var request = null;
var request2 = null;
try {
  request = new XMLHttpRequest();
  request2 = new XMLHttpRequest();
} catch (trymicrosoft) {
  try {
    request = new ActiveXObject("Msxml2.XMLHTTP");
    request2 = new ActiveXObject("Msxml2.XMLHTTP");
  } catch (othermicrosoft) {
    try {
      request = new ActiveXObject("Microsoft.XMLHTTP");
      request2 = new ActiveXObject("Microsoft.XMLHTTP");
    } catch (failed) {
      request = null;
      request2 = null;
    }
  }
}