> I'll try to write you a little script in order to show precisely the problem
> (whithout any assuptions).
Great. Being able to easily reproduce always helps a lot.
> But, waiting for it, can you help me, please,
> whith the DOMUtilities.parseXML method? I'm not very comfortable using this
> method (and the correct parameters to feed it), and the Batik Javadoc
> doesn't help me very much.
Maybe the ECMAScript version documentation  will help...?
Have you tried crawling through the Batik source code  and/or Web
for sample usages of the method? ;-)