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); }