[xsl] searching the xml

["Earl Spencer" <eapencer74@xxxxxxxxxxx>]

Hi folks,
         I have a search problem

xml
---
<ROOT>
<employee group="1">
<wing>Management</wing>
<emp>john</emp>
<emp>arnold</emp>
</employee>
<employee group="2">
<wing>Marketing</wing>
<emp>kathy</emp>
<emp>robert</emp>
</employee>
<employee group="3">
<wing>Production</wing>
<emp>jones</emp>
<emp>scot</emp>
</employee>
</ROOT>

and now my problem is if i pass a stylesheet parameter like this
scott,john

then my resulting xml file should be
<ROOT>
<employee group="1">
<wing>Management</wing>
<emp>john</emp>
</employee>
<employee group="3">
<wing>Production</wing>
<emp>scot</emp>
</employee>
</ROOT>

can anybody suggest me the best way to do this......
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