Lookup without document('') function

I'm currently using an XSLT parser that unfortunately doesn't support
the document() function (it's still alpha software), ideally I'd switch
to one of the other full feature ones, but don't know of an XSLT parser
that is fully functional that is supported in Active State Perl.

Anyway, here is the XSLT that I know works if I the parser supported
the document() function, what I need is work around that doesn't use
the document() function.  If I can get the data into a Nodeset, I'm
set, just can't figure out how to get the lookup data there.

XSLT:

<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:lookup="urn:some.urn" exclude-result-prefixes="lookup">
	<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
	<lookup:table>
		<BMTABLE>CMSCASE</BMTABLE>
		<BMTABLE>CLAIMANT</BMTABLE>
		<BMTABLE>CLMREP</BMTABLE>
		<BMTABLE>CMSGROUP</BMTABLE>
		<BMTABLE>EMPLOYER</BMTABLE>
		<BMTABLE>EMPREP</BMTABLE>
		<BMTABLE>HEARING</BMTABLE>
		<BMTABLE>HEAROFFCR</BMTABLE>
		<BMTABLE>OTHERCPT</BMTABLE>
		<BMTABLE>SUBPOENA</BMTABLE>
	</lookup:table>
	<xsl:variable name="globalTableNames"
select="document('')/*/lookup:table/*"/>

	<xsl:template match="DGS">
	<xsl:element name="DGS">
	    <xsl:apply-templates select="BOOKMARKS" />
      </xsl:element>
    	</xsl:template>
    	
    	<xsl:template match="BOOKMARKS">
       <xsl:element name="BOOKMARKS">
            <xsl:for-each select="$globalTableNames">
                 <xsl:element name="TABLE">
			  <xsl:attribute name="tableid"><xsl:value-of
select="."/></xsl:attribute>
			  <xsl:variable name="tablename" select="."/>
     	               <xsl:apply-templates
select="/DGS/BOOKMARKS/TABLEID[BMTABLE= $tablename]"/>
     	          </xsl:element>
     	     </xsl:for-each>
      </xsl:element>
    	</xsl:template>
    	
    	<xsl:template match="TABLEID">
    	       <xsl:element name="FIELD">
    	              <xsl:attribute name="fieldid">
    	                  <xsl:value-of select="BMFIELD"/>
    	              </xsl:attribute>
    	              <xsl:element name="DESC">
    	                     <xsl:value-of select="BMDESC"/>
    	               </xsl:element>
    	               <xsl:element name="XSLTEMP">
    	                   <xsl:value-of select="XSLTEMP"/>
    	               </xsl:element>
           </xsl:element>
    	</xsl:template>
</xsl:stylesheet>

Sample XML Data:
<DGS>
	<BOOKMARKS>
		<TABLEID>
			<BMTABLE>CLAIMANT</BMTABLE>
			<BMDESC>Address 1</BMDESC>
			<BMFIELD>ADDRESS1</BMFIELD>
		</TABLEID>
		<TABLEID>
			<BMTABLE>CLAIMANT</BMTABLE>
			<BMDESC>Address 2</BMDESC>
			<BMFIELD>ADDRESS2</BMFIELD>
		</TABLEID>
		<TABLEID>
			<BMTABLE>CLAIMANT</BMTABLE>
			<BMDESC>ANUMBER</BMDESC>
			<BMFIELD>ANUMBER</BMFIELD>
		</TABLEID>
		<TABLEID>
			<BMTABLE>CLMREP</BMTABLE>
			<BMDESC>FAX number</BMDESC>
			<BMFIELD>FAXNUMBER</BMFIELD>
		</TABLEID>
		<TABLEID>
			<BMTABLE>CLMREP</BMTABLE>
			<BMDESC>Email address</BMDESC>
			<BMFIELD>EMAILADDR</BMFIELD>
		</TABLEID>
	</BOOKMARKS>
</DGS>




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