/* CHANGELOG:
 * 
 * Kristina M. Lim
 * - Added support for stopping the slide show.
 * - Added support for setting delay.
 */

var delay = 3000;
var start_frame = 0;
var __stopSlideShow = false;

function init() {
	var lis = $$('#slide-images div.slide');
	
	for( i=0; i < lis.length; i++){
		if(i!=0){
			lis[i].style.display = 'none';
		}
	}
	end_frame = lis.length -1;
	
	start_slideshow(start_frame, end_frame, lis);
	
	
}

function setDelay(milliseconds) {
	delay = milliseconds;

	return true;
}

function start_slideshow(start_frame, end_frame, lis) {
	setTimeout(fadeInOut(start_frame,start_frame,end_frame, lis), delay);
}


function fadeInOut(frame, start_frame, end_frame, lis) {
	return (function() {
		if (__stopSlideShow == false) {
			lis = $$('#slide-images div.slide');
			Effect.Fade(lis[frame]);
			if (frame == end_frame) { frame = start_frame; } else { frame++; }
			lisAppear = lis[frame];
			setTimeout("Effect.Appear(lisAppear);", 0);
			setTimeout(fadeInOut(frame, start_frame, end_frame), delay + 1850);
		}
	})
	
}

function stopSlideShow() {
	__stopSlideShow = true;

	return true;
}


Event.observe(window, 'load', init, false);