js-- 农历的获取

today=new Date();  
function initArray(){  
   this.length=initArray.arguments.length  
   for(var i=0;i<this.length;i++)  
   this[i+1]=initArray.arguments[i] }  
   var d=new initArray(  
     "星期日",  
     "星期一",  
     "星期二",  
     "星期三",  
     "星期四",  
     "星期五",  
     "星期六");  
document.write(today.getFullYear(),"年",today.getMonth()+1,"月",today.getDate(),"日 ",d[today.getDay()+1]," ");  
  
calendar = new Date();  
month = calendar.getMonth();  
date = calendar.getDate();  
  
if ((month == 0) && (date == 1)) document.write("元旦");  
  
if ((month == 2) && (date == 12)) document.write("植树节");  
  
if ((month == 3) && (date == 5)) document.write("清明节");  
  
if ((month == 4) && (date == 1)) document.write("国际劳动节");  
  
if ((month == 4) && (date == 4)) document.write("青年节");  
  
if ((month == 5) && (date == 1)) document.write("国际儿童节");  
  
if ((month == 7) && (date == 1)) document.write("建军节");  
  
if ((month == 7) && (date == 16)) document.write("七夕情人节");  
  
if ((month == 9) && (date == 1)) document.write("国庆节/国际音乐节/国际老人节");  
  
if ((month == 11) && (date == 24)) document.write("平安夜");  
if ((month == 11) && (date == 25)) document.write("圣诞节");  
  
  
  
  
/*农历部分*/  
  
var CalendarData=new Array(100);  
var madd=new Array(12);  
var tgString="甲乙丙丁戊己庚辛壬癸";  
var dzString="子丑寅卯辰巳午未申酉戌亥";  
var numString="一二三四五六七八九十";  
var monString="正二三四五六七八九十冬腊";  
var weekString="日一二三四五六";  
var sx="鼠牛虎兔龙蛇马羊猴鸡狗猪";  
var cYear,cMonth,cDay,TheDate;  
CalendarData = new Array(0xA4B,0x5164B,0x6A5,0x6D4,0x415B5,0x2B6,0x957,0x2092F,0x497,0x60C96,0xD4A,0xEA5,0x50DA9,0x5AD,0x2B6,0x3126E, 0x92E,0x7192D,0xC95,0xD4A,0x61B4A,0xB55,0x56A,0x4155B, 0x25D,0x92D,0x2192B,0xA95,0x71695,0x6CA,0xB55,0x50AB5,0x4DA,0xA5B,0x30A57,0x52B,0x8152A,0xE95,0x6AA,0x615AA,0xAB5,0x4B6,0x414AE,0xA57,0x526,0x31D26,0xD95,0x70B55,0x56A,0x96D,0x5095D,0x4AD,0xA4D,0x41A4D,0xD25,0x81AA5,0xB54,0xB6A,0x612DA,0x95B,0x49B,0x41497,0xA4B,0xA164B, 0x6A5,0x6D4,0x615B4,0xAB6,0x957,0x5092F,0x497,0x64B, 0x30D4A,0xEA5,0x80D65,0x5AC,0xAB6,0x5126D,0x92E,0xC96,0x41A95,0xD4A,0xDA5,0x20B55,0x56A,0x7155B,0x25D,0x92D,0x5192B,0xA95,0xB4A,0x416AA,0xAD5,0x90AB5,0x4BA,0xA5B, 0x60A57,0x52B,0xA93,0x40E95);  
madd[0]=0;  
madd[1]=31;  
madd[2]=59;  
madd[3]=90;  
madd[4]=120;  
madd[5]=151;  
madd[6]=181;  
madd[7]=212;  
madd[8]=243;  
madd[9]=273;  
madd[10]=304;  
madd[11]=334;  
  
function GetBit(m,n){  
return (m>>n)&1;  
}  
function e2c(){  
TheDate= (arguments.length!=3) ? new Date() : new Date(arguments[0],arguments[1],arguments[2]);  
var total,m,n,k;  
var isEnd=false;  
var tmp=TheDate.getYear();  
if(tmp<1900){  
   tmp+=1900;  
}  
total=(tmp-1921)*365+Math.floor((tmp-1921)/4)+madd[TheDate.getMonth()]+TheDate.getDate()-38;  
  
if(TheDate.getYear()%4==0&&TheDate.getMonth()>1) {  
   total++;  
}  
for(m=0;;m++){  
   k=(CalendarData[m]<0xfff)?11:12;  
   for(n=k;n>=0;n--){  
    if(total<=29+GetBit(CalendarData[m],n)){  
     isEnd=true; break;  
    }  
    total=total-29-GetBit(CalendarData[m],n);  
   }  
   if(isEnd) break;  
}  
cYear=1921 + m;  
cMonth=k-n+1;  
cDay=total;  
if(k==12){  
   if(cMonth==Math.floor(CalendarData[m]/0x10000)+1){  
    cMonth=1-cMonth;  
   }     
   if(cMonth>Math.floor(CalendarData[m]/0x10000)+1){  
    cMonth--;  
   }    
}  
}  
  
function GetcDateString(){  
var tmp="";  
tmp+=tgString.charAt((cYear-4)%10);  
tmp+=dzString.charAt((cYear-4)%12);  
tmp+="(";  
tmp+=sx.charAt((cYear-4)%12);  
tmp+=")年 ";  
if(cMonth<1){  
   tmp+="(闰)";  
   tmp+=monString.charAt(-cMonth-1);  
}else{  
   tmp+=monString.charAt(cMonth-1);  
}  
tmp+="月";  
tmp+=(cDay<11)?"初":((cDay<20)?"十":((cDay<30)?"廿":"三十"));  
if (cDay%10!=0||cDay==10){  
   tmp+=numString.charAt((cDay-1)%10);  
}  
return tmp;  
}  
  
function GetLunarDay(solarYear,solarMonth,solarDay){  
//solarYear = solarYear<1900?(1900+solarYear):solarYear;  
if(solarYear<1921 || solarYear>2020){  
return "";  
}else{  
   solarMonth = (parseInt(solarMonth)>0) ? (solarMonth-1) : 11;  
   e2c(solarYear,solarMonth,solarDay);  
   return GetcDateString();  
}  
}  
  
var D=new Date();  
var yy=D.getFullYear();  
var mm=D.getMonth()+1;  
var dd=D.getDate();  
var ww=D.getDay();  
var ss=parseInt(D.getTime() / 1000);  
if (yy<100) yy="19"+yy;  
function showCal(){  
document.write(GetLunarDay(yy,mm,dd));  
}   
  
showCal();