Centering Conent in Firefox vs Internet Explorer

[TheAllusionist]

There is probably a much better way to do this, what I am trying to do is place GAB banners centered under Navbar (actually under gallery block) on my forum home. I can do this but I can either get it centered in Firefox and not in IE or centered in IE and not Firefox. It would be nice to have it centered in both.

Centered in IE:

<!-- START OF SPONSOR BANNER TABLE -->
<table width="100%" align="center">
<tr>
<td>$GAB_ads[1]</td>
</tr>
</table>
<!-- END OF SPONSOR BANNER TABLE -->


Centered in Firefox:

<!-- START OF GAB BANNER TABLE -->
<center>
<table width="100%" align="center" border="0" cellspacing="0" cellpadding="0">
<tr>
<center>
$GAB_ads[1]
</center>
</tr>
</center>
<!-- END OF GAB BANNER TABLE -->

http://www.3dallusions.com/forums/index.php

I am wondering of any of you with more knowledge may have a centering syntax that works in both?