function writeDateInfo()
{
        var day="";
        var month="";
        var ampm="";
        var ampmhour="";
        var myweekday="";
        var year="";
        mydate=new Date();
        myweekday=mydate.getDay();
        mymonth=mydate.getMonth()+1;
        myday= mydate.getDate();
        myyear= mydate.getYear();
        year=(myyear > 200) ? myyear : 1900 + myyear;
        if(myweekday == 0)
        weekday=" 星期日";
        else if(myweekday == 1)
        weekday=" 星期一";
        else if(myweekday == 2)
        weekday=" 星期二";
        else if(myweekday == 3)
        weekday=" 星期三";
        else if(myweekday == 4)
        weekday=" 星期四";
        else if(myweekday == 5)
        weekday=" 星期五";
        else if(myweekday == 6)
        weekday=" 星期六";
        document.write(year+"年"+mymonth+"月"+myday+"日"+weekday);
}  

用的时候如下：

<table><tr><td>writeDateInfo()</td></tr></table>