php广告加载类用法实例(4)

<?php
$zoneid = isset($_GET['zoneid'])? intval($_GET['zoneid']) : 0; 
if($zoneid){ 
?> 
var zoneid = <?=$zoneid ?>; 
var m3_u = (location.protocol=='https:'?'https://ads.nmg.com.hk/www/delivery/ajs.php':'http://ads.nmg.com.hk/www/delivery/ajs.php'); 
var m3_r = Math.floor(Math.random()*99999999999); 
if (!document.MAX_used) document.MAX_used = ','; 
document.write ("<scr"+"ipt type='text/javascript' src='"+m3_u); 
document.write ("?zoneid=" + zoneid); 
document.write ('&cb=' + m3_r); 
if (document.MAX_used != ',') document.write ("&exclude=" + document.MAX_used); 
document.write (document.charset ? '&charset='+document.charset : (document.characterSet ? '&charset='+document.characterSet : '')); 
document.write ("&loc=" + escape(window.location)); 
if (document.referrer) document.write ("&referer=" + escape(document.referrer)); 
if (document.context) document.write ("&context=" + escape(document.context)); 
if (document.mmm_fo) document.write ("&mmm_fo=1"); 
document.write ("'><\/scr"+"ipt>"); 
<? } ?>