start_slideshow(1, 6, 3000);
function start_slideshow(start_frame, end_frame, delay) {
  setTimeout(switch_slides(start_frame,start_frame,end_frame, delay), delay);
}
                            
function switch_slides(frame, start_frame, end_frame, delay) {
  return (function() {
    Effect.Fade('slideshow' + frame);
    if (frame == end_frame) { frame = start_frame; } else { frame = frame + 1; }
    setTimeout("Effect.Appear('slideshow" + frame + "');", 1200);
    setTimeout(switch_slides(frame, start_frame, end_frame, delay), delay + 1200);
  })
}