I found screenshufflling in the manual:

Code:
function screenshuffle()
{
  var amplitude = 1;
  var grad = 0;
  while(amplitude > 0)
  {
    camera.aspect = cos(grad)*amplitude;
    grad += time_step;
    amplitude -= 0.01 * time_step;
    wait(1);
  }
}


that is pretty cool. But now quite yet what I am looking for..