70 second countdown timer

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Countdown Timer</title>
<meta name="keywords" content="keyword1, keyword2, keyword3"/>
<meta name="description" content="Description Here"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js" type="text/javascript"></script>
<style type="text/css">
<!--
body {
	margin: 0px;
}
p {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 15px;
	line-height: 18px;
}
-->
</style>
</head>
<!--Website Design by Plusminisites.com-->
<body>
<script type="text/javascript">
jQuery(document).ready(function() {
	var sec = 70;

	function formatTime(s) {
	    var m = Math.floor(s/60); //Get remaining minutes
	    s -= m*60;
	    return (m < 10 ? m : m)+":"+(s < 10 ? '0'+s : s); //zero padding on minutes and seconds
	}

	var timer = setInterval(function() {
		var count = sec--;
		$("#mdtimer span").text(formatTime(count));
		if (sec == 0) {
			$("#makingdifferenttimer").delay(1000).fadeIn(1000);
			$("#mdtimer").hide(1000) .fadeOut(fast);
		}
	}, 1000);

});
</script>
<center>
<a class="button" href="http://www.downloadlink.com/" id="makingdifferenttimer" rel="nofollow" style="display: none;" target="_blank">Download</a>
</center>
<div id="mdtimer">
<div style="font-size: large; text-align: center;">
<b>Please Wait <span>1:10</span> seconds</b></div>
</div>
</body>
</html>