var xmlhttp
var code

function doCallMeBack()
{
code = Math.random();
xmlhttp=GetXmlHttpObject();
if (xmlhttp==null)
  {
  alert ("Your browser does not support AJAX. Please upgrade your browser.");
  return;
  }
var callmebacknroreml = document.getElementById("callmebacknumber").value.replace("+","00"); 
var url="callmeback.php";
url=url+"?c="+code;
url=url+"&n="+document.getElementById("callmebacknaam").value;
url=url+"&m="+callmebacknroreml;
url=url+"&u="+document.location.href;
xmlhttp.onreadystatechange=stateChangedMenu;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
}

function stateChangedMenu()
{
  //alert(xmlhttp.responseText);
  if (xmlhttp.readyState==4 && xmlhttp.responseText.indexOf(code) > 0)
  {
    document.getElementById("callmebackdiv").innerHTML=xmlhttp.responseText;
  }
}

function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  return new XMLHttpRequest();
  }
if (window.ActiveXObject)
  {
  // code for IE6, IE5
  return new ActiveXObject("Microsoft.XMLHTTP");
  }
return null;
}