var http                      =    null;
var Jetzt                     =    new Date();

function updateCounter()
     {

     var Ende                 =    new Date() - Jetzt;
     
     if (window.XMLHttpRequest)
          {

          http                =    new XMLHttpRequest();

          }
     else if(window.ActiveXObject)
          {

          http                =    new ActiveXObject("Microsoft.XMLHTTP");

          }
          
     if (http != null)
          {

          http.open("post", "php/counter.php", true);
          http.onreadystatechange  =    updateCounter_Return;
          http.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=ISO-8859-1");
          http.send("Ladezeit=" + (Ende / 1000));

          }

     }
     
function updateCounter_Return()
     {}