function showBanner(identifier) {
	var zone = 0;
	switch(identifier) {
		case 468:
			zone = 1;
			break;
		case 600:
			zone = 3;
			break;
		case 336:
			zone = 8;
			break;
		case 728:
			zone = 11;
			break;
		case 300:
			zone = 12;
			break;
		case '300top':
			zone = 16;
			break;
	}
	
	if(zone > 0) {
		if (!document.phpAds_used) document.phpAds_used = ',';
		phpAds_random = new String (Math.random()); phpAds_random = phpAds_random.substring(2,11);
		
		document.write ("<" + "script type='text/javascript' src='");
		document.write ("http://ads.xboxworld.nl/adjs.php?n=" + phpAds_random);
		document.write ("&amp;what=zone:" + zone + "&amp;target=_blank");
		document.write ("&amp;exclude=" + document.phpAds_used);
		if (document.referrer)
		   document.write ("&amp;referer=" + escape(document.referrer));
		document.write ("'><" + "/script>");
	}
}