var resObjekt;

if( navigator.appName.search('Microsoft') > -1) {

  //resObjekt = new ActiveXObject("Microsoft.XMLHTTP");
  resObjekt = new ActiveXObject("MSXML2.XMLHTTP");  

} else {
  resObjekt = new XMLHttpRequest();
}

function ajax_request(request_methode, lnk) {
  resObjekt.open(request_methode, lnk, true);
  resObjekt.onreadystatechange = handleResponse;
  resObjekt.send(null);

}