function updatepage(str, divid){
  document.getElementById(divid).innerHTML = str;
 }
  
 function xmlhttpPost(strURL, divid) {
  var self = this;
  var XmlHttp = null;
  // Mozilla/Safari
  if (window.XMLHttpRequest) {
   XmlHttp = new XMLHttpRequest();
  }
  // IE
  else if (window.ActiveXObject) {
   XmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
  }
  XmlHttp.open('GET', strURL, true);
  XmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
  XmlHttp.onreadystatechange = function() {
   if (XmlHttp.readyState == 4) {
       updatepage(XmlHttp.responseText, divid);
   }
  }
  XmlHttp.send(null);
 }