jquery实现时间走动

 function getdates() {
            var w_array = new Array("星期天", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六");
            var d = new Date();
            var year = d.getFullYear();
            var month = d.getMonth() + 1;
            var day = d.getDate();
            var week = d.getDay();
            var h = d.getHours();
            var mins = d.getMinutes();
            var s = d.getSeconds();

            if (month < 10) month = "0" + month;
            if (day < 10) day = "0" + day;
            if (h < 10) h = "0" + h;
            if (mins < 10) mins = "0" + mins;
            if (s < 10) s = "0" + s;

            var shows = "现在时间是： <span>" + year + "-" + month + "-" + day + " " + h + ":" + mins + ":" + s + " " +             w_array[week] + "</span>";
            document.getElementById("date").innerHTML = shows;
            setTimeout("getdates()",1000);
        }