(() => {
  function CountDown() {
      var count = 5, tmID, infobox = document.getElementById("start"), time = document.getElementById("info"), atari = document.getElementById("correct");
    function countDown() {
	if (--count == 0) {
	    time.innerHTML = "残念、時間切れです。";
	} else {
	    time.innerHTML = count + "秒前";
	    tmID = setTimeout(countDown, 1000);
	}
    }
    function startCountDown() {
	tmID = setTimeout(countDown, 1000);
	infobox.removeEventListener("click", startCountDown, false);
	atari.addEventListener("click", stopCountDown, false);
    }
    function stopCountDown() {
	clearTimeout(tmID);
	time.innerHTML = "おめでとう"
	atari.innerHTML = "正解!!";
	atari.removeEventListener("click", stopCountDown, false);
    }
    infobox.addEventListener("click", startCountDown, false);
  }
  document.addEventListener("DOMContentLoaded", CountDown, false);
})();