>well I know that it is not possible through XSLT, and that's what...i want
>to do it through Xalan

Xalan is an XSLT processor. In that mode, the answer is "no". Even with
extension functions, this would be *FAR* too fragile and Will Not Be
Supported.

Xalan also allows you to call its XPath engine. You could use that to
invent your own non-XSLT transformation processor which back-patches the
source document. However, PLEASE NOTE that Xalan does not promise to give
correct results if you alter the source while it is being searched; you
*MUST*  run each XPath query to completion before attempting any
alterations.

(Caveat: I'm thinking about this from the Xalan-J point of view. I presume,
but am not 110% certain, that the same answers will apply to Xalan-C.)


______________________________________
Joe Kesselman, IBM Next-Generation Web Technologies: XML, XSL and more.
"The world changed profoundly and unpredictably the day Tim Berners Lee
got bitten by a radioactive spider." -- Rafe Culpin, in r.m.filk


 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list