function DisplayHello(){
	var d, year, month, day, hour, s="";
	d = new Date();
	year = d.getFullYear();
	month = d.getMonth();
	month = month + 1;
	day = d.getDate();
	hour = d.getHours();
	switch (hour){
		case 24:
		case 0:		
		case 1:
		case 2:
		case 3:
		case 4:
		case 5: s += "您好，"; break;
		case 6:
		case 7:
		case 8:
		case 9: s += "早上好，";break;
		case 10:
		case 11:
		case 12: s += "上午好，"; break;
		case 13:
		case 14:
		case 15:
		case 16:
		case 17:
		case 18: s += "下午好，"; break;
		case 19:
		case 20:
		case 21:
		case 22:
		case 23: s += "晚上好，"; break;
		default: s += "您好，"; break;
	}
	s += "今天是"+ year +"年"+ month +"月"+ day +"日";
	if (month==6 && day==20) s += " 谨祝天下所有为父者和将为父者，父亲节快乐！";
	if (month==9 && day==10) s += " 谨祝天下所有辛勤的园丁：教师节快乐！";
	if (month==9 && day==28) s += " 中秋节快乐！合家团圆！";
	if (month==10 && day==1) s += " 国庆节快乐！愿祖国繁荣昌盛！";
	if (month==12 && day==25) s += " 圣诞节快乐！Merry Christmas!";	
	if (month==5 && day==9) s += " 祝天下所有的母亲身体健康，生活幸福！";
	if (month==6 && day==22) s += " 每逢佳节倍思亲，祝你端午节平安快乐！";
	if (month==6 && day==1) s += " 祝小朋友六一节快乐！身体健康！";
	if (month==12 && day==24) s += " 圣诞的铃声已经摇响，亲爱的朋友们：平安夜快乐！";
	
	// return s;
	document.all.hh.innerText=s;
}