box" onclick="setSoundsEnabled(this.checked)" id="soundsEnabled">
    </p>

    <p>
      Stress test: &nbsp;
      <input type="button" value="Sprinkles!" onclick="sprinkles(100)">
      <input type="button" value="Spaghetti!" onclick="spaghetti(10)">
      <input type="button" value="Fake some drags!" onclick="fakeManyDrags()">
    </p>

    <p>
      Glows: &nbsp;
      <input type="button" value="Glow last clicked block" onclick="glowBlock()" />
      <input type="button" value="Unglow last clicked bloc