Live Countdown

countdown.js

<script type="text/javascript">
	var end = new Date('6 Oct 2011 23:59:59'); // Timer Expiration

	var _second = 1000;
	var _minute = _second * 60;
	var _hour = _minute * 60;
	var _day = _hour *24;
	var timer;

	function showRemaining() {

		function zeroPad(num, places) {
		  var zero = places - num.toString().length + 1;
		  return Array(+(zero > 0 && zero)).join("0") + num;
		}

	    var now = new Date();
	
	    var distance = end - now;
	    if (distance < 0 ) {
	       // handle expiry here..
	       clearInterval( timer ); // stop the timer from continuing ..
	       return; // break out of the function so that we do not update the counters with negative values..
	    }
	
	    var days = Math.floor(distance / _day);
	    var hours = Math.floor( (distance % _day ) / _hour );
	    var minutes = Math.floor( (distance % _hour) / _minute );
	    var seconds = Math.floor( (distance % _minute) / _second );

		days = zeroPad(days, 2);
		hours = zeroPad(hours, 2);
		minutes = zeroPad(minutes, 2);
		seconds = zeroPad(seconds, 2);

	    // Change this selector to use the ID of the element you want the countdown in.
	    document.getElementById('countdown').innerHTML = '' + days + ':' + hours + ':' + minutes + ':' + seconds;
	}

	timer = setInterval(showRemaining, 1000);
</script>