Write to XML file using XSL

Hi Guys,
       Does anyone know how to write to an xml file using the XSL stylesheet that it calls??  In other words, I have and xsl which produces textboxes in several places in the xml document.  The value a user enters in to these text boxes has to go in the xml file and add to or update the file.  Does any one know how i could do this.  Is there a javascript function or something that I could use to get this functionality??  Please let me know soon.  any help would be greatly appreciated.  Thanks.

Jaimin.


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