图片聚光灯效果

代码如下:
<style>
#myimage{filter:light}
body {
 background-color: #000000;powered by 25175.net
}
</style>
<div id="myimg" align="center">
<img src="http://img.star.25175.com/star/stars/1760/photos/M72353.jpg" id="myimage">
</div>
<script language="JavaScript">
<!--
s = 50; // 聚光灯的大小
vp = 40; // 图片可见度
startx = 30; // the top position of your sportlight into the image (on start)
starty = 30; // the left position of your spotlight into the image (on start)

var IE = document.all?true:false

function moveL()
{
xv = tempX;
yv = tempY;
myimage.filters.light.MoveLight(1,xv,yv,s,true);
}

if (IE&&myimage.filters)
document.all.myimage.onmousemove = getMouseXY;
var tempX = 0
var tempY = 0

function getMouseXY(e) {
tempX = event.offsetX
tempY = event.offsetY

  if (tempX < 0){tempX = 0}
  if (tempY < 0){tempY = 0}
  if (t)
  { 
   moveL();
  }

  return true
}

var xv = startx;
var yv = starty;
var t= true;
if (IE&&myimage.filters){
myimage.style.cursor="hand";
myimage.filters.light.addAmbient(255,255,255,vp)
myimage.filters.light.addPoint(startx,starty,s,255,255,255,255)
}
//-->
</script>