function createXMLHTTPObject()
  {
      if (typeof XMLHttpRequest != 'undefined')
      {
          return new XMLHttpRequest();
      }
      else if (window.ActiveXObject)
      {
          var axo = [
              'Microsoft.XmlHttp',
              'MSXML2.XmlHttp',
              'MSXML2.XmlHttp.3.0',
              'MSXML2.XmlHttp.4.0',
              'MSXML2.XmlHttp.5.0'
          ];
  
          for (var i = axo.length - 1; i > -1; i--)
          {
              try
              {
                  httpObj = new ActiveXObject(axo[i]);
                  return httpObj;
              }
              catch(e) {}
          }
      }
  
      throw new Error('XMLHTTP not supported');
  }