Formating adicional data

[wxdqz]

I'm working for a way to show xml data in a HTML page with XML DOM but I have a question: how to show/not show the bold elements in next code if the text in a element exists or not??

<table border="0">
<tr>
<td><img src=http://www.webdeveloper.com/forum/archive/index.php/"images/mark01.gif" width="10" height="9"></td>
<td class="txtDest02"><span id="dia"></span><span id="mes"></span><span id="ano"></span> - <span id="titulo"></span></td>
</tr>
<tr>
<td>&nbsp;</td>
<td>
<p class="pBrd">
<span id="amostra"></span><a id="link">...Mais</a>
</p>
</td>
</tr>
<tr>
<td>&nbsp;</td>
<td>&nbsp;</td>
</tr>
</table>