var request;

function createRequest() {
/*  try {
    request = new XMLHttpRequest();
  } catch (trymicrosoft) {
    try {
      request = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (othermicrosoft) {
      try {
        request = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (failed) {
        request = false;
      }
    }
  }
*/
  if (window.XMLHttpRequest) { // Mozilla, Safari, ...
    request = new XMLHttpRequest();
	} else if (window.ActiveXObject) { // IE
	    request = new ActiveXObject("Microsoft.XMLHTTP");
	}


  if (!request)
    alert("Error initializing XMLHttpRequest!");
}