var slides = new Array(
		'slide1', 
		'slide2',
		'slide3',
		'slide4',
		'slide5',
		'slide6',
		'slide7',
		'slide8',
		'slide9',
		'slide10',
		'slide11',
		'slide12',
		'slide13',
		'slide14',
		'slide15',
		'slide16',
		'slide17',
		'slide18',
		'slide19',
		'slide20'
	); 
	
	var i = 0; 
	var wait = 3000;

function SlideShow() {
	
	Effect.Fade(slides[i], { duration:1, from:1.0, to:0.0 }); 
	i++;
	if (i == 20) 
		i = 0; 
	Effect.Appear(slides[i], { duration:1, from:0.0, to:1.0 });
}

function start_slideshow() { 
	setInterval('SlideShow()',wait); 
}