<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN">
<html> <head>
</head>
<body>
<div style="position: relative; width: 200px; height: 200px; background-color: silver;"></div>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.10.2.min.js"></script>
<script type="text/javascript">
$('div').mouseover(function()
{
$(this).stop().animate(
{
top: 300
}, 1000);
}).mouseout(function()
{
$(this).stop().animate(
{
top: 0
}, 1000);
});
</script>
</body>
</html>