<!DOCTYPE html>
<html >
<head>
<meta charset="utf-8">
<title></title>
</head>
<style>
#s1 .active{background: red;}
#s1 div{
210px;
height: 200px;
background: gray;
border: 1px solid greenyellow;
display: none;
}
</style>
<script>
window.onload=function(){
var oDiv=document.getElementById("s1");
var aBtn=oDiv.getElementsByTagName('input');
var aDiv=oDiv.getElementsByTagName('div');
for(var i=0;i<aBtn.length;i++){
aBtn[i].index=i;
aBtn[i].onmousemove=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>
<body>
<div id="s1">
<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;">11</div>
<div >22</div>
<div >33</div>
<div >44</div>
</div>
</body>
</html>