var mootabs = new Class({
	
	initialize: function(element, options) {
		this.options = Object.extend({
			width:				'300px',
			height:				'200px',
			changeTransition:	Fx.Transitions.Bounce.easeOut,
			duration:			1000,
			mouseOverClass:		'active',
			activateOnLoad:		'first',
			useAjax: 			false,
			ajaxUrl: 			'',
			ajaxOptions: 		{method:'get'},
			ajaxLoadingText: 	'Loading...'
		}, options || {});
		
		this.el = $(element);
		this.elid = element;
		//this.options.height
		
		this.el.setStyles({
			height: 'auto',
			width: this.options.width
		});
		
		
		
		this.titles = $$('#' + this.elid + ' ul.mootabs_title li');
		this.panelHeight = this.el.getSize().size.y - (this.titles[0].getSize().size.y + 4);
		this.panels = $$('#' + this.elid + ' .mootabs_panel');
		//alert(this.panelHeight);
		this.panels.setStyles({
			height: 'auto'
		});
		
				
		this.titles.each(function(item) {
			item.addEvent('click', function(){
					item.removeClass(this.options.mouseOverClass);
					createCookie("tabClicked",item.title,"1");
					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 != null ){
			if(this.options.activateOnLoad == 'first'){
				this.activate(this.titles[0], true);
			}else{
				this.activate(this.options.activateOnLoad, true);	
			}
		}else{			
			//alert(this.options.activateOnLoad);
			createCookie("tabClicked","Tab1","1");
			this.activate(this.titles[0], 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')
		{
			var newTab = tab.getProperty('title');
			this.panels.removeClass('active');
			
			this.activePanel = this.panels.filterById(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.setHTML(this.options.ajaxLoadingText);
		var newOptions = {update: this.activePanel.getProperty('id')};
		this.options.ajaxOptions = Object.extend(this.options.ajaxOptions, newOptions || {});
		var tabRequest = new Ajax(this.options.ajaxUrl + '?tab=' + this.activeTitle.getProperty('title'), this.options.ajaxOptions);
		tabRequest.request();
	},
	
	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.setHTML(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').filterByAttribute('title', '=', title)[0].remove();
		
		$$('#' + this.elid + ' .mootabs_panel').filterById(title)[0].remove();
	},
	
	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);
	}
});


function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  //ASP cookie (=encodeURI è già eseguito da params_createCookie)? Cerco un quarto parametro..
  if (!(arguments.length==4 && arguments[3]==true)) {
  	name = encodeURIComponent(name)
  	value= encodeURIComponent(value)
	}
	//Gestisce caratteri speciali per ASP (che altrimenti li converte!)
	name=name.replace(/_/g,'%5F');
	name=name.replace(/\//g,'%2F');
	name=name.replace(/\./g,'%2E');
	document.cookie = name+"="+value+expires+"; path=/";
}

//LEGGI UN COOKIE
function readCookie(name) {
	//Gestisce gli underscore per ASP (che altrimenti li converte!)
 	var nameEQ = name.replace(/_/g,'%5F');
  nameEQ=nameEQ.replace(/\//g,'%2F');
  nameEQ=nameEQ.replace(/\./g,'%2E');
  nameEQ=nameEQ+ "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ')
    	c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) {
    	return c.substring(nameEQ.length,c.length);}
  }
  return null;
}

//CANCELLA UN COOKIE
function eraseCookie(name) {
	createCookie(name,"",-1);
}