var XMLHttpRequestObject = false;

   if (window.XMLHttpRequest) {
         XMLHttpRequestObject = new XMLHttpRequest();
   } else if (window.ActiveXObject) {
         XMLHttpRequestObject = new ActiveXObject("Microsoft.XMLHTTP");
   }

   function getData(dataSource, divID) {
      if (XMLHttpRequestObject) {
         var elem = document.getElementById(divID);
         XMLHttpRequestObject.open("GET", dataSource);

         XMLHttpRequestObject.onreadystatechange = function ()
         {
            if (XMLHttpRequestObject.readyState == 4 && 
                XMLHttpRequestObject.status == 200) {
               elem.innerHTML = XMLHttpRequestObject.responseText;
            }
         }

         XMLHttpRequestObject.send(null);
      } else {
         var obj = document.getElementById(divID);
         obj.innerHTML = "Sorry, your browser can't do Ajax.";
      }
   }