//validacio amb ajax de usuaris
//***********MANEJADOR DE EVENTS PER IE I MOZILLA*****************\\
	function addEvent(element, evType, fn, useCapture){
		//optimitzacio per compatibilitat amb IE i Mozilla
		if(element.addEventListener){
			element.addEventListener(evType, fn, useCapture);
			return true;
		}else if (element.attachEvent){
			var r = element.attachEvent('on'+evType, fn);
			return r;
		}else{
			element['on'+evType] = fn;
		}
	}
	
	//carrega inicial de listeners al window.load
	addEvent(window, 'load', addListeners, false);
	//conjunt de listeners i events que es carregaran on window.load
	function addListeners(e){
		//login
		var login_sub = document.getElementById('login_link');
		addEvent(login_sub, 'click', validar, false);
	}
	
	function validar(){
		 var finestra = window.open ("admin/","log","menubar=0,toolbar=0,location =0,resizable=0,scrollbars =1,width=550,height=450"); 
		finestra.moveTo(0,0);
		finestra.resizeTo(screen.availWidth,screen.availHeight);
	}