var slides = new Array(); 
var i = 0; var wait = 6000;

function SlideShow() {

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

// the onload event handler that starts the fading. 
function start_slideshow() { 
 slides = document.getElementById('slideshow').getElementsByTagName('li');
 for(a=0;a<slides.length;a++) {
	slides[a].id = 'slide_'+a;
 }
 setInterval('SlideShow()',wait); 
}
start_slideshow();