//WebSite:http://hi.baidu.com/bit5566
function startTime(){
    var today=new Date();//定义一个时间对象
    var y=today.getYear();//年
    var mon=checkTime(today.getMonth()+1);//月
    var d=checkTime(today.getDate());//日
    var weekday=' 星期'+'日一二三四五六'.charAt(today.getDay());//星期
    var h=checkTime(today.getHours());//时
    var m=checkTime(today.getMinutes());//分
    var s=checkTime(today.getSeconds());//秒
    document.getElementById('time').innerHTML=y + "年" + mon + "月" + d + "日" + weekday;//在层time中显示
}
function checkTime(i){
    if (i<10)
        i="0" + i
    return i
}
startTime();
setInterval(startTime,1000);