if (parent.document.referrer){
	// get referer of parent frame if a framed page
	referer = parent.document.referrer;
}
else
{
	// get page referer
	referer = document.referrer;
}

// write div tags and call tracker.php
document.write('<div id="yt-tracker">');
document.write('<p align="center">');
document.write('<a target="_blank" href="http://youtoplist.com/join.php?site=' + site + '"><img border="0" src="http://youtoplist.com/tracker.php?referer=' + referer + '&site=' + site + '" alt="YouToplist"></a>');
document.write('</p>');
document.write('</div>');