var i = 0;
function SlideShow() {
	var num_pics_arr = $('num_pics_arr').value;
	num_pics_arr++;
	Effect.Fade('img'+i, { duration:1, from:1.0, to:0.0 }); 
	i++;
	if (i == num_pics_arr) i = 0;
	Effect.Appear('img'+i, { duration:1, from:0.0, to:1.0 });
} 


// the onload event handler that starts the fading. 
function start_slideshow() { 
	setInterval('SlideShow()',5000); 
}