacity = function(element){  
    return element.style.opacity || '';
  }  
  
  Element.childrenWithClassName = function(element, className) {  
    return $$A(element.getElementsByTagName('*')).select(
      function(c) { return Element.hasClassName(c, className) });
  }
  
  Array.prototype.call = function() {
    var args = arguments;
    this.each(function(f){ f.apply(this, args) });
  }
  
  /*--------------------------------------------------------------------------*/
  
  var Effect = {
    tagifyText: function(element) {
      var tagifyStyle = 'position:relative';
      if(/MSIE/.test(navigator.userAgent)) 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') }
      }, arguments[2] || {});
      Effect[Element.visible(element) ? 
        Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
    }
  };
  
  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;
  }
  
  /* ------------- 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 'end':
          // start effect after last queued effect has finished
          timestamp = this.effects.pluck('finishOn').max() || timestamp;
          break;
      }
      
      effect.startOn  += timestamp;
      effect.finishOn += timestamp;
      this.effects.push(effect);
      if(!this.interval) 
        this.interval = setInterval(this.loop.bind(this), 40);
    },
    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();
      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,
    start: function(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.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.finishOn - this.startOn);
        var frame = Math.round(pos * this.options.fps * this.options.duration);
        if(frame > this.currentFrame) {
          this.render(pos);
          this.currentFrame = frame;
        }
      }
    },
    render: function(pos) {
      if(this.state == 'idle') {
        this.state = 'running';
        this.event('beforeSetup');
        if(this.setup) this.setup();
        this.event('afterSetup');
      }
      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.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() + '>';
    }
  }
  
  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.Opacity = Class.create();
  Object.extend(Object.extend(Effect.Opacity.prototype, Effect.Base.prototype), {
    initialize: function(element) {
      this.element = element;
      // make this work on IE on elements without 'layout'
      if(/MSIE/.test(navigator.userAgent) && (!this.element.hasLayout))
        Element.setStyle(this.element, {zoom: 1});
      var options = Object.extend({
        from: Element.getOpacity(this.element) || 0.0,
        to:   1.0
      }, arguments[1] || {});
      this.start(options);
    },
    update: function(position) {
      Element.setOpacity(this.element, position);
    }
  });
  
  Effect.Move = Class.create();
  Object.extend(Object.extend(Effect.Move.prototype, Effect.Base.prototype), {
    initialize: function(element) {
      this.element = element;
      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.originalLeft = parseFloat(Element.getStyle(this.element,'left') || '0');
      this.originalTop  = parseFloat(Element.getStyle(this.element,'top')  || '0');
      if(this.options.mode == 'absolute') {
        // absolute movement, so we need to calc deltaX and deltaY
        this.options.x = this.options.x - this.originalLeft;
        this.options.y = this.options.y - this.originalTop;
      }
    },
    update: function(position) {
      Element.setStyle(this.element, {
        left: this.options.x  * position + this.originalLeft + 'px',
        top:  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
      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 = Element.getStyle(this.element,'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 = Element.getStyle(this.element,'font-size') || '100%';
      ['em','px','%'].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)
        Element.setStyle(this.element, {fontSize: this.fontSize * currentScale + this.fontSizeType });
      this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
    },
    finish: function(position) {
      if (this.restoreAfterFinish) Element.setStyle(this.element, this.originalStyle);
    },
    setDimensions: function(height, width) {
      var d = {};
      if(this.options.scaleX) d.width = width + 'px';
      if(this.options.scaleY) d.height = height + 'px';
      if(this.options.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';
        }
      }
      Element.setStyle(this.element, d);
    }
  });
  
  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] || {});
      this.start(options);
    },
    setup: function() {
      // Prevent executing on elements not in the layout flow
      if(Element.getStyle(this.element, 'display')=='none') { this.cancel(); return; }
      // Disable background image during the effect
      this.oldStyle = {
        backgroundImage: Element.getStyle(this.element, 'background-image') };
      Element.setStyle(this.element, {backgroundImage: 'none'});
      if(!this.options.endcolor)
        this.options.endcolor = Element.getStyle(this.element, 'background-color').parseColor('#ffffff');
      if(!this.options.restorecolor)
        this.options.restorecolor = Element.getStyle(this.element, 'background-color');
      // init color calculations
      this._base  = $$R(0,2).map(function(i){ return parseInt(this.options.startcolor.slice(i*2+1,i*2+3),16) }.bind(this));
      this._delta = R(0,2).map(function(i){ return parseInt(this.options.endcolor.slice(i*2+1,i*2+3),16)-this._base[i] }.bind(this));
    },
    update: function(position) {
      Element.setStyle(this.element,{backgroundColor: $$R(0,2).inject('#',function(m,v,i){
        return m+(Math.round(this._base[i]+(this._delta[i]*position)).toColorPart()); }.bind(this)) });
    },
    finish: function() {
      Element.setStyle(this.element, 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) {
    var oldOpacity = Element.getInlineOpacity(element);
    var options = Object.extend({
    from: Element.getOpacity(element) || 1.0,
    to:   0.0,
    afterFinishInternal: function(effect) { with(Element) { 
      if(effect.options.to!=0) return;
      hide(effect.element);
      setStyle(effect.element, {opacity: oldOpacity}); }
    }, arguments[1] || {});
    return new Effect.Opacity(element,options);
  }
  
  Effect.Appear = function(element) {
    var options = Object.extend({
    from: (Element.getStyle(element, 'display') == 'none' ? 0.0 : Element.getOpacity(element) || 0.0),
    to:   1.0,
    beforeSetup: function(effect) { with(Element) {
      setOpacity(effect.element, effect.options.from);
      show(effect.element); }
    }, arguments[1] || {});
    return new Effect.Opacity(element,options);
  }
  
  Effect.Puff = function(element) {
    element = element;
    var oldStyle = { opacity: Element.getInlineOpacity(element), position: Element.getStyle(element, 'position') };
    return new Effect.Parallel(
     [ new Effect.Scale(element, 200, 
        { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }), 
       new Effect.Opacity(element, { sync: true, to: 0.0 } ) ], 
       Object.extend({ duration: 1.0, 
        beforeSetupInternal: function(effect) { with(Element) {
          setStyle(effect.effects[0].element, {position: 'absolute'}); },
        afterFinishInternal: function(effect) { with(Element) {
           hide(effect.effects[0].element);
           setStyle(effect.effects[0].element, oldStyle); }
       }, arguments[1] || {})
     );
  }
  
  Effect.BlindUp = function(element) {
    element = element;
    Element.makeClipping(element);
    return new Effect.Scale(element, 0, 
      Object.extend({ scaleContent: false, 
        scaleX: false, 
        restoreAfterFinish: true,
        afterFinishInternal: function(effect) { with(Element) {
          [hide, undoClipping].call(effect.element); } 
      }, arguments[1] || {})
    );
  }
  
  Effect.BlindDown = function(element) {
    element = element;
    var oldHeight = Element.getStyle(element, 'height');
    var elementDimensions = Element.getDimensions(element);
    return new Effect.Scale(element, 100, 
      Object.extend({ scaleContent: false, 
        scaleX: false,
        scaleFrom: 0,
        scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
        restoreAfterFinish: true,
        afterSetup: function(effect) { with(Element) {
          makeClipping(effect.element);
          setStyle(effect.element, {height: '0px'});
          show(effect.element); 
        },  
        afterFinishInternal: function(effect) { with(Element) {
          undoClipping(effect.element);
          setStyle(effect.element, {height: oldHeight});
        }
      }, arguments[1] || {})
    );
  }
  
  Effect.SwitchOff = function(element) {
    element = element;
    var oldOpacity = Element.getInlineOpacity(element);
    return new Effect.Appear(element, { 
      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) { with(Element) {
            [makePositioned,makeClipping].call(effect.element);
          },
          afterFinishInternal: function(effect) { with(Element) {
            [hide,undoClipping,undoPositioned].call(effect.element);
            setStyle(effect.element, {opacity: oldOpacity});
          }
        })
      }
    });
  }
  
  Effect.DropOut = function(element) {
    element = element;
    var oldStyle = {
      top: Element.getStyle(element, 'top'),
      left: Element.getStyle(element, 'left'),
      opacity: Element.getInlineOpacity(element) };
    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) { with(Element) {
            makePositioned(effect.effects[0].element); },
          afterFinishInternal: function(effect) { with(Element) {
            [hide, undoPositioned].call(effect.effects[0].element);
            setStyle(effect.effects[0].element, oldStyle); } 
        }, arguments[1] || {}));
  }
  
  Effect.Shake = function(element) {
    element = element;
    var oldStyle = {
      top: Element.getStyle(element, 'top'),
      left: Element.getStyle(element, '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) { with(Element) {
          undoPositioned(effect.element);
          setStyle(effect.element, oldStyle);
    }}) }) }) }) }) });
  }
  
  Effect.SlideDown = function(element) {
    element = element;
    Element.cleanWhitespace(element);
    // SlideDown need to have the content of the element wrapped in a container element with fixed height!
    var oldInnerBottom = Element.getStyle(element.firstChild, 'bottom');
    var elementDimensions = Element.getDimensions(element);
    return new Effect.Scale(element, 100, Object.extend({ 
      scaleContent: false, 
      scaleX: false, 
      scaleFrom: 0,
      scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
      restoreAfterFinish: true,
      afterSetup: function(effect) { with(Element) {
        makePositioned(effect.element);
        makePositioned(effect.element.firstChild);
        if(window.opera) setStyle(effect.element, {top: ''});
        makeClipping(effect.element);
        setStyle(effect.element, {height: '0px'});
        show(element); },
      afterUpdateInternal: function(effect) { with(Element) {
        setStyle(effect.element.firstChild, {bottom:
          (effect.dims[0] - effect.element.clientHeight) + 'px' }); },
      afterFinishInternal: function(effect) { with(Element) {
        undoClipping(effect.element); 
        undoPositioned(effect.element.firstChild);
        undoPositioned(effect.element);
        setStyle(effect.element.firstChild, {bottom: oldInnerBottom}); }
      }, arguments[1] || {})
    );
  }
    
  Effect.SlideUp = function(element) {
    element = element;
    Element.cleanWhitespace(element);
    var oldInnerBottom = Element.getStyle(element.firstChild, 'bottom');
    return new Effect.Scale(element, 0, 
     Object.extend({ scaleContent: false, 
      scaleX: false, 
      scaleMode: 'box',
      scaleFrom: 100,
      restoreAfterFinish: true,
      beforeStartInternal: function(effect) { with(Element) {
        makePositioned(effect.element);
        makePositioned(effect.element.firstChild);
        if(window.opera) setStyle(effect.element, {top: ''});
        makeClipping(effect.element);
        show(element); },  
      afterUpdateInternal: function(effect) { with(Element) {
        setStyle(effect.element.firstChild, {bottom:
          (effect.dims[0] - effect.element.clientHeight) + 'px' }); },
      afterFinishInternal: function(effect) { with(Element) {
          [hide, undoClipping].call(effect.element); 
          undoPositioned(effect.element.firstChild);
          undoPositioned(effect.element);
          setStyle(effect.element.firstChild, {bottom: oldInnerBottom}); }
     }, arguments[1] || {})
    );
  }
  
  // Bug in opera makes the TD containing this element expand for a instance after finish 
  Effect.Squish = function(element) {
    return new Effect.Scale(element, window.opera ? 1 : 0, 
      { restoreAfterFinish: true,
        beforeSetup: function(effect) { with(Element) {
          makeClipping(effect.element); },  
        afterFinishInternal: function(effect) { with(Element) {
          hide(effect.element); 
          undoClipping(effect.element); }
    });
  }
  
  Effect.Grow = function(element) {
    element = element;
    var options = Object.extend({
      direction: 'center',
      moveTransistion: 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(element) };
  
    var dims = Element.getDimensions(element);    
    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) { with(Element) {
        hide(effect.element);
        makeClipping(effect.element);
        makePositioned(effect.element);
      },
      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) { with(Element) {
                 setStyle(effect.effects[0].element, {height: '0px'});
                 show(effect.effects[0].element); },
               afterFinishInternal: function(effect) { with(Element) {
                 [undoClipping, undoPositioned].call(effect.effects[0].element); 
                 setStyle(effect.effects[0].element, oldStyle); }
             }, options)
        )
      }
    });
  }
  
  Effect.Shrink = function(element) {
    element = element;
    var options = Object.extend({
      direction: 'center',
      moveTransistion: 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(element) };
  
    var dims = Element.getDimensions(element);
    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) { with(Element) {
             [makePositioned, makeClipping].call(effect.effects[0].element) },
           afterFinishInternal: function(effect) { with(Element) {
             [hide, undoClipping, undoPositioned].call(effect.effects[0].element);
             setStyle(effect.effects[0].element, oldStyle); }
         }, options)
    );
  }
  
  Effect.Pulsate = function(element) {
    element = element;
    var options    = arguments[1] || {};
    var oldOpacity = Element.getInlineOpacity(element);
    var transition = options.transition || Effect.Transitions.sinoidal;
    var reverser   = function(pos){ return transition(1-Effect.Transitions.pulse(pos)) };
    reverser.bind(transition);
    return new Effect.Opacity(element, 
      Object.extend(Object.extend({  duration: 3.0, from: 0,
        afterFinishInternal: function(effect) { Element.setStyle(effect.element, {opacity: oldOpacity}); }
      }, 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(element);
    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) { with(Element) {
          [hide, undoClipping].call(effect.element); 
          setStyle(effect.element, oldStyle);
        } });
    }, arguments[1] || {}));
  }