var slides = new Array;
slides[0] = 'img0';
slides[1] = 'img1';
slides[2] = 'img2';
slides[3] = 'img3';

var i = 0;

function start_slideshow() {
	setInterval('SlideShow()', 5000);  // This is a javascript function which acts as a timer.
}

function SlideShow() {
	Effect.Fade(slides[i], { duration:2, from:1.0, to:0.0 });
	i++;
	
	if (i == 4) i = 0;
	Effect.Appear(slides[i], { duration:2, from:0.0, to:1.0 });
}