var refr=escape(document.referrer); /* get the http referer and encode it */
var dom=location.hostname; /* get the host domain */
var stURL="http://au.track.decideinteractive.com/n/19856/19858/www.seofever.com/d6c403510025030000000006000000000355968c0000000000000000000000000000000100/i/c?0&1pixgif&referer="
+ refr;
if (refr && refr.search(dom) == -1) /* if the referrer is external preload the image request */
{
imageTR = new Image();
imageTR.src = stURL;
}