function saveChanges() {
  try {
    var fso = new ActiveXObject("Scripting.FileSystemObject");
    var schemaCache = new ActiveXObject("MSXML2.XMLSchemaCache.6.0");
    var systemFolder = fso.GetSpecialFolder(1).Path + "\\";
    var nsURI = loadXSD(schemaCache, systemFolder + "schema.xsd");
    var xmlSrc = new ActiveXObject("Msxml2.DOMDocument.6.0");
    xmlSrc.schemas = schemaCache;
    xmlSrc.validateOnParse = true;
    if (!xmlSrc.load(location.href))
      throw new Error(0, "XML load error: " + xmlSrc.parseError.reason);
    xmlSrc.setProperty("SelectionLanguage", "XPath");
    xmlSrc.setProperty("SelectionNamespaces", "xmlns:ns='" + nsURI + "'");

    var valid = xmlSrc.validate();
    if (valid.errorCode != 0)
      throw new Error(0, "XML validate error: " + valid.reason);
      
    var name = xmlSrc.url.replace(/file\:\/\/\//, "");
    var outFile = fso.CreateTextFile(name, true, true);
    outFile.Write(xmlSrc.xml.replace(/\<\?xml version=([\"\'])1.0\1\?\>/, "<?xml version=\"1.0\" encoding=\"utf-16\"?>"));
    outFile.Close();
    
    location.reload();
  } catch (e) {
    alert(e.description);
    alert(e.stack);
  }
}