function start_slideshow(divname, start_frame, end_frame, delay) {
	setTimeout(switch_slides(divname, start_frame,start_frame,end_frame, delay), Math.random()*delay);
}
						
function switch_slides(divname, frame, start_frame, end_frame, delay) {
	return (function() {
		Effect.Fade(divname + frame);
		if (frame == end_frame) { frame = start_frame; } else { frame = frame + 1; }
		setTimeout("Effect.Appear('" + divname + frame + "');", 2000);
		setTimeout(switch_slides(divname, frame, start_frame, end_frame, delay), delay + 2000);
	})
}