<td class="tmenu" width="6"> <img border="0" src="images/dot.gif" width="1" height="1"> </td>
(I'm not sure why this works, but it does. Something to do with how IE and Netscape differ on the handling of "empty" cells.)
Is this at all problematic for search engine rankings? The reason I ask is that, as many of you know, graphics like this are embedded in a lot of spam e-mail and used by sites for tracking visitors. Hence, the use of such small graphics might be scene as potentially misleading, and search engines could penalize sites for using them. I don't know that they do, but don't want to find out the hard way.