选项卡练习

<!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=gb2312" />
<title>无标题文档</title>
<style type="text/css">
#div1 .active{background:#FF0;}
#div1 div{200px;height:200px;background:#CCC;border:1px solid #999;display:none;}
</style>
<script type="text/javascript">
window.onload=function ()
{
var oDiv=document.getElementById('div1');
var aBtn=oDiv.getElementsByTagName('input');
var aDiv=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 >111</div>
<div>222</div>
<div>333</div>
<div>444</div>
</div>
</body>
</html>