function ajaxObject()
{
  var xmlHttp = null;
  try
  {  // Firefox, Opera 8.0+, Safari, IE 7+
    xmlHttp = new XMLHttpRequest();
  }
  catch (e)
  {  // Internet Explorer
    try
    {
      xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
    }
    catch (e)
    {
      try
      {
        xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
      }
      catch (e)
      {
        try
        {
          xmlHttp = new ActiveXObject("Msxml2.XMLHTTP.6.0");
        }
        catch (e)
        {
          try
          {
            xmlHttp = new ActiveXObject("Msxml2.XMLHTTP.3.0");
          }
          catch (e)
          {
          }
        }
      }
    }
  }
  return xmlHttp;
}