<!DOCTYPE html>
<html lang="ja-JP">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,user-scalable=yes,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.5">
<title></title>
<link rel="stylesheet" href="css/ad.css" media="all" />
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script type="text/javascript">
$(function(){
$("a").click(function(){
$("img").attr("src",$(this).attr("href"));
$("h1").text($(this).text());
return false;
});
});
</script>
</head>
<body>
<h1>変更前</h1>
<p>
<a href="img/before.png">変更前</a>
<a href="img/after.png">変更後</a>
</p>
<img src="img/before.png">
</body>
</html>