Hi all,

I'm receiving output from a webservice formatted as follows: 

<?xml version="1.0" encoding="utf-8"?>
<DataSet xmlns="http://tempuri.org/adrloc/levering">
  <xs:schema id="Bridgis_DataSet" xmlns="" 
xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-
microsoft-com:xml-msdata">
    <xs:element name="Bridgis_DataSet" msdata:IsDataSet="true">
      <xs:complexType>
        <xs:choice maxOccurs="unbounded">
          <xs:element name="Bridgis_DataTable">
            <xs:complexType>
              <xs:sequence>
                <xs:element name="PSTK" type="xs:string" minOccurs="0" />
                <xs:element name="STRAAT_NEN" type="xs:string" 
minOccurs="0" />
                <xs:element name="STRAAT_PTT" type="xs:string" 
minOccurs="0" />
                <xs:element name="STRAAT_OFF" type="xs:string" 
minOccurs="0" />
                <xs:element name="HUISNUMMER" type="xs:decimal" 
minOccurs="0" />
                <xs:element name="TOEVOEGING" type="xs:string" 
minOccurs="0" />
                <xs:element name="PERCEELCOD" type="xs:string" 
minOccurs="0" />
                <xs:element name="PLAATS_NEN" type="xs:string" 
minOccurs="0" />
                <xs:element name="PLAATS_PTT" type="xs:string" 
minOccurs="0" />
                <xs:element name="GEMEENTE" type="xs:string" 
minOccurs="0" />
              </xs:sequence>
            </xs:complexType>
          </xs:element>
        </xs:choice>
      </xs:complexType>
    </xs:element>
  </xs:schema>
  <diffgr:diffgram xmlns:msdata="urn:schemas-microsoft-com:xml-msdata" 
xmlns:diffgr="urn:schemas-microsoft-com:xml-diffgram-v1">
    <Bridgis_DataSet xmlns="">
      <Bridgis_DataTable diffgr:id="Bridgis_DataTable1" 
msdata:rowOrder="0" diffgr:hasChanges="inserted">
        <PSTK>3544AA</PSTK>
        <STRAAT_NEN>Zandweg                 </STRAAT_NEN>
        <STRAAT_PTT>ZANDWG           </STRAAT_PTT>
        <STRAAT_OFF>Zandweg                                    
</STRAAT_OFF>
        <HUISNUMMER>10</HUISNUMMER>
        <TOEVOEGING>      </TOEVOEGING>
        <PERCEELCOD>T</PERCEELCOD>
        <PLAATS_NEN>UTRECHT                 </PLAATS_NEN>
        <PLAATS_PTT>UTRECHT           </PLAATS_PTT>
        <GEMEENTE>UTRECHT                 </GEMEENTE>
      </Bridgis_DataTable>
      <Bridgis_DataTable diffgr:id="Bridgis_DataTable2" 
msdata:rowOrder="1" diffgr:hasChanges="inserted">
        <PSTK>3544AA</PSTK>
        <STRAAT_NEN>Zandweg                 </STRAAT_NEN>
        <STRAAT_PTT>ZANDWG           </STRAAT_PTT>
        <STRAAT_OFF>Zandweg                                    
</STRAAT_OFF>
        <HUISNUMMER>9</HUISNUMMER>
        <TOEVOEGING>      </TOEVOEGING>
        <PERCEELCOD>T</PERCEELCOD>
        <PLAATS_NEN>UTRECHT                 </PLAATS_NEN>
        <PLAATS_PTT>UTRECHT           </PLAATS_PTT>
        <GEMEENTE>UTRECHT                 </GEMEENTE>
      </Bridgis_DataTable>
    </Bridgis_DataSet>
  </diffgr:diffgram>
</DataSet>    

The number of records can be very large. I need to transform this to a tab-
separated text file within an ASP script. At the moment I go about this as 
follows (all code below is JScript):

---CODE---
strXML=String(rsXML(0));
oXMLDOM.loadXML(strXML);
oDatanodes=oXMLDOM.getElementsByTagName("Bridgis_DataTable");
strOut+=WriteRows(oDatanodes);
---END---

Where WriteRows is:

---CODE---
function WriteRows(oDataNodes) {
	strOut="";
	for(i=0;i<oDatanodes.length;i++) {
		nRecords++;
		aCh=new Array();
		oDatanode=oDatanodes.item(i);
		nChildren=oDatanode.childNodes.length;
		for(j=0;j<nChildren;j++) {
			oChild=oDatanode.childNodes.item(j);
			aCh.push(oChild.text);
		}
		strOut+=aCh.join("\t")+"\n";
	}
	return strOut;	
}
---END---

This is a very expensive operation which is not acceptable because the XML 
recordsets i get are very large (can be up to 1,000,000 records), so I am 
looking to implement a more efficient way to do this. I'm thinking about 
XSLT but don't know how I would integrate this into my ASP script. Any 
ideas?

Thanks,
Martijn