Mozilla problem (ugh)

I hate Mozilla with the fire of a thousand suns.

If you bring up my site in IE, Maxthon or Opera, my search box formats correctly. I have no breaks between the box and the submit button:

IE:


Opera:



And now, FF, which is for some reason putting a break between the box and the button, even though the table cell in question is 250px wide, and the search bar is half of that.



Here's the code:

<!-- Search Box -->
<td style="background: #333333 url(http://www.sevenstring.org/forum/images/misc/snav_gradient.jpg);" valign="middle" class="alt1" width="250"><form action="http://www.sevenstring.org/forum/search.php" method="post">
<input type="text" style="width:100px;" class="bginput" name="query"/>&nbsp;<input style="font: bold 10px Arial" type="submit" class="button" value="Search" /><input type="hidden" name="s" value="" />
<input type="hidden" name="do" value="process" />
<input type="hidden" name="showposts" value="0" />
<input type="hidden" name="quicksearch" value="1" />
</form></td>
<!-- /Search -->

What am I missing here?