function $_(id)
{
	return document.getElementById(id);
}
function addEvent(obj, ev, func){
	if (window.addEventListener){
		obj.addEventListener(ev.replace(/^on/i,''), func, false);
	}
	if (window.attachEvent){
		obj.attachEvent(ev,func);
	}
}
var live_chat = $_('live_chat');
if(live_chat)
{
	addEvent(live_chat, 'onclick', 
		function(n)
		{
			window.open('/live-assistance.html','','status=no, toolbar=no, location=no, menubar=no, directories=no, resizable=no, scrollbars=no, titlebar=no, width=390,height=230');
		}
	);
}