Event.addBehavior({
  'div#slideshow' : function(e) {
    start_slideshow(1, 10, 2000);
  }
});
 
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() {
        if (frame == end_frame) { frame = start_frame; } else { 
            Effect.Fade('slideshow' + frame);
			frame = frame + 1; 
			
            setTimeout("Effect.Appear('slideshow" + frame + "');", 850);
            setTimeout(switch_slides(frame, start_frame, end_frame, delay), delay + 850);
			}
    })
}