nt=new Date( );         
 if(nt.getHours()<6)                    
      welcomestring="凌晨好！";  else if(nt.getHours()<9) welcomestring="早上好！";  else if(nt.getHours()<12)   welcomestring="上午好！";   else if(nt.getHours()<14) welcomestring="中午好！";  else if(nt.getHours()<17) welcomestring="下午好！"; else if(nt.getHours()<19)  welcomestring="傍晚好！";  else if(nt.getHours()<22) welcomestring="晚上好！"; else welcomestring="夜里好！";        
                         
arrayday=["日" , "一" , "二" , "三" , "四" , "五" , "六" ];                          
document.write(nt.getYear()+"年"+(nt.getMonth()+1) + "月" + nt.getDate() + "日&nbsp;");                          
document.write("星期" + arrayday[nt.getDay()] +"&nbsp;");                          
document.write(welcomestring)