[Shay Ben Moshe]

היי,
תחליף את:

function createXMLHttpRequest() {
 var ua;
 if(window.XMLHttpRequest) {
 try {
  ua = new XMLHttpRequest();
 } catch(e) {
  ua = false;
 }
 } else if(window.ActiveXObject) {
  try {
	ua = new ActiveXObject("Microsoft.XMLHTTP");
  } catch(e) {
	ua = false;
  }
 }
return ua;
}

ב:

function getXMLHttp() {
 var ua;
 try {
  //Firefox, Opera 8.0+, Safari
  ua = new XMLHttpRequest();
 }
 catch(e) {
  //Internet Explorer
  try {
   ua = new ActiveXObject("Msxml2.XMLHTTP");
  }
  catch(e) {
   try {
    ua = new ActiveXObject("Microsoft.XMLHTTP");
   }
   catch(e) {
    return false;
   }
  }
 }
 return ua;
}

בהצלחה!