docbook: export to pdf, exclude a special tag

Hello,

I'm relativly new to XML and Fo and so on... (I've read some postings in this mailinglist, but I wasn't so sucessful...)

I have a docbook-file (4.4) created by the wiki-software moinmoin

Then I want to export this file into pdf by

an@pc:~/docbook-xsl-1.76.0$ fop -xml ../pros.xml -xsl param.xsl -pdf pros.pdf


in the xml-file there are tags, which I don't want to see in the pdf-file

<revhistory><revision><revnumber>12</revnumber><date>2010-09-11 07:06:18</date><authorinitials>02333</authorinitials></revision><revision><revnumber>11</revnumber><date>2010-07-26 17:48:49</date><authorinitials>0523421-</authorinitials>

...
</revhistory>

how can I exclude this element <revhistory> and so everything which is between the start and the endtag?

Thanks

Andreas

P.S:

params.xsl

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version='1.0'>
<xsl:import href="fo/docbook.xsl"/>
<xsl:param name="paper.type">A4</xsl:param>
</xsl:stylesheet>

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