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('image' + frame);
        if (frame == end_frame) { frame = start_frame; } else { frame = frame + 1; }
      	setTimeout("Effect.Appear('image" + frame + "');", 850);
        setTimeout(switch_slides(frame, start_frame, end_frame, delay), delay + 850);
     })
}