I'm running: UBB.classic™ 6.7.3

I would like to add Google AdSense to the Forum Introduction, but get errors.
Any idea what UBB doesn't like?

Here's the code:

Code
<script type="text/javascript"><!--
google_ad_client = "pub-7565496474848949";
google_ad_width = 728;
google_ad_height = 90;
google_ad_format = "728x90_as";
google_ad_type = "text_image";
google_ad_channel ="";
//--></script>
<script type="text/javascript"
  src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>

Member since November 2004
Gold Member since Feb 2008