function getXMLHTTPRequest()
{
var request = false;
try
  {
    request = new XMLHttpRequest();
  }  
catch(err1)
  {
    try
    {
      vrequest = new ActiveXObject("Msxml2.XMLHTTP");
    }
    catch(err2)
    {
      try
      {
        request = new ActiveXObject("Microsoft.XMLHTTP");
      }
      catch(err3)
      {
        request = false;
      }
    }
  }
return request;
}