围绕鼠标旋转的三叶空间旋浆

<html>

<head>
<title>阿里西西网页特效演示,围绕鼠标旋转的三叶空间旋浆</title>
<meta content="text/html; charset=gb2312" http-equiv="Content-Type">

</head>

<body bgColor="#000000">

<script
    language="JavaScript">
<!--
//To add more stars simply add more colours in below array!!
colours=new Array('ff0000','00ff00','3366ff','ff00ff','ffa500','ffffff','fff000')

//Alter nothing below!!
amount=colours.length;
YgetDelay=0,XgetDelay=0,Ydelay=0,Xdelay=0,ns=(document.layers)?1:0,step=0.2,currStep=0,my=0,mx=0;
if (ns){
for (i=0; i < amount; i++)
document.write('<LAYER NAME="nsstars'+i+'" BGCOLOR='+colours[i]+' CLIP="0,0,2,2"></LAYER>');
}
else{
document.write('<div id="ie" style="position:absolute;top:0;left:0;"><div style="position:relative">');
for (i=0; i < amount; i++)
document.write('<span id="iestars" style="position:absolute;top:0;left:0;width:2px;height:2px;background:'+colours[i]+';font-size:2px"></span>');
document.write('</div></div>');
}
if (ns){
window.captureEvents(Event.MOUSEMOVE);
function nMouse(evnt){                              
my=evnt.pageY;mx=evnt.pageX
}
window.onMouseMove=nMouse;
}
else{
function iMouse(){
my=event.y;mx=event.x;
}
document.onmousemove=iMouse
}
function stars(){
if (!ns)ie.style.top=document.body.scrollTop;
for (i=0; i < amount; i++)
 {
 var layer=(document.layers)?document.layers["nsstars"+i]:iestars[i].style;
 layer.top= Ydelay+100*Math.sin((5*Math.sin((currStep-15.99)/10))+i*70)*Math.sin((currStep)/10)*Math.cos((currStep+i*25)/10);
 layer.left=Xdelay+180*Math.cos((5*Math.sin((currStep-15.99)/10))+i*70)*Math.sin((currStep)/10)*Math.cos((currStep+i*25)/10);
 }
currStep+=step;
}

function delay(){
Ydelay = YgetDelay+=(my-YgetDelay)*1/20;
Xdelay = XgetDelay+=(mx-XgetDelay)*1/20;
stars();
setTimeout('delay()',10);
}
delay();
//-->
      </script>
     
<script language="JavaScript">    
 
<!-- hide
 
function goHist(a) 
 
{
 
   history.go(a);
 
}
 
//-->
 
      </script>

</body>
</html>

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