各位大侠帮帮忙吧
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script language="javascript">
function atest(thisobj){
var ok=document.getElementById("a").scrollTop;
var alldiv=document.getElementsByTagName("yes");
for(var i=0;i<=alldiv.length;i++){
if(alldiv[i]!=ok){
alldiv[i].scrollTop=ok;
}
}
}
</script>
<style type="text/css">
.a{ position:absolute; height:150px; overflow:auto; overflow-y:auto; left: 406px; top: 2px;}
.b{ position:absolute; height:150px; overflow:auto; overflow-y:auto; top: 2px; }
.c{ position:absolute; height:150px; overflow:auto; overflow-y:auto; left: 199px; top: 2px; }
</style>
</head>
<body>
<div >
<div class="a" onscroll="atest(this)" id="a" name="a">
<p>ppppppppppppppppppppppppp</p>
<p>ppppppppppppppppppppppppp </p>
<p>ppppppppppppppppppppppppp </p>
<p>ppppppppppppppppppppppppp </p>
<p>ppppppppppppppppppppppppp </p>
<p>ppppppppppppppppppppppppp </p>
<p>ppppppppppppppppppppppppp </p>
<p>ppppppppppppppppppppppppp </p>
</div>
<div class="b" id="yes" name="yes">
<p>aaaaaaaaaaaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaa </p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaa </p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaa </p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaa </p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaa </p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaa </p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaa </p>
</div>
<div class="c" id="yes" name="yes">
<p>cccccccccccccccccccccccccc</p>
<p>cccccccccccccccccccccccccc </p>
<p>cccccccccccccccccccccccccc </p>
<p>cccccccccccccccccccccccccc </p>
<p>cccccccccccccccccccccccccc </p>
<p>cccccccccccccccccccccccccc </p>
<p>cccccccccccccccccccccccccc </p>
<p>cccccccccccccccccccccccccc </p>
</div>
</div>
</body>
</html>
JS这部分代码究竟哪里出错了呀？？？？？
[解决办法]
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script type="text/javascript">
function atest(thisobj){
var ok=document.getElementById("a").scrollTop;
var alldiv=document.getElementsByTagName("div");
for(var i=0;i<alldiv.length;i++){
if(alldiv[i].scrollTop!=ok){
alldiv[i].scrollTop=ok;
}
}
}
</script>
<style type="text/css">
.a{ position:absolute; height:150px; overflow:auto; overflow-y:auto; left: 406px; top: 2px;}
.b{ position:absolute; height:150px; overflow:auto; overflow-y:auto; top: 2px; }
.c{ position:absolute; height:150px; overflow:auto; overflow-y:auto; left: 199px; top: 2px; }
</style>
</head>
<body>
<div >
<div class="a" onscroll="atest(this)" id="a" name="a">
<p>ppppppppppppppppppppppppp</p>
<p>ppppppppppppppppppppppppp </p>
<p>ppppppppppppppppppppppppp </p>
<p>ppppppppppppppppppppppppp </p>
<p>ppppppppppppppppppppppppp </p>
<p>ppppppppppppppppppppppppp </p>
<p>ppppppppppppppppppppppppp </p>
<p>ppppppppppppppppppppppppp </p>
</div>
<div class="b" id="yes" name="yes">
<p>aaaaaaaaaaaaaaaaaaaaaaaaa</p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaa </p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaa </p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaa </p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaa </p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaa </p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaa </p>
<p>aaaaaaaaaaaaaaaaaaaaaaaaa </p>
</div>
<div class="c" id="yes" name="yes">
<p>cccccccccccccccccccccccccc</p>
<p>cccccccccccccccccccccccccc </p>
<p>cccccccccccccccccccccccccc </p>
<p>cccccccccccccccccccccccccc </p>
<p>cccccccccccccccccccccccccc </p>
<p>cccccccccccccccccccccccccc </p>
<p>cccccccccccccccccccccccccc </p>
<p>cccccccccccccccccccccccccc </p>
</div>
</div>
</body>
</html>
不要这样的粗心啊