Parsing and serializing XML

xml

function XmlToString(xmlData)
{        
    var xmlString;
    //IE
    if (window.ActiveXObject) 
    {
        xmlString = xmlData.xml;
        //xmlString = xmlData.xml ? xmlData.xml : (new XMLSerializer()).serializeToString(xmlData);
    }
    else
    {
        xmlString = (new XMLSerializer()).serializeToString(xmlData);        
    }
    return xmlString;
}

function StringtoXML(text){
    if(!isString(text))
        return text;
    if (window.ActiveXObject){
      var doc=new ActiveXObject('Microsoft.XMLDOM');
      doc.async='false';
      doc.loadXML(text);
    } else {
      var parser=new DOMParser();
      var doc=parser.parseFromString(text,'text/xml');
    }
    return doc;
}