// JavaScript Document

function createRequest() {
     try {
       XMLHttpRequestObject = new XMLHttpRequest();
     } catch (trymicrosoft) {
       try {
         XMLHttpRequestObject = new ActiveXObject("Msxml2.XMLHTTP");
       } catch (othermicrosoft) {
         try {
           XMLHttpRequestObject = new ActiveXObject("Microsoft.XMLHTTP");
         } catch (failed) {
           XMLHttpRequestObject = null;
         }  
       }
     }

     if (XMLHttpRequestObject == null)
       alert("Nie udalo sie utworzyc obiektu zadania!");
}