/*
 * Fabtabulous! Simple tabs using Prototype
 * http://tetlaw.id.au/view/blog/fabtabulous-simple-tabs-using-prototype/
 * Andrew Tetlaw
 * version 1.1 2006-05-06
 * http://creativecommons.org/licenses/by-sa/2.5/
 */
var Fabtabs = Class.create();

Fabtabs.prototype = {
	initialize : function(element) {
		this.element = $(element);
		var options = Object.extend({}, arguments[1] || {});
		this.menu = $A(this.element.getElementsByTagName('a'));
		this.getInitialTab();
		this.menu.each(this.setupTab.bind(this));
	},
	setupTab : function(elm) {
		Event.observe(elm,'click',this.activate.bindAsEventListener(this),false)
	},
	activate :  function(ev) {
		var elm = Event.findElement(ev, "a");
		Event.stop(ev);
	
		this.menu.without(elm).each(this.hide.bind(this));
            this.show(elm);   
	},
	hide : function(elm) {
		$(elm).up().removeClassName('selected');
        helm=$(this.tabID(elm));        
        
        if(helm!=null)
        {
            helm.removeClassName('active');
        }

	},
	show : function(elm) {
		$(elm).up().addClassName('selected');		        
        helm=$(this.tabID(elm));        
        if(helm!=null)
        {
            helm.addClassName('active');
        }else{
        //getInitialTab может вызвать переход по реальной ссылке
        if(!arguments[1])
        {
            window.location=elm.href
        }
        
        }

	},
	tabID : function(elm) {
		ht=elm.href.match(/#(\w.+)/);        
        if(ht!=null)        
        { return ht[1];
        }else{return;}
               	},
	getInitialTab : function() 
    {
	    selected=this.element.getElementsBySelector('li.selected');	
        if(selected[0]!=null){
        this.show(selected[0].down(),true);
        }
        
	}
}

Event.observe(window,'load',function(){ new Fabtabs('mainmenu'); },false);