<!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:button").click(function(){
$("input:checkbox").removeAttr("checked");
});
});
</script>
</head>
<body>
<input type="checkbox" id="html" name="" value="1" checked><label for="html">HTML</label>
<input type="checkbox" id="css" name="" value="2" checked><label for="css">CSS</label>
<input type="checkbox" id="javascript" name="" value="3" checked><label for="javascript">JavaScript</label>
<input type="checkbox" id="php" name="" value="4" checked><label for="php">PHP</label>
<input type="checkbox" id="mysql" name="" value="5" checked><label for="mysql">MySQL</label>
<input type="button" value="リセット">
</body>
</html>