<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
.one{
background-color: lightcyan;
width: 80px;
height: 30px;
border: 1px solid lightcyan;
float: left;
padding-bottom: 20px;
margin: 5px;
text-align: center;
line-height: 30px;
}
.one:hover{
cursor: pointer;
}
.two{
background-color: blue;
width: 1000px;
}
</style>
</head>
<body>
<div id="">
<div class="one" onmouseover="aa(this)">栏目一</div>
<div class="one" onmouseover="aa(this)">栏目二</div>
<div class="one" onmouseover="aa(this)">栏目三</div>
<div class="one" onmouseover="aa(this)">栏目四</div>
<br />
<br />
<br />
<div class="two">
</div>
</div>
</body>
</html>
<script type="text/javascript">
function aa(a){
var two = document.getElementsByClassName("two")[0];
two.innerHTML = "";
for(var i = 0;i < 4; i++){
two.innerHTML += a.innerHTML + "的内容<br/>";
}
}
</script>
