// JavaScript Document

var xmlHttp;

function AjaxStart() {
  // Internet Explorer
  try {
    xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    //alert("Microsoft");
  } catch (e) {
    try {
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      //alert("MSXML2");
    } catch (e) {
      try {
        // Firefox, Opera 8.0+, Safari
        xmlHttp=new XMLHttpRequest();
        //alert("Firefox");
      } catch (e) {
        alert("Your browser does not support AJAX!");
        return false;
      }
    }
  }
}