Script immagine che segue il mouse

[Alex193]

Ciao a tutti, sono nuovo del Forum ... Volevo sapere una cosa.. ho messo in una pagina web uno script per far seguire il mouse da un'immagine. Lo script l'ho trovato in rete ed è questo:

<div id="dot0" style="position: absolute; visibility: hidden; height: 11; width: 11;">
[img]immagini/bullet.gif[/img]
</div>
<div id="dot1" style="position: absolute; height: 11; width: 11;">
[img]immagini/bullet.gif[/img]
</div>
<div id="dot2" style="position: absolute; height: 11; width: 11;">
[img]immagini/bullet.gif[/img]

</div>
<div id="dot3" style="position: absolute; height: 11; width: 11;">
[img]immagini/bullet.gif[/img]
</div>
<div id="dot4" style="position: absolute; height: 11; width: 11;">
[img]immagini/bullet.gif[/img]
</div>
<div id="dot5" style="position: absolute; height: 11; width: 11;">
[img]immagini/bullet.gif[/img]
</div>
<div id="dot6" style="position: absolute; height: 11; width: 11;">
[img]immagini/bullet.gif[/img]
</div>

<script LANGUAGE="JavaScript">
<!--
var nDots = 7;
var Xpos = 0;
var Ypos = 0;
var DELTAT = .01;
var SEGLEN = 10;
var SPRINGK = 10;
var MASS = 1;
var XGRAVITY = 0;
var YGRAVITY = 50;
var RESISTANCE = 10;
var STOPVEL = 0.1;
var STOPACC = 0.1;
var DOTSIZE = 11;
var BOUNCE = 0.75;
var isNetscape = navigator.appName=="Netscape";
var followmouse = true;
var dots = new Array();
init();
function init(){
var i = 0;
for (i = 0; i < nDots; i++) {
dots[i] = new dot(i); }
if (!isNetscape) {
}
for (i = 0; i < nDots; i++) {
dots[i].obj.left = dots[i].X;
dots[i].obj.top = dots[i].Y; }
if (isNetscape) {
startanimate(); } else {
setTimeout("startanimate()", 1000); }}
function dot(i){
this.X = Xpos;
this.Y = Ypos;
this.dx = 0;
this.dy = 0;
if (isNetscape) {
this.obj = eval("document.dot" + i); } else {
this.obj = eval("dot" + i + ".style"); }}
function startanimate() {
setInterval("animate()", 20);}
function setInitPositions(dots) {
var startloc = document.all.tags("LI");
var i = 0;
for (i = 0; i < startloc.length && i < (nDots - 1); i++) {
dots[i+1].X = startloc[i].offsetLeft
startloc[i].offsetParent.offsetLeft - DOTSIZE;
dots[i+1].Y = startloc[i].offsetTop +
startloc[i].offsetParent.offsetTop + 2*DOTSIZE; }
dots[0].X = dots[1].X;
dots[0].Y = dots[1].Y - SEGLEN;}
function MoveHandler(e){
Xpos = e.pageX;
Ypos = e.pageY;
return true;}
function MoveHandlerIE() {
Xpos = window.event.x + document.body.scrollLeft;
Ypos = window.event.y + document.body.scrollTop; }
if (isNetscape) {
document.captureEvents(Event.MOUSEMOVE);
document.onMouseMove = MoveHandler;
} else {
document.onmousemove = MoveHandlerIE;}
function vec(X, Y){
this.X = X;
this.Y = Y;}
function springForce(i, j, spring){
var dx = (dots[i].X - dots[j].X);
var dy = (dots[i].Y - dots[j].Y);
var len = Math.sqrt(dx*dx + dy*dy);
if (len > SEGLEN) {
var springF = SPRINGK * (len - SEGLEN);
spring.X += (dx / len) * springF;
spring.Y += (dy / len) * springF; }}
function animate() {
var start = 0;
if (followmouse) {
dots[0].X = Xpos;
dots[0].Y = Ypos;
start = 1; }
for (i = start ; i < nDots; i++ ) {
var spring = new vec(0, 0);
if (i > 0) {
springForce(i-1, i, spring); }
if (i < (nDots - 1)) {
springForce(i+1, i, spring); }
var resist = new vec(-dots[i].dx * RESISTANCE,
-dots[i].dy * RESISTANCE);
var accel = new vec((spring.X + resist.X)/MASS + XGRAVITY,
(spring.Y + resist.Y)/ MASS + YGRAVITY);
dots[i].dx += (DELTAT * accel.X);
dots[i].dy += (DELTAT * accel.Y);
if (Math.abs(dots[i].dx) < STOPVEL &&
Math.abs(dots[i].dy) < STOPVEL &&
Math.abs(accel.X) < STOPACC &&
Math.abs(accel.Y) < STOPACC) {
dots[i].dx = 0;
dots[i].dy = 0; }
dots[i].X += dots[i].dx;
dots[i].Y += dots[i].dy;
var height, width;
if (isNetscape) {
height = window.innerHeight + window.pageYOffset;
width = window.innerWidth + window.pageXOffset;
} else {
height = document.body.clientHeight + document.body.scrollTop;
width = document.body.clientWidth + document.body.scrollLeft; }
if (dots[i].Y >= height - DOTSIZE - 1) {
if (dots[i].dy > 0) {
dots[i].dy = BOUNCE * -dots[i].dy; }
dots[i].Y = height - DOTSIZE - 1; }
if (dots[i].X >= width - DOTSIZE) {
if (dots[i].dx > 0) {
dots[i].dx = BOUNCE * -dots[i].dx; }
dots[i].X = width - DOTSIZE - 1; }
if (dots[i].X < 0) {
if (dots[i].dx < 0) {
dots[i].dx = BOUNCE * -dots[i].dx; }
dots[i].X = 0; }
dots[i].obj.left = dots[i].X;
dots[i].obj.top = dots[i].Y; }}
-->
</script>

Il problema è che con Internet Explorer funziona, mentre con Mozilla Firefox e Google Chrome no, l'immagine resta ferma in alto nella pagina . Come posso rendere compatibile lo script anche con questi due Browser??

Grazie in anticipo