AJAX not working after performing a posting preview

[ccplim]

I am currently using the Form Hack by Abe1 with AJAX dropdown mod by Deepdog009.

The dropdown works fine if I did a direct submit but if I perform a preview, the dropdown will stop working and I will not be able to change the value. I am suspecting that there might be some problem with the codings at the preview portion but I just couldn't figure out where are the actual codes (or hooks?) for the $preview/preview in the codes below.

<if condition="$preview">
<table class="tborder" cellpadding="$stylevar[cellpadding]" cellspacing="$stylevar[cellspacing]" border="0" width="100%" align="center">
<tr>
	<td class="tcat">
		Preview
	</td>
</tr>
<tr>
	<td class="alt2">
$preview
</td>
</tr>
</table>
</if>

Any bros here able to help on this?

Thanks in advance.