start_slideshow(0, 3, 4000);

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, { duration: 0 } );
		if (frame == end_frame) { frame = start_frame; } else { frame++; }
		setTimeout("Effect.Appear('slideshow" + frame + "');", 0 );
		setTimeout(switch_slides(frame, start_frame, end_frame, delay), delay + 850);
	})
}