URL wrapping (off-topic)

Is there any way to force URLs in the bibliography to wrap in the 
printed output, where the URL extends past the end of a line?  Currently 
URLs will only wrap if there is a - character in them, they won't wrap 
on / characters, which sometimes means they push through the right margin.

I tried to do that by using the TeX 'url' package.  This requires the 
URLs to be <ulink>s.  However if I turn my URLs in the bibliography into 
<ulinks>, I get errors because the schema does not allow them there.

TIA

-- 
JEREMY MALCOLM <[email protected]> - lawyer, IT consultant and actor.
Internet and Open Source specialist. Web site: http://www.malcolm.id.au.
Disclaimer: http://www.terminus.net.au/disclaimer.html. GPG key: finger.