cookieNow = document.cookie;

dmn = document.domain;
dmn = dmn.replace("www.","");
baseref = new String(document.referrer);
if ((baseref.indexOf("http://www." + dmn) == -1) && (baseref.indexOf("http://" + dmn) == -1) && (baseref.indexOf("https://www." + dmn) == -1) && (baseref.indexOf("https://" + dmn) == -1) && (baseref != '')){
	document.cookie = "referrer=" + escape(baseref);
}