// script.aculo.us effects.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008

// 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) { }
};

/*--------------------------------------------------------------------------*/

var Effect = {
	_elementDoesNotExistError: {
		name: 'ElementDoesNotExistError',
		message: 'The specified DOM element does not exist, but is required for this effect to operate'
	},
	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 (
				((pos % (1/pulses)) * pulses).round() == 0 ? 
							((pos * pulses * 2) - (pos * pulses * 2).floor()) : 
					1 - ((pos * pulses * 2) - (pos * pulses * 2).floor())
				);
		},
		spring: function(pos) { 
			return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6)); 
		},
		none: function(pos) {
			return 0;
		},
		full: function(pos) {
			return 1;
		}
	},
	DefaultOptions: {
		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'
	},
	tagifyText: function(element) {
		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(
						new Element('span', {style: tagifyStyle}).update(
							character == ' ' ? String.fromCharCode(160) : character), 
							child);
				});
				Element.remove(child);
			}
		});
	},
	multiple: function(element, effect) {
		var elements;
		if (((typeof element == 'object') || 
				Object.isFunction(element)) && 
			 (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);
	}
};

Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;

/* ------------- core effects ------------- */

Effect.ScopedQueue = Class.create(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 = Object.isString(effect.options.queue) ? 
			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 (!Object.isString(queueName)) return queueName;
		
		return this.instances.get(queueName) ||
			this.instances.set(queueName, new Effect.ScopedQueue());
	}
};
Effect.Queue = Effect.Queues.get('global');

Effect.Base = Class.create({
	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 && 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(this.options,'beforeSetup')+
			(this.setup ? 'this.setup();':'')+ 
			codeForEvent(this.options,'afterSetup')+
			'};if (this.state=="running"){'+
			'pos=this.options.transition(pos)*'+this.fromToDelta+'+'+this.options.from+';'+
			'this.position=pos;'+
			codeForEvent(this.options,'beforeUpdate')+
			(this.update ? 'this.update(pos);':'')+
			codeForEvent(this.options,'afterUpdate')+
			'}}');
		
		this.event('beforeStart');
		if (!this.options.sync)
			Effect.Queues.get(Object.isString(this.options.queue) ? 
				'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 = (pos * this.totalFrames).round();
			if (frame > this.currentFrame) {
				this.render(pos);
				this.currentFrame = frame;
			}
		}
	},
	cancel: function() {
		if (!this.options.sync)
			Effect.Queues.get(Object.isString(this.options.queue) ? 
				'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 (!Object.isFunction(this[property])) data.set(property, this[property]);
		return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
	}
});

Effect.Parallel = Class.create(Effect.Base, {
	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.Tween = Class.create(Effect.Base, {
	initialize: function(object, from, to) {
		object = Object.isString(object) ? $(object) : object;
		var args = $A(arguments), method = args.last(), 
			options = args.length == 5 ? args[3] : null;
		this.method = Object.isFunction(method) ? method.bind(object) :
			Object.isFunction(object[method]) ? object[method].bind(object) : 
			function(value) { object[method] = value };
		this.start(Object.extend({ from: from, to: to }, options || { }));
	},
	update: function(position) {
		this.method(position);
	}
});

Effect.Event = Class.create(Effect.Base, {
	initialize: function() {
		this.start(Object.extend({ duration: 0 }, arguments[0] || { }));
	},
	update: Prototype.emptyFunction
});

Effect.Opacity = Class.create(Effect.Base, {
	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(Effect.Base, {
	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() {
		this.element.makePositioned();
		this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
		this.originalTop	= parseFloat(this.element.getStyle('top')	|| '0');
		if (this.options.mode == 'absolute') {
			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).round() + 'px',
			top:	(this.options.y	* position + this.originalTop).round()	+ '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(Effect.Base, {
	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 = width.round() + 'px';
		if (this.options.scaleY) d.height = height.round() + '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(Effect.Base, {
	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+((this._base[i]+(this._delta[i]*position)).round().toColorPart()); }.bind(this)) });
	},
	finish: function() {
		this.element.setStyle(Object.extend(this.oldStyle, {
			backgroundColor: this.options.restorecolor
		}));
	}
});

Effect.ScrollTo = function(element) {
	var options = arguments[1] || { },
		scrollOffsets = document.viewport.getScrollOffsets(),
		elementOffsets = $(element).cumulativeOffset(),
		max = (window.height || document.body.scrollHeight) - document.viewport.getHeight();	

	if (options.offset) elementOffsets[1] += options.offset;

	return new Effect.Tween(null,
		scrollOffsets.top,
		elementOffsets[1] > max ? max : elementOffsets[1],
		options,
		function(p){ scrollTo(scrollOffsets.left, p.round()) }
	);
};

/* ------------- 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 options = Object.extend({
		distance: 20,
		duration: 0.5
	}, arguments[1] || {});
	var distance = parseFloat(options.distance);
	var split = parseFloat(options.duration) / 10.0;
	var oldStyle = {
		top: element.getStyle('top'),
		left: element.getStyle('left') };
		return new Effect.Move(element,
			{ x:	distance, y: 0, duration: split, afterFinishInternal: function(effect) {
		new Effect.Move(effect.element,
			{ x: -distance*2, y: 0, duration: split*2,	afterFinishInternal: function(effect) {
		new Effect.Move(effect.element,
			{ x:	distance*2, y: 0, duration: split*2,	afterFinishInternal: function(effect) {
		new Effect.Move(effect.element,
			{ x: -distance*2, y: 0, duration: split*2,	afterFinishInternal: function(effect) {
		new Effect.Move(effect.element,
			{ x:	distance*2, y: 0, duration: split*2,	afterFinishInternal: function(effect) {
		new Effect.Move(effect.element,
			{ x: -distance, y: 0, duration: split, 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');
	var elementDimensions = element.getDimensions();
	return new Effect.Scale(element, window.opera ? 0 : 1,
	 Object.extend({ scaleContent: false, 
		scaleX: false, 
		scaleMode: 'box',
		scaleFrom: 100,
		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().show();
		},	
		afterUpdateInternal: function(effect) {
			effect.element.down().setStyle({bottom:
				(effect.dims[0] - effect.element.clientHeight) + 'px' });
		},
		afterFinishInternal: function(effect) {
			effect.element.hide().undoClipping().undoPositioned();
			effect.element.down().undoPositioned().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(); 
		},	
		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(Effect.Base, {
	initialize: function(element) {
		this.element = $(element);
		if (!this.element) throw(Effect._elementDoesNotExistError);
		var options = Object.extend({
			style: { }
		}, arguments[1] || { });
		
		if (!Object.isString(options.style)) this.style = $H(options.style);
		else {
			if (options.style.include(':'))
				this.style = options.style.parseStyle();
			else {
				this.element.addClassName(options.style);
				this.style = $H(this.element.getStyles());
				this.element.removeClassName(options.style);
				var css = this.element.getStyles();
				this.style = this.style.reject(function(style) {
					return style.value == css[style.key];
				});
				options.afterFinishInternal = function(effect) {
					effect.element.addClassName(effect.options.style);
					effect.transforms.each(function(transform) {
						effect.element.style[transform.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 +
					(transform.targetValue - transform.originalValue) * position).toFixed(3) + 
						(transform.unit === null ? '' : transform.unit);
		this.element.setStyle(style, true);
	}
});

Effect.Transform = Class.create({
	initialize: function(tracks){
		this.tracks	= [];
		this.options = arguments[1] || { };
		this.addTracks(tracks);
	},
	addTracks: function(tracks){
		tracks.each(function(track){
			track = $H(track);
			var data = track.values().first();
			this.tracks.push($H({
				ids:		 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 ids = track.get('ids'), effect = track.get('effect'), options = track.get('options');
				var elements = [$(ids) || $$(ids)].flatten();
				return elements.map(function(e){ return new effect(e, Object.extend({ sync:true }, 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.__parseStyleElement = document.createElement('div');
String.prototype.parseStyle = function(){
	var style, styleRules = $H();
	if (Prototype.Browser.WebKit)
		style = new Element('div',{style:this}).style;
	else {
		String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
		style = String.__parseStyleElement.childNodes[0].style;
	}
	
	Element.CSS_PROPERTIES.each(function(property){
		if (style[property]) styleRules.set(property, style[property]); 
	});
	
	if (Prototype.Browser.IE && this.include('opacity'))
		styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);

	return styleRules;
};

if (document.defaultView && document.defaultView.getComputedStyle) {
	Element.getStyles = function(element) {
		var css = document.defaultView.getComputedStyle($(element), null);
		return Element.CSS_PROPERTIES.inject({ }, function(styles, property) {
			styles[property] = css[property];
			return styles;
		});
	};
} else {
	Element.getStyles = function(element) {
		element = $(element);
		var css = element.currentStyle, styles;
		styles = Element.CSS_PROPERTIES.inject({ }, function(results, property) {
			results[property] = css[property];
			return results;
		});
		if (!styles.opacity) styles.opacity = element.getOpacity();
		return styles;
	};
};

Effect.Methods = {
	morph: function(element, style) {
		element = $(element);
		new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || { }));
		return element;
	},
	visualEffect: function(element, effect, options) {
		element = $(element)
		var s = effect.dasherize().camelize(), klass = s.charAt(0).toUpperCase() + s.substring(1);
		new Effect[klass](element, options);
		return element;
	},
	highlight: function(element, options) {
		element = $(element);
		new Effect.Highlight(element, options);
		return element;
	}
};

$w('fade appear grow shrink fold blindUp blindDown slideUp slideDown '+
	'pulsate shake puff squish switchOff dropOut').each(
	function(effect) { 
		Effect.Methods[effect] = function(element, options){
			element = $(element);
			Effect[effect.charAt(0).toUpperCase() + effect.substring(1)](element, options);
			return element;
		}
	}
);

$w('getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles').each( 
	function(f) { Effect.Methods[f] = Element[f]; }
);

Element.addMethods(Effect.Methods);