[Zope] Sorting XML nodes?

[Jean Jordaan]

Hi Zopers (and Lex),

From the (excellent) 'How-To: XMLDocument Example' (Created 
by eukreign. Last modified on 2000/06/06) I get the following 
to display all the nodes of an XML document:

<dtml-in "contacts[0].getElementsByTagName('contact')">
    <tr>
        <td> <dtml-var "text_content('firstname')">
             <dtml-var "text_content('lastname')"></td>
        <td> <dtml-var "text_content('extension')"></td>
        <td> <a href="<dtml-var "absolute_url()">/edit">edit</a></td>
        <td> <a href="<dtml-var "absolute_url()">/delete">delete</a></td>
    </tr>
</dtml-in>

I want something along the lines of:
  <dtml-in "contacts[0].getElementsByTagName('contact')" 
           sort="lastname">

Is such a thing possible?

Thanks!
-- 
jean