Ti giro l'aiuto che han dato a me.

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<head>
<title>Untitled</title>
<script language="JavaScript" type="text/javascript">
<!--
var tIdX = '';
var imgIndex = -1;
var arrImg = new Array();
var speed = 4000;

arrImg[0] = "http://localhost/site2//ima/presentation/eglise.jpg";
arrImg[1] = "http://localhost/site2//ima/presentation/vues_loyettes.jpg";
arrImg[2] = "http://localhost/site2//ima/presentation/far.jpg";
arrImg[3] = "http://localhost/site2//ima/presentation/mairie.jpg";

function animateX() {
clearTimeout(tIdX);
if (imgIndex < arrImg.length-1) {
imgIndex++;
} else {
imgIndex = 0;
} // if (imgIndex <= arrImg.lenght-1)
document.getElementById('myImg').src = arrImg[imgIndex];
document.getElementById('myImg').alt = imgIndex;
tIdX=setTimeout('animateX()', speed);
} // function animateX()

//-->
</script>
</head>
<body>

[img][/img]

<script language="JavaScript" type="text/javascript">
<!--
animateX();
//-->
</script>

</body>

</html>

Ciao.