<!DOCTYPE>
<html>
<head>
<script src="http://code.jquery.com/jquery-1.8.2.min.js"></script>

	<script language="Javascript" type="text/javascript" src="http://www.littlewebthings.com/projects/countdown/example/js/jquery.lwtCountdown-0.9.5.js"></script>
</head>
<body>
<div id="countdown_dashboard">
			<div class="dash weeks_dash">
				<span class="dash_title">weeks</span>
				<div class="digit"></div>
				<div class="digit"></div>
			</div>

			<div class="dash days_dash">
				<span class="dash_title">days</span>
				<div class="digit"></div>
				<div class="digit"></div>
			</div>

			<div class="dash hours_dash">
				<span class="dash_title">hours</span>
				<div class="digit"></div>
				<div class="digit"></div>
			</div>

			<div class="dash minutes_dash">
				<span class="dash_title">minutes</span>
				<div class="digit"></div>
				<div class="digit"></div>
			</div>

			<div class="dash seconds_dash">
				<span class="dash_title">seconds</span>
				<div class="digit"></div>
				<div class="digit"></div>
			</div>

		</div>
<script language="javascript" type="text/javascript">
			jQuery(document).ready(function() {
				$('#countdown_dashboard').countDown({
					targetDate: {
						'day': 		31,
						'month': 	12,
						'year': 	2012,
						'hour': 	22,
						'min': 		0,
						'sec': 		0					}
				});
				
				
			});
		</script>

</body>
</html>
sayfana jquery kütüphanesinide eklemen gerek
son satırdaki
targetDate: {
						'day': 		31,
						'month': 	12,
						'year': 	2012,
						'hour': 	22,
						'min': 		0,
						'sec': 		0
kısımdan geri sayılıcak hedef tarihi ayarlıyabilirsin