Код:
 <SCRIPT LANGUAGE="JavaScript"> 
<!-- Begin 
ns = (document.layers)?1:0; 
Clrs = new Array('ff0000','00ff00','ffffff','ff00ff','ffa500','ffff00','00ff00','ffffff','ff00ff') 
yBase = 0; 
xBase = 0; 
step = 3; 
currStep = 0; 
Ypos = 0; 
Xpos = 0; 
if (ns){ 
for (i = 0; i < 14; i++) 
document.write('<LAYER NAME="n'+i+'" LEFT=0 TOP=0 CLIP="0,0,'+i/4+','+i/4+'"></LAYER>'); 
window.captureEvents(Event.MOUSEMOVE); 
function nMouse(evnt){ 
Ypos = evnt.pageY; 
Xpos = evnt.pageX; 
} 
window.onMouseMove = nMouse; 
} 
else{ 
document.write('<div style="position:absolute;top:0;left:0"><div style="position:relative">'); 
for (i=0; i < 14; i++) 
{document.write('<div id="me" style="position:absolute;top:0;left:0;width:'+i/4+';height:'+i/4+';font-size:'+i/4+'"></div>')} 
document.write('</div></div>'); 
function iMouse() { 
Ypos = event.y+document.body.scrollTop; 
Xpos = event.x+document.body.scrollLeft; 
} 
document.onmousemove = iMouse; 
} 
function Comet() { 
var yBase = (document.layers)?window.innerHeight/4:window.document.body.clientHeight/4; 
var xBase = (document.layers)?window.innerWidth/4:window.document.body.clientWidth/4; 
for (i = 0; i < 14; i++){ 
var randCol = Math.round(Math.random()*8); 
var layer = (document.layers)?document.layers['n'+i]:me[i].style; 
layer.top =Ypos + yBase*Math.cos((currStep+i*4)/12)*Math.cos(0.7+currStep/200); 
layer.left = Xpos + xBase*Math.sin((currStep+i*3)/10)*Math.sin(8.2+currStep/400); 
if (ns) layer.bgColor = Clrs[randCol]; 
else 
layer.background = Clrs[randCol]; 
} 
currStep += step; 
setTimeout("Comet()",10); 
} 
window.onload = Comet; 
// End --> 
</script> 
</head> 
<body bgcolor="#000000" text="#FFFFFF"> 
</body>