function  visitor()
{
//define variable
 var Jsay;
 var Jdayr;
 var  Jtoday= new Date();
 var  Jyear= Jtoday.getYear(); Jmonth=Jtoday.getMonth();
         Jday= Jtoday.getDay();  Jdate=Jtoday.getDate();
         Jhrs= Jtoday.getHours(); Jmin=Jtoday.getMinutes();
          Jsec=Jtoday.getSeconds();   
document.write("");

  document.write((Jyear)+""+"年"+"" );
  document.write((Jmonth+1));
  document.write(""+"月"+""+Jdate+""+"日 "+"");       
if (Jday==1)
 document.write(""+"星期"+""+""+"一"+"");
else if (Jday==2) 
 document.write(""+"星期"+""+""+"二"+"");
else if (Jday==3) 
 document.write(""+"星期"+""+""+"三"+"");
else if (Jday==4) 
 document.write(""+"星期"+""+""+"四"+"");
else if (Jday==5) 
 document.write(""+"星期"+""+""+"五"+"");
else if (Jday==6) 
 document.write(""+"星期"+""+""+"六"+"");
else if (Jday==0) 
 document.write(""+"星期"+""+""+"日"+"");
}