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 + "');", 850);
	    setTimeout(switch_slides(frame, start_frame, end_frame, delay), delay + 850);
	});
}