createCDTATSection(data)

  var xmlDoc = new ActiveXObject("Msxml2.DOMDocument");
  xmlDoc.async = false;
  xmlDoc.load("mydvd.xml");

  var cdataSection = xmlDoc.createCDATASection("This 
      is a comment. It is not parsed by the XML parser. You 
      can include < and > inside this section");

  xmlDoc.documentElement.appendChild(cdataSection);

  function addCDATASection() {
    var xmlDoc = new ActiveXObject("Msxml2.DOMDocument");
    var namedNodeMap;
    xmlDoc.async = false;
    xmlDoc.load("mydvd.xml");
    alert(xmlDoc.documentElement.xml);
    var cdataSection = xmlDoc.createCDATASection("This is
	 a comment. It is not parsed by the XML parser. You can 
	 include < and > inside this section");
    xmlDoc.documentElement.appendChild(cdataSection);
    alert(xmlDoc.documentElement.xml);
}

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