function getHTTPObject() {
   var xmlhttp;
   if (window.XMLHttpRequest)
      xmlhttp = new XMLHttpRequest();
   else {
      xmlhttp = false;
      /*@cc_on
      @if (@_jscript_version >= 5) {
         try {
            xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (E) {
               xmlhttp = false;
            }
         }
      }
      @else
         xmlhttp = false;
      @end @*/
   }
   return xmlhttp;
};

var ajax = getHTTPObject();
function update(url) {
   if (!ajax || !document.getElementById) return;
   ajax.open("GET", url, true);
   ajax.onreadystatechange = function() {
      if (ajax.readyState == 4) {
         var x = document.getElementById('insert');
         toDOM(ajax.responseText, x);
      }
   }
   ajax.send(null);
};

function AjaxInit() {
   if (!document.getElementById || !document.createElement) return;
   var content = document.getElementById('content');
   var insert = document.createElement('div');
   insert.setAttribute('id', 'insert');
   content.appendChild(insert);
   var url = 'response.php';
   update(url);
};

addEvent(window, 'load', AjaxInit);