Array.prototype.filterById = function(TheId) {
    var filterById = function(El) {
	var res = (El.getAttribute('id') === TheId);
	return res;
    };
    var Result = this.filter(filterById);
    return Result;
}

var mootabs = new Class({
	
	initialize: function(element, options) {
	    this.options = $extend({
		    width:			'250px',
		    height:			'250px',
 		    changeTransition:	        Fx.Transitions.Bounce.easeOut,
// 		    changeTransition:	        'none',
		    duration:			1000,
		    mouseOverClass:		'active',
		    activateOnLoad:		'first',
		    useAjax: 			false,
		    ajaxUrl: 			'',
		    ajaxOptions: 		{method:'get'},
		    ajaxLoadingText: 	        'Loading...'
		}, options || {});
		
	    this.el = $(element);
	    this.elid = element;
		
	    this.el.setStyles({
		    height: this.options.height,
			width: this.options.width
			});
		
	    var TilesSelector = '#' + this.elid + ' .mootabs_tab';
	    this.titles = $$(TilesSelector);
	    this.panelHeight = this.el.getSize().y - (this.titles[0].getSize().y + 4);
	    var PanelsSelector  = '#' + this.elid + ' .mootabs_panel';
	    this.panels = $$(PanelsSelector);
		
	    this.panels.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 + ' .mootabs_tab').filterByAttribute('title', '=', tab)[0];
		tab = myTab;
	    }
	    
	    if($type(tab) == 'element') {
		this.panels.filterById = function(el) {
		    return this.filter('#'+el);
		};
		var newTab = tab.getProperty('tab');
		this.panels.removeClass('active');
		
		var ppp = this.panels.filterById(newTab);
		this.activePanel = ppp[0];
		
		this.activePanel.addClass('active');
		
		if(this.options.changeTransition != 'none' && skipAnim==false) {
		    var El = this.panels.filterById(newTab)[0];
		    El.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) {
	    alert("addTab nie przerobiony z ul li na div");
	    //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){
	    alert("removeTab nie przerobiony z ul li na div");
	    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);
	}
    });