function callChat()
{
	var tref, ref_raw, ref;
	tref = document.referrer;
	urlparts = tref.split('://');
	ref = urlparts[1];
	if(ref)
	{
		ref=ref.replace (/www./,"");
	}	
	window.open("livesupport/main.php?ref="+ref,'','width=520,height=430,scrollbars=0');
}