一直非常喜欢Google首页上那7个点的特效!今天闲暇时，从网上搜到了它的原代码，感觉太难，完全看不懂。还好找到一段较精简的仿Google首页特效的代码，相对容易点，不过还是有很多地方看不明白。看来自已的JS+CSS水品差远了。还是先收藏起来慢慢研究，希望以后能看懂~~~
代码如下，可以直接运行：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<style type="text/css">
<!--
body {text-align:center}
.icon td {width:50px;height:37px;background-image:url(http://www.zzsky.cn/effect/images/2008901080950.gif)}
.capt td {font:normal 11px verdana;padding:2px 0}
.a {background-position-y:0px}
.b {background-position-y:-37px}
.c {background-position-y:-74px}
.d {background-position-y:-111px}
.e {background-position-y:-148px}
.f {background-position-y:-185px}
.g {background-position-y:-222px}
.f1 {background-position-x:0px}
.f2 {background-position-x:-51px}
.f3 {background-position-x:-101px}
.f4 {background-position-x:-153px}
.f5 {background-position-x:-205px}
.f6 {background-position-x:-257px}
.f7 {background-position-x:-309px}
-->
</style>
<script language="javascript">
window.onload=function(){
var t=document.getElementsByTagName('table')[0];
var cs=t.rows[1].cells,ct=t.rows[0].cells;
for(var i=0;i<cs.length;i++)
cssAni(cs[i],ct[i],7);
}
function cssAni(osrc,otarget,num,duration){
var t=null,c=1,d=0,n=0,i=Math.floor((duration||300)/num);
var s=otarget.className.replace(/.$/,''),r=/over/;
osrc.onmouseover=osrc.onmouseout=function(e){
n=r.test((e||event).type)?1:-1;
if(!t) t=setInterval(function(){
if((c==1||c==num)&&((d==n||c+n<1)||!(d=n)))
return clearInterval(t),t=null;
otarget.className=s+(c+=d);
},i);
};
}
</script>
</head>
<body>
<table>
<tr class="icon">
<td class="a f1"></td>
<td class="b f1"></td>
<td class="c f1"></td>
<td class="d f1"></td>
<td class="e f1"></td>
<td class="f f1"></td>
<td class="g f1"></td>
</tr>
<tr class="capt">
<td><a href="#">A</a></td>
<td><a href="#">B</a></td>
<td><a href="#">C</a></td>
<td><a href="#">D</a></td>
<td><a href="#">E</a></td>
<td><a href="#">F</a></td>
<td><a href="#">G</a></td>
</tr>
</table>
</body>
</html>