dayObj = new Date();
monthStr = dayObj.getMonth() + 1;
yearStr=dayObj.getYear();
document.write(" "+yearStr+"年"+monthStr+"月"+dayObj.getDate()+"日"+" "+" ");
if (dayObj.getDay()==1)  document.write("星期一 ");
if (dayObj.getDay()==2)  document.write("星期二 ");
if (dayObj.getDay()==3)  document.write("星期三 ");
if (dayObj.getDay()==4)  document.write("星期四 ");
if (dayObj.getDay()==5)  document.write("星期五 ");
if (dayObj.getDay()==6)  document.write("星期六 ");
if (dayObj.getDay()==0)  document.write("星期日 ");