sto utilizzando questo script

<SCRIPT LANGUAGE="Javascript"><!--
var pictures = new Array ("foto1.jpg","foto2.jpg","foto3.jpg");
var pictureNumber = 0;
var totalNumber = pictures.length;

function previous(){
if (document.images){
if (pictureNumber > 0) pictureNumber--
else
pictureNumber = totalNumber-1
document.images.slides.src = pictures[pictureNumber]
}
}
function next(){
if (document.images){
if (pictureNumber < totalNumber-1) pictureNumber++
else
pictureNumber = 0
document.images.slides.src = pictures[pictureNumber]
}
}
//--></SCRIPT>
[img]foto1.jpg[/img]

&lt; &gt;

e mi funziona, pero non mi fa il fade... cosa devo aggiungere?