<!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>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script>
$(function(){
$("input").click(function(){
$("img:lt(" + $(this).attr("value") + ")").css("width","200px");
$("img:eq(" + $(this).attr("value") + ")").css("width","300px");
$("img:gt(" + $(this).attr("value") + ")").css("width","200px");
});
});
</script>
</head>
<body>
<p>
<input type="button" value="0">
<input type="button" value="1">
<input type="button" value="2">
<input type="button" value="3">
<input type="button" value="4">
</p>
<img src="img/image1.png">
<img src="img/image2.png">
<img src="img/image3.png">
<img src="img/image4.png">
<img src="img/image5.png">
</body>
</html>