var topImgs;
var efectsImg;
var image;
function init(){
	topImgs = $('top-img').getElements('img');
	efectsImg = Array(topImgs.length);
	image=topImgs.length-1;

	for(var i=0; i<topImgs.length; i++){
		efectsImg[i] = topImgs[i].effect('opacity', {duration: 4000, transition: Fx.Transitions.Cubic.easeOut});
	}

	for(var i=0; i<image; i++){
		efectsImg[i].set(0);
	}
	setTimeout('changeImage();', 1000);
}


function changeImage(){
	var nextImage;
	if(image==topImgs.length-1){
		nextImage=0;
	}else{
		nextImage=image+1;
	}
	efectsImg[nextImage].start(0, 1);
	efectsImg[image].set(0);
	image=nextImage;
	setTimeout('changeImage();', 5000);
}
init();