Help Adding Javascript for Adsense To Header Area

My blog is Simply Elizabeth. I want to position a 728x90 Adsense ad in the space next to the logo and blog title.

I followed these steps that Flynn posted in a previous thread:

%pages
<table>
<tr>
<td>%logo</td>
<td>Google code</td>
</tr>
</table>
%image

This is the exact code:

%pages
<table>
<tr>
<td>%logo</td>
<td><script type="text/javascript"><!--
google_ad_client = "ca-pub-5906324363998740";
/* Simply Elizabeth */
google_ad_slot = "2116562860";
google_ad_width = 728;
google_ad_height = 90;
//-->
</script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script></td>
</tr>
</table>
%image

After clicking save, no ad or placeholder appeared in the header.

I created a 728x90 colored rectangle as a sample and got that to work, you can see it in the header now. that code is:

%pages
<table>
<tr>
<td>%logo</td>
<td><a href="http://s152.photobucket.com/albums/s197/table4five/?action=view&amp;current=728x90SampleAd.png" target="_blank"><img src="http://i152.photobucket.com/albums/s197/table4five/728x90SampleAd.png" border="0" alt="Photobucket"></a></td>
</tr>
</table>
%image

My question is, will Javascript work in the Styling Header Area? Did I miss something? Any suggestions would be appreciated!

-Elizabeth