How to remove space after last post

[utw-Mephisto]

We add a gif bar below the the posts adding the code in red in the SHOWTHREAD template.

<div id="posts">$postbits<div id="lastpost"></div></div>

<!-- start content table -->
$spacer_open
<!-- / start content table -->

<!-- controls below postbits -->

<!-- bottom graphic line -->
<table width="100%" border="0" cellpadding="0" cellspacing="0">
      <tr>
        <td width="35" align="left" valign="top"><img src="$stylevar[imgdir_misc]/cat_small_left.gif" width="35" height="20" alt=" " border="0" /></td>
        <td  width="100%" style="background-image:url($stylevar[imgdir_misc]/cat_small_mid.gif)"><img src="$stylevar[imgdir_misc]/cat_small_mid.gif" width="100%" height="20" alt=" " border="0" /></td>
        <td width="35" align="right" valign="top"><img src="$stylevar[imgdir_misc]/cat_small_right.gif" width="35" height="20" alt=" " border="0" /></td>
      </tr>
  </table>
<!-- /bottom graphic line -->


<table cellpadding="0" cellspacing="0" border="0" width="100%">

But as you can see, it has a space below the last post :



(in case its important, we are using Postbit-Legacy)