I have it done in HTML.

<!-- Paste in head -->

<script language="JavaScript">

<!-- Trio Script by kurt.grigg@virgin.net

//Choose colours and size of effect !!

var a_Colour='ff0000';

var b_Colour='ffffff';

var c_Colour='0000ff';

var Size=50;

//Alter nothing below !!

var YDummy=new Array(),XDummy=new Array(),xpos=0,ypos=0,ThisStep=0;step=0.2;

if (document.layers){

window.captureEvents(Event.MOUSEMOVE);

function nsMouse(evnt){

xpos = window.pageYOffset+evnt.pageX+6;

ypos = window.pageYOffset+evnt.pageY+16;

}

window.onMouseMove = nsMouse;

}

else if (document.all)

{

function ieMouse(){

xpos = document.body.scrollLeft+event.x+6;

ypos = document.body.scrollTop+event.y+16;

}

document.onmousemove = ieMouse;

}

function swirl(){

for (i = 0; i < 3; i++)

 {

  YDummy[i]=ypos+Size*Math.cos(ThisStep+i*2)*Math.sin((ThisStep+i*25)/2);

  XDummy[i]=xpos+Size*Math.sin(ThisStep+i*2)*Math.sin((ThisStep+i*25)/

2)*Math.sin(ThisStep/4);

 }

ThisStep+=step;

setTimeout('swirl()',10);

}

var amount=10;

if (document.layers){

for (i = 0; i < amount; i++)

{

document.write('<layer name=nsa'+i+' top=0 left=0 width='+i/2+' height='+i/2+'

bgcolor='+a_Colour+'></layer>');

document.write('<layer name=nsb'+i+' top=0 left=0 width='+i/2+' height='+i/2+'

bgcolor='+b_Colour+'></layer>');

document.write('<layer name=nsc'+i+' top=0 left=0 width='+i/2+' height='+i/2+'

bgcolor='+c_Colour+'></layer>');

}

}

else if (document.all){

document.write('<div id="ODiv" style="position:absolute;top:0px;left:0px">'

+'<div id="IDiv" style="position:relative">');

for (i = 0; i < amount; i++)

{

document.write('<div id=x style="position:absolute;top:0px;left:0px;width:'+i/2+';height:'+i/

2+';background:'+a_Colour+';font-size:'+i/2+'"></div>');

document.write('<div id=y style="position:absolute;top:0px;left:0px;width:'+i/2+';height:'+i/

2+';background:'+b_Colour+';font-size:'+i/2+'"></div>');

document.write('<div id=z style="position:absolute;top:0px;left:0px;width:'+i/2+';height:'+i/

2+';background:'+c_Colour+';font-size:'+i/2+'"></div>');

}

document.write('</div></div>');

}

function prepos(){

var ntscp=document.layers;

var msie=document.all;

if (document.layers){

for (i = 0; i < amount; i++)

{

 if (i < amount-1)

 {

 ntscp['nsa'+i].top=ntscp['nsa'+(i+1)].top;ntscp['nsa'+i].left=ntscp['nsa'+(i+1)].left;

 ntscp['nsb'+i].top=ntscp['nsb'+(i+1)].top;ntscp['nsb'+i].left=ntscp['nsb'+(i+1)].left;

 ntscp['nsc'+i].top=ntscp['nsc'+(i+1)].top;ntscp['nsc'+i].left=ntscp['nsc'+(i+1)].left;

 }

else

 {

 ntscp['nsa'+i].top=YDummy[0];ntscp['nsa'+i].left=XDummy[0];

 ntscp['nsb'+i].top=YDummy[1];ntscp['nsb'+i].left=XDummy[1];

 ntscp['nsc'+i].top=YDummy[2];ntscp['nsc'+i].left=XDummy[2];

 }

}

}

else if (document.all){

for (i = 0; i < amount; i++)

{

 if (i < amount-1)

 {

 msie.x[i].style.top=msie.x[i+1].style.top;msie.x[i].style.left=msie.x[i+1].style.left;

 msie.y[i].style.top=msie.y[i+1].style.top;msie.y[i].style.left=msie.y[i+1].style.left;

 msie.z[i].style.top=msie.z[i+1].style.top;msie.z[i].style.left=msie.z[i+1].style.left;

 }

else

 {

 msie.x[i].style.top=YDummy[0];msie.x[i].style.left=XDummy[0];

 msie.y[i].style.top=YDummy[1];msie.y[i].style.left=XDummy[1];

 msie.z[i].style.top=YDummy[2];msie.z[i].style.left=XDummy[2];

 }

}

}

setTimeout("prepos()",10);

}

function Start(){

swirl(),prepos()

}

window.onload=Start;

// -->

</script>