function showad(zone)
{
	if (!document.phpAds_used)
		document.phpAds_used = ',';
	
	phpAds_random = new String (Math.random()); phpAds_random = phpAds_random.substring(2,11);
	
	document.write ("<" + "script language='JavaScript' type='text/javascript' src='");
	document.write ("http://www.shanghai-ads.com/shphpads/adjs.php?n=" + phpAds_random);
	document.write ("&amp;what=zone:" + zone);
	document.write ("&amp;exclude=" + document.phpAds_used);
	
	if (document.referrer)
		document.write ("&amp;referer=" + escape(document.referrer));
	
  	document.write ("'><" + "/script>");
}