//1.2
var mootabs = new Class({
	
	initialize: function(element, options) {
		obj = {
			type:				'horizontal',
			width:				'300px',
			height:				'200px',
			changeTransition:	'none',
			duration:			1000,
			mouseOverClass:		'active',
			useAjax: 			false,
			activateOnLoad:		'first',
			ajaxLoadingText: 	'Loading...'
		};
		this.options=$merge(obj,options);
		
		this.el = $(element);
		this.elid = element;
		if(this.el){
		this.el.setStyles({
			height: this.options.height,
			width: this.options.width
		});}

		this.titles = $$('#' + this.elid + ' ul.mootabs_title li');
		this.panelHeight = this.el.getSize().y - (this.titles[0].getSize().y + 4);
		this.panels = $$('#' + this.elid + ' .mootabs_panel');

	//	if(!Browser.Engine.trident){
			this.panels.each(function (item) { item.setStyle('height', this.panelHeight);});
	//	}
		this.titles.each(function(item) {
			item.addEvent('click', function(){
					item.removeClass(this.options.mouseOverClass);
					this.activate(item);
				}.bind(this)
			);
			
			item.addEvent('mouseover', function() {
				if(item != this.activeTitle)
				{
					item.addClass(this.options.mouseOverClass);
				}
			}.bind(this));
			
			item.addEvent('mouseout', function() {
				if(item != this.activeTitle)
				{
					item.removeClass(this.options.mouseOverClass);
				}
			}.bind(this));
		}.bind(this));
		
		
		if(this.options.activateOnLoad != 'none')
		{
			if(this.options.activateOnLoad == 'first')
			{
			
				this.activate(this.titles[0], true);
				
			}
			else
			{
				this.activate(this.options.activateOnLoad, true);	
			}
		}
	},
	
	activate: function(tab, skipAnim){
		if(! $defined(skipAnim))
		{
			skipAnim = false;
		}
		if($type(tab) == 'string') 
		{
			myTab = $$('#' + this.elid + ' ul li[title='+tab+']')[0];
			tab = myTab;
		}
		
		if($type(tab) == 'element')
		{
			var newTab = tab.getProperty('title');
			this.panels.removeClass('active');
			
			this.activePanel = this.panels.filter(function(item, index){
    			return item.id==newTab;
			})[0];
			
			this.activePanel.addClass('active');
			
			if(this.options.changeTransition != 'none' && skipAnim===false)
			{
				this.panels.filterById(newTab).setStyle('height', 0);
				var changeEffect = new Fx.Elements(this.panels.filterById(newTab), {duration: this.options.duration, transition: this.options.changeTransition});
				changeEffect.start({
					'0': {
						'height': [0, this.panelHeight]
					}
				});
			}
			
			this.titles.removeClass('active');
			
			tab.addClass('active');
			
			this.activeTitle = tab;
			if(this.options.useAjax)
			{
				this._getContent();
			}
		}
	},
	
	_getContent: function(){
		this.activePanel.set("html",this.options.ajaxLoadingText);
		currentUrl=this.options.ajaxUrls[this.activePanel.getProperty('id')];
		if(currentUrl){
			htmlRequest=new Request.HTML({url:currentUrl,update:this.activePanel});
			htmlRequest.get();
		}
	},
	
	addTab: function(title, label, content){
		//the new title
		var newTitle = new Element('li', {
			'title': title
		});
		newTitle.appendText(label);
		this.titles.include(newTitle);
		$$('#' + this.elid + ' ul').adopt(newTitle);
		newTitle.addEvent('click', function() {
			this.activate(newTitle);
		}.bind(this));
		
		newTitle.addEvent('mouseover', function() {
			if(newTitle != this.activeTitle)
			{
				newTitle.addClass(this.options.mouseOverClass);
			}
		}.bind(this));
		newTitle.addEvent('mouseout', function() {
			if(newTitle != this.activeTitle)
			{
				newTitle.removeClass(this.options.mouseOverClass);
			}
		}.bind(this));
		//the new panel
		var newPanel = new Element('div', {
			'style': {'height': this.options.panelHeight},
			'id': title,
			'class': 'mootabs_panel'
		});
		if(!this.options.useAjax)
		{
			newPanel.set("html",content);
		}
		this.panels.include(newPanel);
		this.el.adopt(newPanel);
	},
	
	removeTab: function(title){
		if(this.activeTitle.title == title)
		{
			this.activate(this.titles[0]);
		}
		$$('#' + this.elid + ' ul li').filter((function(item, index){
    			return item.title==title;
		}))[0].dispose();
		$$('#' + this.elid + ' .mootabs_panel').filter((function(item, index){
    			return item.id==title;
		}))[0].dispose();
	},
	
	next: function(){
		var nextTab = this.activeTitle.getNext();
		if(!nextTab) {
			nextTab = this.titles[0];
		}
		this.activate(nextTab);
	},
	
	previous: function(){
		var previousTab = this.activeTitle.getPrevious();
		if(!previousTab) {
			previousTab = this.titles[this.titles.length - 1];
		}
		this.activate(previousTab);
	}
});