[html, css, javascript] td width acting like its not there!

[Lea Verou]

I'll talk about the "stripped down to basic" problem, and not my actual one that has extra code that might tire you. If I solve this one, I'll solve the actual one I'm having.

So, this code:

<table style="display:block" border="1" width="100%">
<tr><td width="100%">test</td></tr>
</table>

produces this result:
Attachment 66541

Notice how the td takes the size of the content and doesn't stretch to the whole table as it should?
This only happens in firefox...