// JavaScript Document

 function callAJAX(url, pageElement, callMessage) {
     document.getElementById(pageElement).innerHTML = callMessage;
     try {
       req = new XMLHttpRequest(); /* e.g. Firefox */
     } catch(e) {
       try {
       req = new ActiveXObject("Msxml2.XMLHTTP");
     /* some versions IE */
       } catch (e) {
         try {
         req = new ActiveXObject("Microsoft.XMLHTTP");
   /* some versions IE */
         } catch (E) {
           req = false;
        }
       }
     }
  
     req.onreadystatechange = function() {responseAJAX(pageElement);};
     req.open("GET",url,true);
     req.send(null);
  
   }
  
  function responseAJAX(pageElement) {
     var output = '';
     if(req.readyState == 4) {
       if(req.status == 200) {
         output = req.responseText;
        document.getElementById(pageElement).innerHTML = output;
       }
     }
   }