function define(){ var count = 3; var info = getElementById("info"); var clear = getElementById("clear"); var divbox = getElementsByTagName("div") var start = getElementById("start") start.addEventListener("click",define,false) function startCountDown(){ infobox.innerHTML = "" start.addEventListener("click",startCountDown,false) } function countdown(){ if (count-- == 0){ info.innerHTML = "生殺与奪の権を他人に握らせるな!"; } else{ info.innerHTML = count +"秒前" setTimeout("countdown",1000); } } function stopCountDown(){ divbox.removeEventListener("click",startCountDown,false) } }