Filtering on attributes

Hi all,

Following style sheet merges all the documents very well.  

Is it possible to filter the data on attribute value before displaying?
For example, it displays the data from those nodes where 'scope of
dessimination' is EFSA. 

Any suggestion?

/s

------------------------------------------------------------------------
--------------------------------

Style sheet
-----------

 <xsl:template match="/">
  <xsl:for-each select="document('multiple_input1.xml')/someURIs/file">
   <xsl:variable name="copy_current_file" select="document(string(.))"/>
   <xsl:value-of select="$copy_current_file"/>
   <br/><br/>
  </xsl:for-each>
 </xsl:template>
</xsl:stylesheet>

multiple_input1.xml
------

<someURIs>
  <file>file1.xml</file>
  <file>file2.xml</file>
  <file>file3.xml</file>
</someURIs>

file1.xml
------

<?xml version="1.0" encoding="ISO-8859-1"?>

<livelink applanguage='USA' appversion='9.1.0' dtdversion='1.2'>
  <llnode created='2003-10-20T19:21:40' createdby='158210'
createdbyname='Sheikh, Sajjad' id='171944'
modified='2003-10-21T09:41:10' name='Question Folder' objname='Folder'
objtype='0' ownedby='158210' ownedbyname='Sheikh, Sajjad'
parentid='3866' size='4'>
    <category defid='171842' name='Question Numbers' versionid='1'>
      <attributeset attid='1' name='Question Numbers'>
        <attribute attid='2' name='Question Number' type='-1'/>
      </attributeset>
    </category>
    <llnode created='2003-10-21T09:41:10' createdby='158210'
createdbyname='Sheikh, Sajjad' description='This is about environmental
safety NK603.' id='171726' mimetype='application/msword'
modified='2003-10-21T09:41:10' name='name3' 
objname='Document' objtype='144' ownedby='158210'
ownedbyname='Sheikh, Sajjad' parentid='171944' size='36352'
versionnum='1'>
      <category defid='37402' name='Security Data (EFSA)' versionid='3'>
        <attributeset attid='1' name='Security Data (EFSA)'>
          <attribute attid='2' name='Classification Level'
type='10'>Confidential</attribute>
          <attribute attid='3' name='Scope of Dissemination'
type='10'>Panel</attribute>
        </attributeset>
      </category>
      <category defid='171842' name='Question Numbers' versionid='1'>
        <attributeset attid='1' name='Question Numbers'>
          <attribute attid='2' name='Question Number'
type='-1'>EFSA-Q-2003-003</attribute>
        </attributeset>
      </category>
    </llnode>
  </llnode>
</livelink>

file2.xml
-----

<?xml version="1.0" encoding="ISO-8859-1"?>

<livelink applanguage='USA' appversion='9.1.0' dtdversion='1.2'>
  <llnode created='2003-10-20T19:21:40' createdby='158210'
createdbyname='Sheikh, Sajjad' id='171944'
modified='2003-10-21T09:41:10' name='Question Folder' objname='Folder'
objtype='0' ownedby='158210' ownedbyname='Sheikh, Sajjad'
parentid='3866' size='4'>
    <category defid='171842' name='Question Numbers' versionid='1'>
      <attributeset attid='1' name='Question Numbers'>
        <attribute attid='2' name='Question Number' type='-1'/>
      </attributeset>
    </category>
    <llnode created='2003-10-20T19:27:36' createdby='158210'
createdbyname='Sheikh, Sajjad' id='171842'
modified='2003-10-20T19:29:45' name='Question Numbers'
objname='Category' objtype='131' ownedby='158210' ownedbyname='Sheikh,
Sajjad' parentid='171944' size='419' versionnum='1'>
    </llnode>
    <llnode created='2003-10-20T19:31:39' createdby='158210'
createdbyname='Sheikh, Sajjad' id='171945' mimetype='application/pdf'
modified='2003-10-21T09:34:32' name='name1'
objname='Document' objtype='144' ownedby='158210' ownedbyname='Sheikh,
Sajjad' parentid='171944' size='408564' versionnum='1'>
      <category defid='37402' name='Security Data (EFSA)' versionid='3'>
        <attributeset attid='1' name='Security Data (EFSA)'>
          <attribute attid='2' name='Classification Level'
type='10'>Unrestricted</attribute>
          <attribute attid='3' name='Scope of Dissemination'
type='10'>World (no limitation)</attribute>
        </attributeset>
      </category>
      <category defid='171842' name='Question Numbers' versionid='1'>
        <attributeset attid='1' name='Question Numbers'>
          <attribute attid='2' name='Question Number'
type='-1'>EFSA-Q-2003-001</attribute>
        </attributeset>
      </category>
    </llnode>
  </llnode>
</livelink>

file3.xml
------

<?xml version="1.0" encoding="ISO-8859-1"?>

<livelink applanguage='USA' appversion='9.1.0' dtdversion='1.2'>
  <llnode created='2003-10-20T19:21:40' createdby='158210'
createdbyname='Sheikh, Sajjad' id='171944'
modified='2003-10-21T09:41:10' name='Question Folder' objname='Folder'
objtype='0' ownedby='158210' ownedbyname='Sheikh, Sajjad'
parentid='3866' size='4'>
    <category defid='171842' name='Question Numbers' versionid='1'>
      <attributeset attid='1' name='Question Numbers'>
        <attribute attid='2' name='Question Number' type='-1'/>
      </attributeset>
    </category>
    <llnode created='2003-10-20T19:27:36' createdby='158210'
createdbyname='Sheikh, Sajjad' id='171842'
modified='2003-10-20T19:29:45' name='Question Numbers'
objname='Category' objtype='131' ownedby='158210' ownedbyname='Sheikh,
Sajjad' parentid='171944' size='419' versionnum='1'>
    </llnode>
    <llnode created='2003-10-21T09:39:18' createdby='158210'
createdbyname='Sheikh, Sajjad' description='This is about food safety.'
id='171952' mimetype='application/vnd.ms-powerpoint'
modified='2003-10-21T09:39:18' name='name2' 
objname='Document' objtype='144' ownedby='158210'
ownedbyname='Sheikh, Sajjad' parentid='171944' size='241664'
versionnum='1'>
      <category defid='37402' name='Security Data (EFSA)' versionid='3'>
        <attributeset attid='1' name='Security Data (EFSA)'>
          <attribute attid='2' name='Classification Level'
type='10'>Restricted</attribute>
          <attribute attid='3' name='Scope of Dissemination'
type='10'>EFSA</attribute>
        </attributeset>
      </category>
      <category defid='171842' name='Question Numbers' versionid='1'>
        <attributeset attid='1' name='Question Numbers'>
          <attribute attid='2' name='Question Number'
type='-1'>EFSA-Q-2003-002</attribute>
        </attributeset>
      </category>
    </llnode>
  </llnode>
</livelink>


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[Edited by list owner.]