Este código crea el efecto de unos puntos alrededor del puntero del ratón

<layer NAME="a0" LEFT="10" TOP="10" VISIBILITY="SHOW"

BGCOLOR="#008888" CLIP="0,0,3,3">
</layer>
<layer NAME="a1" LEFT="10" TOP="10" VISIBILITY="SHOW"

BGCOLOR="#888800" CLIP="0,0,3,3">
</layer>
<layer NAME="a2" LEFT="10" TOP="10" VISIBILITY="SHOW"

BGCOLOR="#880088" CLIP="0,0,3,3">
</layer>
<layer NAME="a3" LEFT="10" TOP="10" VISIBILITY="SHOW"

BGCOLOR="#880000" CLIP="0,0,3,3">
</layer>
<layer NAME="a4" LEFT="10" TOP="10" VISIBILITY="SHOW"

BGCOLOR="#008800" CLIP="0,0,3,3">
</layer>
<layer NAME="a5" LEFT="10" TOP="10" VISIBILITY="SHOW"

BGCOLOR="#000088" CLIP="0,0,3,3">
</layer>
<layer NAME="a6" LEFT="10" TOP="10" VISIBILITY="SHOW"

BGCOLOR="#000000" CLIP="0,0,3,3">
</layer>
<script>

var clr=new Array("880000","008800","000088","888800",
"880088","008888","000000")
if (document.all){
document.write('<div id="starsDiv" style="position:absolute;top:0px;left:0px">')
for (xy=0;xy<7;xy++)
document.write('<div style=

"position:relative;width:3px;height:
3px;background:#'+clr[xy]+'
;font-size:2px;visibility:visible"></div>')
document.write('</div>')
}

if (document.layers)
{window.captureEvents(Event.MOUSEMOVE);}
var yBase = 200;
var xBase = 200;
var yAmpl = 10;
var yMax = 40;
var step = .2;
var ystep = .5;
var currStep = 0;
var tAmpl=1;
var Xpos = 1;
var Ypos = 1;
var i = 0;
var j = 0;

if (document.all)
{
function MoveHandler(){
Xpos = document.body.scrollLeft+event.x;
Ypos = document.body.scrollTop+event.y;
}
document.onmousemove = MoveHandler;
}

else if (document.layers)
{
function xMoveHandler(evnt){
Xpos = evnt.pageX;
Ypos = evnt.pageY;
}
window.onMouseMove = xMoveHandler;
}

function animateLogo() {
if (document.all)
{
yBase = window.document.body.offsetHeight/4;
xBase = window.document.body.offsetWidth/4;
}
else if (document.layers)
{
yBase = window.innerHeight/4 ;
xBase = window.innerWidth/4;
}

if (document.all)
{
var totaldivs=document.all.starsDiv.all.length
for ( i = 0 ; i < totaldivs ; i++ )
{
var tempdiv=document.all.starsDiv.all[i].style
tempdiv.top = Ypos + Math.cos
((20*Math.sin(currStep/20))+i*70

)*yBase*(Math.sin(10+currStep/10)+0.2)*Math.cos
((currStep + i*25)/10);
tempdiv.left = Xpos + Math.sin((20*Math.
sin(currStep/20))+i*70)

*xBase*(Math.sin(10+currStep/10)+0.2)*Math.cos
((currStep + i*25)/10);
}
}

else if (document.layers)
{
for ( j = 0 ; j < 7 ; j++ )
{
var templayer="a"+j
document.layers[templayer].top = Ypos + Math.cos((20*Math.sin(currStep/20))+j*70)

*yBase*(Math.sin(10+currStep/10)+0.2)*Math.cos
((currStep + j*25)/10);
document.layers[templayer].left =Xpos + Math.sin((20*Math.sin(currStep/20))+j*70)

*xBase*(Math.sin(10+currStep/10)+0.2)*Math.cos
((currStep + j*25)/10);
}
}
currStep += step;
setTimeout("animateLogo()", 15);
}
animateLogo();

</script>