[XHR] readyState blijft 3 (Opgelost)

  xhr.open("POST", "loggedin.php", false);
  xhr.onreadystatechange=function()
  {
alert("readyState = "+xhr.readyState); // debug
    if(xhr.readyState == 4)
    {
      if(xhr.status == 200)
      {
        document.getElementById('tabcontainer').innerHTML=xhr.responseText;
      }
    }
  };
  xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
  xhr.send("display=tabs");

xhr.open("POST", "loggedin.php", false);
  xhr.onreadystatechange=function()
  {
alert("readyState = "+xhr.readyState); // debug
    if(xhr.readyState == 4)
    {
      if(xhr.status == 200)
      {
        document.getElementById('tabcontainer').innerHTML=xhr.responseText;
      }
    }
  };
  xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
  xhr.send("display=tabs");