<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="js/jquery-1.7.2.min.js"></script>
<title></title>
<style type="text/css">
.div1 {
position: relative;
width: 100px;
height: 50px;
background-color: red;
float: left;
margin-left: 20px;
}
.div2 {
position: absolute;
width: 100%;
height: 0px;
top: 50px;
background-color: green;
}
</style>
</head>
<body>
<div class="div1">
<div class="div2"></div>
</div>
<div class="div1">
<div class="div2"></div>
</div>
<div class="div1">
<div class="div2"></div>
</div>
<div class="div1">
<div class="div2"></div>
</div>
<div class="div1">
<div class="div2"></div>
</div>
</body>
</html>
<script type="text/javascript">
$(".div1").hover(
function () {
var aaa = $(this).children(".div2:eq(0)");
aaa.stop().animate({ height: "300px" }, 500)
},
function () {
var aaa = $(this).children(".div2:eq(0)");
aaa.stop().animate({ height: "0px" }, 500)
}
);
</script>
