<html>
<head>
<script type="text/javascript" src="jquery-1.4.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("#b01").click(function(){
$('#myDiv').load('http://www.baidu.com');
});
});
</script>
</head>
<body>
<div id="myDiv"><h2>Let AJAX change this text</h2></div>
<button id="b01" type="button">Change Content</button>
</body>
</html>