Collapse feature for (New Look for Code Modifications) wont work ?

[Logikos]

Template Code: postbit or w/e

<table class="tborder" cellpadding="6" cellspacing="1" border="0" width="100%" align="center">
<tbody>
        <tr>
                <td class="tcat" colspan="2">
                        <a style="float:$stylevar[right]" href="#top" onclick="return toggle_collapse('groupbit_$post[postid]')"><img id="collapseimg_groupbit_$post[postid]" src="$stylevar[imgdir_button]/collapse_tcat{$collapseimg_groupid}.gif" alt="" border="0" /></a></div>
                        Test
                </td>
        </tr>
</tbody>
<tbody id="collapseobj_groupbit_$post[postid]" style="$collapseobj_groupid">
        <tr>
                <td class="alt1">Test</td>
        </tr>
</tbody>
</table>

Hook Location : postbit_display_complete

PHP Code:

// collapse/expand fields in a group
global $vbcollapse;

$groupid = $post['postid'];
$collapseobj_groupid =& $vbcollapse["collapseobj_groupbit_$groupid"];
$collapseimg_groupid =& $vbcollapse["collapseimg_groupbit_$groupid"];
$show['collapsebutton'] = true;