var JATabs = new Class({	

	initialize: function(element, options) {

		this.options = Object.extend({

			position:			'top',

			width:				'100%',

			height:				'auto',

			skipAnim:			false,

			animType:			'animMoveHor',

			mouseType:			'mouseover',

			changeTransition:	Fx.Transitions.Pow.easeIn,

			duration:			1000,

			mouseOverClass:		'hover',

			activateOnLoad:		'first'

		}, options || {});



		this.el = $(element);

		this.elid = element;		

				

		this._w = this.el.offsetWidth.toInt();

		this._H = this.el.offsetHeight.toInt();

		

		this.titles = $$('#' + this.elid + ' div.ja-tabs-title-'+this.options.position+' ul li');



		this.panels = $$('#' + this.elid + ' .ja-tab-content');

		this.titles.each(function(el,i){

			el.panel = this.panels[i];

		},this);

		//add 

		if (this.panels.length <= 1)

		{

			this.panels.setStyle('padding', '0 20px');

			return;

		}

		

		this.titles.each(function(item) {

			item.addEvent(this.options.mouseType, function(){

					//add 2			

					if (item.className.indexOf('active') != -1) return;

					item.removeClass(this.options.mouseOverClass);

					this.activate(item, this.options.skipAnim);						

				}.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));

		

		//add

		this.titles[0].className = 'first';

		this.titles[this.titles.length-1].className = 'last';

		

		this.panelwrap = $E('.ja-tab-panels-'+this.options.position, this.el);	

		

		if (this.options.skipAnim) this.options.animType = 'animNone';

		this.anim = eval ('new '+this.options.animType + '(this)');

		if (!this.anim) this.anim = new animNone(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').filterByAttribute('title', '=', tab)[0];

			tab = myTab;

		}

		

		if($type(tab) == 'element')

		{

			//add 5

			var newTab = tab.panel;

			var curTab = this.activePanel;

			this.activePanel = newTab;

			

			this.anim.move (curTab, newTab, skipAnim);

			

			this.titles.removeClass('active');

			

			if (this.activeTitle)

				this.activeTitle.className = this.activeTitle.className.replace(new RegExp("active"), "");

			tab.className = tab.className.replace(new RegExp(this.options.mouseOverClass), "");

			

			tab.className += 'active';

			

			this.activeTitle = tab;

			

			if(this.options.useAjax)

			{

				this._getContent();

			}



		}

	},



	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);

	}

});

var animNone = new Class ({

	initialize: function(tabwrap) {

		this.options = tabwrap.options || {};

		this.tabwrap = tabwrap;



		this.tabwrap.panels.setStyle('position', 'absolute');

		this.tabwrap.panels.setStyle('left', 0);

	},



	move: function (curTab, newTab, skipAnim) {

		this.tabwrap.panels.setStyle('display', 'none');

		newTab.setStyle('display', 'block');

	}

});



var animFade = new Class ({

	initialize: function(tabwrap) {

		this.options = tabwrap.options || {};

		this.tabwrap = tabwrap;



		this.tabwrap.panels.setStyles({'opacity':0,'width':'100%'});

	},

//'position':'absolute','display':'block','left':0,

	move: function (curTab, newTab, skipAnim) {

		if(this.options.changeTransition != 'none' && skipAnim==false)

		{

			if (curTab)

			{

				curOpac = curTab.getStyle('opacity');

				var changeEffect = new Fx.Style(curTab, 'opacity', {duration: this.options.duration, transition: this.options.changeTransition});

				changeEffect.stop();

				changeEffect.start(curOpac,0);

			}

			curOpac = newTab.getStyle('opacity');

			var changeEffect = new Fx.Style(newTab, 'opacity', {duration: this.options.duration, transition: this.options.changeTransition});

			changeEffect.stop();

			changeEffect.start(curOpac,1);

		} else {

			if (curTab) curTab.setStyle('opacity', 0);

			newTab.setStyle('opacity', 1);

		}

	}

});



var animMoveHor = new Class ({

	initialize: function(tabwrap) {

		this.options = tabwrap.options || {};

		this.tabwrap = tabwrap;

		this.changeEffect = new Fx.Elements(this.tabwrap.panels, {duration: this.options.duration});

			

		var w = this.tabwrap._w - 20;				

		var pos = 0;

		this.tabwrap.panels.each(function(panel){

			panel.setStyle('left', pos);

			pos += w;

		});

	},



	move: function (curTab, newTab, skipAnim) {

		if(this.options.changeTransition != 'none' && skipAnim==false)

		{

			this.changeEffect.stop();

			var obj = {};

			var offset = newTab.offsetLeft.toInt();

			var i=0;

			this.tabwrap.panels.each(function(panel) {

				obj[i++] = {'left':[panel.offsetLeft.toInt(), panel.offsetLeft.toInt() - offset]};

			});

			this.changeEffect.start(obj);

		}

	}

});



var animMoveVir = new Class ({

	initialize: function(tabwrap) {

		this.options = tabwrap.options || {};

		this.tabwrap = tabwrap;

		this.changeEffect = new Fx.Elements(this.tabwrap.panels, {duration: this.options.duration});



		var top = this.tabwrap._H;		

		var pos = 0;

		this.tabwrap.panels.each(function(panel){

			panel.setStyle('top', pos);

			pos += top;

		});

	},



	move: function (curTab, newTab, skipAnim) {

		if(this.options.changeTransition != 'none' && skipAnim==false)

		{

			this.changeEffect.stop();

			var obj = {};

			var offset = newTab.offsetTop.toInt();

			var i=0;

			this.tabwrap.panels.each(function(panel) {

				obj[i++] = {'top':[panel.offsetTop.toInt(), panel.offsetTop.toInt() - offset]};

			});

			this.changeEffect.start(obj);

		}

	}

});