Preserving links in output files

Hello,
I have just accomplished "first steps" in XSL
and have the following question:
I would like to produce multiple HTML files
from a single XML instance (e.g., the XML instance
is a "book", each "chapter" of which needs to
become a separate HTML page).
James Clark's xt:document extension to XT seems
to give me the chopping mechanism, but how to
preserve the ID/IDREF links across the resulting
HTML pages?

My thinking is: if I use an attribute
on "chapter" to form the HTML page name,
how can I put the resulting page name in front
of IDREF values (in other "chapter"s) that point 
to IDs within that chapter?
Can anyone put me on the right track (if there is one)?

Thanks and regards,
Dr. Marc Beckers
Documentation Consultant
Software AG
Uhlandstraße 12
D-64297 Darmstadt
Phone +49-6151-92-1322
Fax              -1612
E-Mail Marc.Beckers@xxxxxxxxxxxxxx
Internet www.softwareag.com


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