// script.aculo.us effects.js v1.8.2, Tue Nov 18 18:30:58 +0100 2008

// Copyright (c) 2005-2008 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) + .5;
		},
		reverse: function(pos) {
			return 1 - pos;
		},
		flicker: function(pos) {
			var pos = ((-Math.cos(pos * Math.PI) / 4) + .75) + Math.random() / 4;
			return pos > 1 ? 1 : pos;
		},
		wobble: function(pos) {
			return (-Math.cos(pos * Math.PI * (9 * pos)) / 2) + .5;
		},
		pulse: function(pos, pulses) {
			return (-Math.cos((pos * ((pulses || 5) - .5) * 2) * Math.PI) / 2) + .5;
		},
		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;
		
		this.render = (function() {
			function dispatch(effect, eventName) {
				if (effect.options[eventName + 'Internal']) 
					effect.options[eventName + 'Internal'](effect);
				if (effect.options[eventName]) 
					effect.options[eventName](effect);
			}
			
			return function(pos) {
				if (this.state === "idle") {
					this.state = "running";
					dispatch(this, 'beforeSetup');
					if (this.setup) 
						this.setup();
					dispatch(this, 'afterSetup');
				}
				if (this.state === "running") {
					pos = (this.options.transition(pos) * this.fromToDelta) + this.options.from;
					this.position = pos;
					dispatch(this, 'beforeUpdate');
					if (this.update) 
						this.update(pos);
					dispatch(this, '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();
	
	if (options.offset) 
		elementOffsets[1] += options.offset;
	
	return new Effect.Tween(null, scrollOffsets.top, 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] ||
	{}, oldOpacity = element.getInlineOpacity(), transition = options.transition || Effect.Transitions.linear, reverser = function(pos) {
		return 1 - transition((-Math.cos((pos * (options.pulses || 5) * 2) * Math.PI) / 2) + .5);
	};
	
	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);