function loadxmldoc(xmltext)
{
  var xmldoc=false;
  if (window.ActiveXObject)
  {
    xmldoc = new ActiveXObject("Microsoft.XMLDOM");
    xmldoc.async = false;
    xmldoc.loadXML(xmltext);
  }
  else if (document.implementation && document.implementation.createDocument)
  {
    var parser = new DOMParser();
    xmldoc = parser.parseFromString(xmltext, 'text/xml');
  }
  return xmldoc;
}

var xmlstr = xmldoc.xml;

function transform2(xmldoc)
{ //works in Gecko, Opera9
 var XmlSer;
 XmlSer=new XMLSerializer();
 return XmlSer.serializeToString(xmldoc);
}