(function () { function checkTime(i) { return (i < 10) ? "0" + i : i; } function startTime() { var today = new Date(), h = checkTime(today.getHours()), m = checkTime(today.getMinutes()), s = checkTime(today.getSeconds()); document.getElementById('time').innerHTML = h + ":" + m; document.getElementById('time-2').innerHTML = ( h - 6 ) + ":" + m; document.getElementById('time-3').innerHTML = ( h - 9 ) + ":" + m; document.getElementById('time-4').innerHTML = ( h - 1 ) + ":" + m; t = setTimeout(function () { startTime() }, 500); } startTime(); })();