//var counter = 0;
function refresh() {
  //counter++;
  //window.status = counter;
  var pingImg = new Image();
  var random = Math.floor((Math.random()+1)*1000000);
  pingImg.src = 'http://studios.2lipslive.com/sid_extend.php?rn='+random;  
}
setInterval("refresh()", 720000);