function start_slideshow(start_frame, end_frame, delay, adder) {
	setTimeout(switch_slides(start_frame,start_frame,end_frame, delay, adder), delay);
}
						

function switch_slides(frame, start_frame, end_frame, delay, adder) {
	return (function() {
		Effect.Fade('slideshow' + frame);
		frame = frame + (adder);
		setTimeout("Effect.Appear('slideshow" + frame + "');", 850);
		//setTimeout(switch_slides(frame, start_frame, end_frame, delay), delay + 850);
	})
}