// 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.  
	
	// 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(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, findFirst) {
	  var classNameRegExp = new RegExp("(^|\\s)" + className + "(\\s|$)");
	  var results = $A($(element).getElementsByTagName('*'))[findFirst ? 'detect' : 'select']( function(c) { 
		return (c.className && c.className.match(classNameRegExp));
	  });
	  if(!results) results = [];
	  return results;
	}
	
	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 = {
	  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'), limit: 1 }
		}, arguments[2] || {});
		Effect[element.visible() ? 
		  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;
	
		if(!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
		  this.effects.push(effect);
		
		if(!this.interval) 
		  this.interval = setInterval(this.loop.bind(this), 40);
	  },
	  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))
		  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);
		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: 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 = 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','%'].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 = 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';
		  }
		}
		this.element.setStyle(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(this.element.getStyle('display')=='none') { this.cancel(); return; }
		// Disable background image during the effect
		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();
		effect.element.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);
		effect.element.show(); 
	  }}, arguments[1] || {});
	  return new Effect.Opacity(element,options);
	}
	
	Effect.Puff = function(element) {
	  element = $(element);
	  var oldStyle = { opacity: element.getInlineOpacity(), position: element.getStyle('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) {
			effect.effects[0].element.setStyle({position: 'absolute'}); },
		  afterFinishInternal: function(effect) {
			 effect.effects[0].element.hide();
			 effect.effects[0].element.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();
			effect.element.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();
			effect.element.setStyle({height: '0px'});
			effect.element.show(); 
		  },  
		  afterFinishInternal: function(effect) {
			effect.element.undoClipping();
		  }
		}, arguments[1] || {})
	  );
	}
	
	Effect.SwitchOff = function(element) {
	  element = $(element);
	  var oldOpacity = element.getInlineOpacity();
	  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) { 
			  effect.element.makePositioned();
			  effect.element.makeClipping();
			},
			afterFinishInternal: function(effect) {
			  effect.element.hide();
			  effect.element.undoClipping();
			  effect.element.undoPositioned();
			  effect.element.setStyle({opacity: oldOpacity});
			}
		  })
		}
	  });
	}
	
	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();
			  effect.effects[0].element.undoPositioned();
			  effect.effects[0].element.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();
			effect.element.setStyle(oldStyle);
	  }}) }}) }}) }}) }}) }});
	}
	
	Effect.ShakeVertical = function(element) {
	  element = $(element);
	  var oldStyle = {
		top: Element.getStyle(element, 'top'),
		left: Element.getStyle(element, 'left') };
		  return new Effect.Move(element, 
			{ x:  0, y: 20, duration: 0.05, afterFinishInternal: function(effect) {
		  new Effect.Move(effect.element,
			{ x: 0, y: -40, duration: 0.1,  afterFinishInternal: function(effect) {
		  new Effect.Move(effect.element,
			{ x:  0, y: 40, duration: 0.1,  afterFinishInternal: function(effect) {
		  new Effect.Move(effect.element,
			{ x: 0, y: -40, duration: 0.1,  afterFinishInternal: function(effect) {
		  new Effect.Move(effect.element,
			{ x:  0, y: 40, duration: 0.1,  afterFinishInternal: function(effect) {
		  new Effect.Move(effect.element,
			{ x: 0, y: -20, duration: 0.05, afterFinishInternal: function(effect) { with(Element) {
			undoPositioned(effect.element);
			setStyle(effect.element, oldStyle);
	  }}}) }}) }}) }}) }}) }});
	}
	
	Effect.SlideDown = function(element) {
	  element = $(element);
	  element.cleanWhitespace();
	  // SlideDown need to have the content of the element wrapped in a container element with fixed height!
	  var oldInnerBottom = $(element.firstChild).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.firstChild.makePositioned();
		  if(window.opera) effect.element.setStyle({top: ''});
		  effect.element.makeClipping();
		  effect.element.setStyle({height: '0px'});
		  effect.element.show(); },
		afterUpdateInternal: function(effect) {
		  effect.element.firstChild.setStyle({bottom:
			(effect.dims[0] - effect.element.clientHeight) + 'px' }); 
		},
		afterFinishInternal: function(effect) {
		  effect.element.undoClipping(); 
		  // IE will crash if child is undoPositioned first
		  if(/MSIE/.test(navigator.userAgent)){
			effect.element.undoPositioned();
			effect.element.firstChild.undoPositioned();
		  }else{
			effect.element.firstChild.undoPositioned();
			effect.element.undoPositioned();
		  }
		  effect.element.firstChild.setStyle({bottom: oldInnerBottom}); }
		}, arguments[1] || {})
	  );
	}
	  
	Effect.SlideUp = function(element) {
	  element = $(element);
	  element.cleanWhitespace();
	  var oldInnerBottom = $(element.firstChild).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.firstChild.makePositioned();
		  if(window.opera) effect.element.setStyle({top: ''});
		  effect.element.makeClipping();
		  effect.element.show(); },  
		afterUpdateInternal: function(effect) {
		  effect.element.firstChild.setStyle({bottom:
			(effect.dims[0] - effect.element.clientHeight) + 'px' }); },
		afterFinishInternal: function(effect) {
		  effect.element.hide();
		  effect.element.undoClipping();
		  effect.element.firstChild.undoPositioned();
		  effect.element.undoPositioned();
		  effect.element.setStyle({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) {
			effect.element.makeClipping(effect.element); },  
		  afterFinishInternal: function(effect) {
			effect.element.hide(effect.element); 
			effect.element.undoClipping(effect.element); }
	  });
	}
	
	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();
		  effect.element.makeClipping();
		  effect.element.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'});
				   effect.effects[0].element.show(); 
				 },
				 afterFinishInternal: function(effect) {
				   effect.effects[0].element.undoClipping();
				   effect.effects[0].element.undoPositioned();
				   effect.effects[0].element.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();
			   effect.effects[0].element.makeClipping(); },
			 afterFinishInternal: function(effect) {
			   effect.effects[0].element.hide();
			   effect.effects[0].element.undoClipping();
			   effect.effects[0].element.undoPositioned();
			   effect.effects[0].element.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)) };
	  reverser.bind(transition);
	  return new Effect.Opacity(element, 
		Object.extend(Object.extend({  duration: 3.0, 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(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) {
			effect.element.hide();
			effect.element.undoClipping(); 
			effect.element.setStyle(oldStyle);
		  } });
	  }}, arguments[1] || {}));
	};
		
	['setOpacity','getOpacity','getInlineOpacity','forceRerendering','setContentZoom',
	 'collectTextNodes','collectTextNodesIgnoreClass','childrenWithClassName'].each( 
	  function(f) { Element.Methods[f] = Element[f]; }
	);
	
	Element.Methods.visualEffect = function(element, effect, options) {
	  s = effect.gsub(/_/, '-').camelize();
	  effect_class = s.charAt(0).toUpperCase() + s.substring(1);
	  new Effect[effect_class](element, options);
	  return $(element);
	};
	
	Element.addMethods();
	
	
	// New Effects !
	
	Effect.DropIn = function(element) {
	  element = $(element);
	  var oldTop = element.style.top;
	  var oldLeft = element.style.left;
	  var pos = Position.cumulativeOffset(element);
	   return new Effect.Parallel(
		[ new Effect.MoveBy(element, 100, 0, { sync: true }), 
		  new Effect.Opacity(element, { sync: true, from:0.0, to: 1.0 }) ],
		Object.extend(
		  { duration: 0.5,
			beforeSetup: function(effect) { 
			  Element.makePositioned(effect.effects[0].element); 
			  Element.setOpacity(element, 0);
			  element.style.position = 'absolute'; 
			  element.style.top = (pos[1]-100) + 'px'; 
			}
		  }, arguments[1] || {}));
	}