DOCBOOK-APPS: Attribute `id' in <mediaobject>

I'm using  Norm's stylesheets  for output  in HTML,  from a  DocBook XML
document  processed by  Resin, an  XSL  aware Java  server available  at
http://www.caucho.com/. I want to use the  `id' attribute of output HTML
elements for customizing the styles in a CSS.

<mediaobject id='man'>
<imageobject id='man'>
        <imagedata fileref="/jpg/10102198.jpg" id='man'/>
</imageobject>
</mediaobject>

None  of the  `id'  attributes  are output  in  the  resulting <div>  or
<img>. What can I do?
-- 
Jean-Baptiste Quenot
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May 1, 2001 - May 21, 2001: 1756 visits