Basically, there are a whole bunch of these type constructs which are small tips...
Code:
<div class="note"><table border="0" summary="Note">
<tr>
<td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="images/note.gif"></td>
<th align="left">Note</th>
</tr>
<tr><td align="left" valign="top"><p>
When specifying multiple parents for a Role, keep in mind that the last parent
listed is the first one searched for rules applicable to an authorization query.
</p></td></tr>
</table></div>
If you remove the rowspan="2" then html2lrf works fine.
I will email you the entire file separately.