[Josh Combs]

I fixed the width to adjust to what my style width was set too by changing your code to

<table class="tborder" cellpadding="$stylevar[cellpadding]" cellspacing="$stylevar[cellspacing]" border="0" width="$stylevar[outertablewidth]" align="center">
<tr><td align="center"width="728" class="thead" colspan="2"><center>Advertisements</center></td></tr>
<tr><td class="alt1" colspan="2" ><span class="smallfont"><center><script type="text/javascript"><!--
google_ad_client = "Your googleadsense id";
google_ad_width = 728;
google_ad_height = 90;
google_ad_format = "728x90_as";
google_ad_type = "text";
google_ad_channel ="";
google_color_border = "FFFFFF";
google_color_bg = "FFFFFF";
google_color_link = "475D66";
google_color_url = "475D66";
google_color_text = "000000";
//--></script>
<center><script type="text/javascript"
  src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script></center></span></td></tr><td class="tfoot" align="center"></td></table><br>