Date00 = new Date(2000,0,2);
todayDate = new Date();
date = todayDate.getDate();
month= todayDate.getMonth()+1;
year= todayDate.getYear();
if(year<1900) year+=1900;
document.write("&nbsp;");
document.write(year);
document.write("年");
document.write(month);
document.write("月");
document.write(date);
document.write("日");
document.write(" ");
document.write("星期");
cdays=Math.floor((todayDate-Date00)/86400000);
wk=cdays % 7;
switch(wk){
  case 0:
    document.write("日");
    break;
  case 1:
    document.write("一");
    break;
  case 2:
    document.write("二");
    break;
  case 3:
    document.write("三");
    break;
  case 4:
    document.write("四");
    break;
  case 5:
    document.write("五");
    break;
  case 6:
    document.write("六");
    break;
}