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              <h3>2017年 もっともブレイクしたと思う芸人ベスト3投票</h3>
<p><input type="checkbox" name="geinin[]" value="ブルゾン">ブルゾンちえみ</p>
<p><input type="checkbox" name="geinin[]" value="サンシャイン">サンシャイン池崎</p>
<p><input type="checkbox" name="geinin[]" value="アキラ">アキラ100%</p>
<p><input type="checkbox" name="geinin[]" value="ゆりやん">ゆりやんレトリィバァ</p>
<p><input type="checkbox" name="geinin[]" value="ノラ">平野ノラ</p>
<p><input type="checkbox" name="geinin[]" value="銀シャリ">銀シャリ</p>
<p><input type="checkbox" name="geinin[]" value="ジョニ男">岩井ジョニ男</p>
<p><input type="checkbox" name="geinin[]" value="カミナリ">カミナリ
<p><input type="checkbox" name="geinin[]" value="尼神">尼神インター</p>
<p><input type="checkbox" name="geinin[]" value="タイムマシーン">タイムマシーン3号</p>
              $(function() {
  $('input[name="geinin[]"]').change(function() {
    // チェックが入った個数を変数に格納
    var topthree = $('input[name="geinin[]"]:checked').length;
    // チェックが3つ以上入ったら
    if (topthree >= 3) {
      // disabledを付ける
      $('input[name="geinin[]"]').not(':checked').attr('disabled', 'disabled');
    // チェックが3つ未満だったら
    } else {
      // disabledを削除
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