asp.net 中实时显示本地时间

<script src="js/jquery-1.7.2.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(function(){
var clock = clockon();
     $("#bgclock").html(clock);
});

// 本地时钟
function clockon() {
var now = new Date();
var year = now.getFullYear();
var month = now.getMonth();
var date = now.getDate();
var day = now.getDay();
var hour = now.getHours();
var minu = now.getMinutes();
var sec = now.getSeconds();
var week;
month = month + 1;
if (month < 10)
month = "0" + month;
if (date < 10)
date = "0" + date;
if (hour < 10)
hour = "0" + hour;
if (minu < 10)
minu = "0" + minu;
if (sec < 10)
sec = "0" + sec;
var arr_week = new Array("星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六");
week = arr_week[day];
var time = "";
time = year + "年" + month + "月" + date + "日" + " " + hour + ":" + minu
+ ":" + sec + " " + week;
var timer = setTimeout("clockon()", 200);
}
</script>

 <div class="footer" id="bgclock">
 </div>