Making the forum collapse work with PNG's

[ssslippy]

Here is the code im using for the collapse code

                   <a style="float:$stylevar[right]" href="#top" onclick="return toggle_collapse('forumbit_$forumid')"><img id="collapseimg_forumbit_$forumid" src="$stylevar[imgdir_button]/collapse_tcat{$collapseimg_forumid}.png" alt="" border="0" /></a>

Here is the tbody tag put in by default by vbulletin.

<tbody id="collapseobj_forumbit_$forumid" style="{$collapseobj_forumid}">