var timer;
function timeHasElapsed() {
  setTimeout("location.reload(true);",1);
}

if ('1'[0]) document.captureEvents(Event.MOUSEMOVE);
  document.onmousemove = function () {
  if (!timer) timer=setTimeout('timer=null;timeHasElapsed()',120000);
  else {
    clearTimeout(timer);
    timer=setTimeout('timer=null;timeHasElapsed()',120000);
  }
}