Cant get ads to appear on part of my website.

I was able to get the ads to appear on most of my website but part of the website I can't get them to appear. For example at http://www.utahfirm.com/onlinestore/page_us_B00005NZ2K_256_252.html at the bottom of the page you will notice the letters "ab" between those letter I inserted the code for the ads to appear. I put the "ab" letters on the page because I wanted to see where the ad's should be appearing.

here is how the code is written

<td height="100%" bgcolor="#053699"><div align="center">
    
<br>
        <font size="-4">Powered by <a target=_blank href="http://www.utahfirm.com/">Amazon 
        Store Builder</a> </font> <br>
        Visit <a href="/">UTAHFIRM.COM</a> Homepage<br>
        <font size="-4">Copyright &copy; 2001-2004 <a href='mailto:onlinestore@utahfirm.com'><b>Esvon, 
        LLC</b></a> <a href="/realestateagent/index.htm"> <br>
        Salt Lake City Real Estate</a>, <a href="/">Utah Real 
        Estate</a>, <a href="/realestateagent/">Realty Executives Of Utah</a><br>
        <a href="/forsaleutah/category-410.html">Utah Used Cars</a>, <a href="/forsaleutah/category-328.html">Utah 
        Real Estate By Owner<br>
        </a> <a href="/forsaleutah/category-410.html">Salt Lake City Used Car</a> 
        , <a href="/forsaleutah/category-328.html">Salt Lake City Real Estate 
        By Owner</a>, <a href="/forsaleutah/">For Sale In Utah, LLC</a><br>
        <a href="/">Utah Mortgage</a>, <a href="/mortgage/programs.htm">Salt 
        Lake City Refinance</a>,<a href="/mortgage/rateindex.htm">Mortgage Interest 
        Rates</a> <a href="/mortgage/">G &amp; G Residential Mortgage</a></font></div></td>
  </tr>
  <tr> 
    <td height="100%" bgcolor="#053699"><div align="center">
    
<br>
        <tr> 
          <td height="100%" bgcolor="#053699"><div align="center">a<?php
	ini_set ("include_path", ini_get ("include_path") . ':../:../../:../../../:../../../../');
	include ('ad_network.php');
	echo $ad_network[0];
?>b<br>
        </tr>

Code (markup):

I hope someone can explain to me why the ads are not appearing even though I have the code inserted.

Thanks in advance.

 

Are you using perl to generate this code? The reason I ask is by looking at your url you are most likely using Amazon's Web Services.

 

I don't exactly what it is using I'm demoing the software from ESVON http://www.esvon.com/pg/products/p_amazon/