时钟效果的实现

Question

<div id="div1">&nbsp;
</div>
<script language=javascript>
function showTime()
{
var mydate= new Date();
var myyear=mydate.getYear();
var mymonth=mydate.getMonth();
var myday=mydate.getDate();
var myweekday=mydate.getDay();
var myhour=mydate.getHours();
var myminute=mydate.getMinutes();
                  var mysecond=mydate.getSeconds();
var str1=myhour+"时"+myminute+"分"+mysecond+"秒";
document.getElementById("div1").innerText=(str1);
setTimeout("showTime()",1000);
}
showTime()
</script>