function ticktack() {
today = new Date();
Hours = today.getHours();
Minutes = today.getMinutes();
Seconds = today.getSeconds();
if (Minutes < 10) { Minutes = "0"+Minutes; }
if (Seconds < 10) { Seconds = "0"+Seconds; }
Clock.innerHTML = Hours + ':' + Minutes + ':' + Seconds;
setTimeout("ticktack();", 100);}