为何JS编码无错,IE8浏览器无反映?新人请教

<!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>
<style>
#div1.active {background:yellow;}
#div1 div {width:200px; height:200px; background:#ccc; border:1px;
solid #999;display:none;}
</style>
<script>
window .alond=function ()
{
var oDiv=document.getElementById('div1');
var aBtn=oDiv.getElementsByTagName('input');
var aBtn=oDiv.getElementsByTagName('div');

for(var i=0; i<aBtn.length; i++)
{
aBtn[i].index=i;
aBtn[i].onclick=function ()
{
for(var i=0; i<aBtn.length;i++)
{
aBtn[i].className='';
aDiv[i].style.display='none';
}
this.className='active';
aDiv[this.index].style.display='block';
};
};

};
</script>
</head>
<body>
<div id="div1">
<input class="active" type="button" value="教育"/>
<input type="button" value="培训"/>
<input type="button" value="招生"/>
<input type="button" value="出国"/>
<div style="display:block;">11111</div>
<div>22222</div>
<div>33333</div>
<div>44444</div>
</div>
</body>
</html>

<div>1111可以显示,其余<div>2.3.4.按纽不能点击选项转换显示.是不是浏览器的问题还是编码有问题?