banner plugin problem

I'm trying to ad a html banner through the plugin but is not showing..
the code is:

<script type='text/javascript'><!--//<![CDATA[
var m3_u = (location.protocol=='https:'?'https://www.xblasterads.com/www/delivery/ajs.php':'http://www.xblasterads.com/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=1812");
document.write ('&amp;cb=' + m3_r);
if (document.MAX_used != ',') document.write ("&amp;exclude=" + document.MAX_used);
document.write (document.charset ? '&amp;charset='+document.charset : (document.characterSet ? '&amp;charset='+document.characterSet : ''));
document.write ("&amp;loc=" + escape(window.location));
if (document.referrer) document.write ("&amp;referer=" + escape(document.referrer));
if (document.context) document.write ("&context=" + escape(document.context));
if (document.mmm_fo) document.write ("&amp;mmm_fo=1");
document.write ("'><\/scr"+"ipt>");
//]]>--></script><noscript><a href='http://www.xblasterads.com/www/delivery/ck.php?n=a728d452&amp;cb=INSERT_RANDOM_NUMBER_HERE ' target='_blank'><img src='http://www.xblasterads.com/www/delivery/avw.php?zoneid=1812&amp;cb=INSERT_RANDOM_NUMBER_HE RE&amp;n=a728d452' border='0' alt='' /></a></noscript>



What is the problem?

sorry the problem was not the plugin but the external server