Ad not showing up

Why doesn't my advert show up, is the code just for HTML

&MemID<!-- Begin Banner Exchange Code Page 1 --->
<SCRIPT LANGUAGE="JAVASCRIPT">
<!--
var browName = navigator.appName;
var browDateTime = (new Date()).getTime();
var browVersion = parseInt(navigator.appVersion);
var ua=navigator.userAgent.toLowerCase();
var adcode='';
if (browName=='Netscape'){
if ((browVersion>=4)&&(ua.indexOf("mac")==-1))
{ document.write('<S'+'CRIPT src="http://www.myfitbanner.com/linkxpro/linkxpro.asp?Task=Get&Browser=NETSCAPE4=565&SzID=1 ">');
document.write('</'+'scr'+'ipt>');}
else if (browVersion>=3)
{ document.write('<A HREF="http://www.myfitbanner.com/linkxpro/linkxpro.asp?Task=Click&Mode=HTML&MemID=565&SzID=1 &PageID=23423&RandomNumber=' + browDateTime + '" target="_new"><IMG SRC="http://www.myfitbanner.com/linkxpro/linkxpro.asp?Task=Get&Mode=HTML&MemID=565&SzID=1&P ageID=23423&RandomNumber=' + browDateTime + '" width="468" height="60" border="0"></A>'); } }
if (browName=='Microsoft Internet Explorer')
{ document.write('<ifr'+'ame src="http://www.myfitbanner.com/linkxpro/linkxpro.asp?Task=Get&MemID=565&SzID=1" width=468 height=60 Marginwidth=0 Marginheight=0 Hspace=0 Vspace=0 Frameborder=0 Scrolling=No></ifr'+'ame>'); }
// -->
</script>
<noscript>
<a href="http://www.myfitbanner.com/linkxpro/linkxpro.asp?Task=Click&Mode=HTML&MemID=565&SzID=1 &PageID=23423" target="_new">
<img src="http://www.myfitbanner.com/linkxpro/linkxpro.asp?Task=Get&Mode=HTML&MemID=565&SzID=1&P ageID=23423" width="468" height="60" border="0"></a>
</noscript>
<a href="http://www.myfitbanner.com"><img src="http://www.myfitbanner.com/images/under_banner.gif" height="12" width="468" alt="myfitbanner.com" border="0"></a><!-- End Banner Exchange Code for Page 1 --->

Hello,

please let me know an example URL where this banner code is inserted.