I'm terrible at talking html without doing it. I'm a trial and error htmler. But, right now you have:
Code:
<table><tr><td>
<div>banner</div>
<div>navbar and content</div>
<div>footer</div>
</td></tr></table>
I might try:
Code:
<table><tr bgcolor="matching-blue-banner-color"><td>
<div>banner</div>
</td></tr>
<tr><td>
<div>navbar and content</div>
<div>footer</div>
</td></tr></table>