function buildDocument(xmlText){
  var retval;
   try {
    var domParser= new  DOMParser();
    retval=domParser.parseFromString(xmlText,"text/xml");
     if (retval.documentElement.tagName=="parsererror"){
      var reError=/>([\s\S]*?)Location:([\s\S]*?)Line Number (\d+), Column(\d+):<sourcetext>([\s\S]*?)(?:\-*\^)/;
      reError.test(retval.xml);
      alert("An error occurred:\r\nDescription: "+RegExp.$ 1 +"\r\nFile: "+RegExp.$ 2 +"\r\nLine: "+RegExp.$ 3 +"\r\nLine Pos: "+RegExp.$ 4 +"\r\nSource: "+RegExp.$ 5 );
      retval= null ;
    }
     return  retval;
  }  catch (e2) {
    retval= null ;
  }
  var aMSSignatures=["MSXML2.DOMDocument.3.0","MSXML2.DOMDocument","Microsoft.XmlDom"];
   for (var i= 0 ;i<aMSSignatures.length;i++){
     try {
      retval= new  ActiveXObject(aMSSignatures[i]);
      retval.async=false;
      retval.loadXML(xmlText);
       if (retval.parseError!= 0 ) {
        var oError=retval.parseError;
        alert("An error occurred:\nError Code: "+oError.errorCode +"\r\nLine: "+oError.line+ "\r\nLine Pos: "+oError.linepos+"\r\nReason: "+oError.reason);
        retval= null ;
      }
    }  catch (e) {
      retval= null ;
    }
     if (retval)  return  retval;
  }
   return  retval;
}

function selectFirstNode(node,xPath){
  var retval;
   try { retval=node.selectSingleNode(xPath); }
   catch (e){
    var list=selectNodes(node,xPath);
     if (list && list.length> 0 ) retval=list[ 0 ];
     else  retval= null ;
  }
   return  retval;
}
function selectNodes(node,xPath){
  var retval;
   try {
    retval=node.selectNodes(xPath);
  }  catch (e) {
     try {
      var xpe= new  XPathEvaluator();
      var nsResolver=xpe.createNSResolver(node.ownerDocument== null  ? node.documentElement : node.ownerDocument.documentElement);
      var eResult=xpe.evaluate(xPath,node,nsResolver, 0 , null );
      retval=[];
      var eResultItem;
       while (eResultItem=eResult.iterateNext()) retval.push(eResultItem);
    }  catch (e2) {
      retval= null ;
    }
  }
   return  retval;
}

function getNodeText(node){
   if (node && node.firstChild)  return  node.firstChild.nodeValue;
   return  "";
}
function getChildNodeText(node,childName){
   return  getNodeText(selectFirstNode(node,childName));
}