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/*****************************************************************************
                                   日期资料
*****************************************************************************/

var lunarInfo=new Array(
0x4bd8,0x4ae0,0xa570,0x54d5,0xd260,0xd950,0x5554,0x56af,0x9ad0,0x55d2,
0x4ae0,0xa5b6,0xa4d0,0xd250,0xd255,0xb54f,0xd6a0,0xada2,0x95b0,0x4977,
0x497f,0xa4b0,0xb4b5,0x6a50,0x6d40,0xab54,0x2b6f,0x9570,0x52f2,0x4970,
0x6566,0xd4a0,0xea50,0x6a95,0x5adf,0x2b60,0x86e3,0x92ef,0xc8d7,0xc95f,
0xd4a0,0xd8a6,0xb55f,0x56a0,0xa5b4,0x25df,0x92d0,0xd2b2,0xa950,0xb557,
0x6ca0,0xb550,0x5355,0x4daf,0xa5b0,0x4573,0x52bf,0xa9a8,0xe950,0x6aa0,
0xaea6,0xab50,0x4b60,0xaae4,0xa570,0x5260,0xf263,0xd950,0x5b57,0x56a0,
0x96d0,0x4dd5,0x4ad0,0xa4d0,0xd4d4,0xd250,0xd558,0xb540,0xb6a0,0x95a6,
0x95bf,0x49b0,0xa974,0xa4b0,0xb27a,0x6a50,0x6d40,0xaf46,0xab60,0x9570,
0x4af5,0x4970,0x64b0,0x74a3,0xea50,0x6b58,0x5ac0,0xab60,0x96d5,0x92e0,
0xc960,0xd954,0xd4a0,0xda50,0x7552,0x56a0,0xabb7,0x25d0,0x92d0,0xcab5,
0xa950,0xb4a0,0xbaa4,0xad50,0x55d9,0x4ba0,0xa5b0,0x5176,0x52bf,0xa930,
0x7954,0x6aa0,0xad50,0x5b52,0x4b60,0xa6e6,0xa4e0,0xd260,0xea65,0xd530,
0x5aa0,0x76a3,0x96d0,0x4afb,0x4ad0,0xa4d0,0xd0b6,0xd25f,0xd520,0xdd45,
0xb5a0,0x56d0,0x55b2,0x49b0,0xa577,0xa4b0,0xaa50,0xb255,0x6d2f,0xada0,
0x4b63,0x937f,0x49f8,0x4970,0x64b0,0x68a6,0xea5f,0x6b20,0xa6c4,0xaaef,
0x92e0,0xd2e3,0xc960,0xd557,0xd4a0,0xda50,0x5d55,0x56a0,0xa6d0,0x55d4,
0x52d0,0xa9b8,0xa950,0xb4a0,0xb6a6,0xad50,0x55a0,0xaba4,0xa5b0,0x52b0,
0xb273,0x6930,0x7337,0x6aa0,0xad50,0x4b55,0x4b6f,0xa570,0x54e4,0xd260,
0xe968,0xd520,0xdaa0,0x6aa6,0x56df,0x4ae0,0xa9d4,0xa4d0,0xd150,0xf252,
0xd520);

var lmonthName = new Array('□','正','二','三','四','五','六','七','八','九','十','十一','十二');

var solarMonth=new Array(31,28,31,30,31,30,31,31,30,31,30,31);
var Gan=new Array("甲","乙","丙","丁","戊","己","庚","辛","壬","癸");
var Zhi=new Array("子","丑","寅","卯","辰","巳","午","未","申","酉","戌","亥");
var Animals=new Array("鼠","牛","虎","兔","龙","蛇","马","羊","猴","鸡","狗","猪");
var solarTerm = new Array("小寒","大寒","立春","雨水","惊蛰","春分","清明","谷雨","立夏","小满","芒种","夏至","小暑","大暑","立秋","处暑","白露","秋分","寒露","霜降","立冬","小雪","大雪","冬至");
var sTermInfo = new Array(0,21208,42467,63836,85337,107014,128867,150921,173149,195551,218072,240693,263343,285989,308563,331033,353350,375494,397447,419210,440795,462224,483532,504758);
var nStr1 = new Array('日','一','二','三','四','五','六','七','八','九','十');
var nStr2 = new Array('初','十','廿','卅','□');

//农历节日
var lFtv = new Array(
"0101*春节",
"0115 元宵节",
"0202 龙抬头节",
"0323 妈祖生辰 (天上圣母诞辰)",
"0505 端午节",
"0707 七七中国情人节",
"0815 中秋节",
"0909 重阳节",
"1208 腊八节",
"1223 腊八节",
"0100*除夕");



/*****************************************************************************
                                      日期计算
*****************************************************************************/

//====================================== 返回农历 y年的总天数
function lYearDays(y) {
 var i, sum = 348;
 for(i=0x8000; i>0x8; i>>=1) sum += (lunarInfo[y-1900] & i)? 1: 0;
 return(sum+leapDays(y));
}

//====================================== 返回农历 y年闰月的天数
function leapDays(y) {
 if(leapMonth(y)) return( (lunarInfo[y-1899]&0xf)==0xf? 30: 29);
 else return(0);
}

//====================================== 返回农历 y年闰哪个月 1-12 , 没闰返回 0
function leapMonth(y) {
 var lm = lunarInfo[y-1900] & 0xf;
 return(lm==0xf?0:lm);
}

//====================================== 返回农历 y年m月的总天数
function monthDays(y,m) {
 return( (lunarInfo[y-1900] & (0x10000>>m))? 30: 29 );
}


//====================================== 算出农历, 传入日期控件, 返回农历日期控件
//                                       该控件属性有 .year .month .day .isLeap
function Lunar(objDate) {

   var i, leap=0, temp=0;
   var offset   = (Date.UTC(objDate.getFullYear(),objDate.getMonth(),objDate.getDate()) - Date.UTC(1900,0,31))/86400000;

   for(i=1900; i<2100 && offset>0; i++) { temp=lYearDays(i); offset-=temp; }

   if(offset<0) { offset+=temp; i--; }

   this.year = i;

   leap = leapMonth(i); //闰哪个月
   this.isLeap = false;

   for(i=1; i<13 && offset>0; i++) {
      //闰月
      if(leap>0 && i==(leap+1) && this.isLeap==false)
         { --i; this.isLeap = true; temp = leapDays(this.year); }
      else
         { temp = monthDays(this.year, i); }

      //解除闰月
      if(this.isLeap==true && i==(leap+1)) this.isLeap = false;

      offset -= temp;
   }

   if(offset==0 && leap>0 && i==leap+1)
      if(this.isLeap)
         { this.isLeap = false; }
      else
         { this.isLeap = true; --i; }

   if(offset<0){ offset += temp; --i; }

   this.month = i;
   this.day = offset + 1;
}

//==============================返回公历 y年某m+1月的天数
function solarDays(y,m) {
   if(m==1)
      return(((y%4 == 0) && (y%100 != 0) || (y%400 == 0))? 29: 28);
   else
      return(solarMonth[m]);
}
//============================== 传入 offset 返回干支, 0=甲子
function cyclical(num) {
   return(Gan[num%10]+Zhi[num%12]);
}

//============================== 阴历属性
function calElement(sYear,sMonth,sDay,week,lYear,lMonth,lDay,isLeap,cYear,cMonth,cDay) {

      this.isToday    = false;
      //瓣句
      this.sYear      = sYear;   //公元年4位数字
      this.sMonth     = sMonth;  //公元月数字
      this.sDay       = sDay;    //公元日数字
      this.week       = week;    //星期, 1个中文
      //农历
      this.lYear      = lYear;   //公元年4位数字
      this.lMonth     = lMonth;  //农历月数字
      this.lDay       = lDay;    //农历日数字
      this.isLeap     = isLeap;  //是否为农历闰月?
      //八字
      this.cYear      = cYear;   //年柱, 2个中文
      this.cMonth     = cMonth;  //月柱, 2个中文
      this.cDay       = cDay;    //日柱, 2个中文

      this.color      = '';

      this.lunarFestival = ''; //农历节日
      this.solarFestival = ''; //公历节日
      this.solarTerms    = ''; //节气
}

//===== 某年的第n个节气为几日(从0小寒起算)
function sTerm(y,n) {
   var offDate = new Date( ( 31556925974.7*(y-1900) + sTermInfo[n]*60000  ) + Date.UTC(1900,0,6,2,5) );
   return(offDate.getUTCDate());
}




//============================== 返回阴历控件 (y年,m+1月)
/*
功能说明: 返回整个月的日期资料控件

使用方式: OBJ = new calendar(年,零起算月);

  OBJ.length      返回当月最大日
  OBJ.firstWeek   返回当月一日星期

  由 OBJ[日期].属性名称 即可取得各项值

  OBJ[日期].isToday  返回是否为今日 true 或 false

  其他 OBJ[日期] 属性参见 calElement() 中的注解
*/
function calendar(y,m) {

   var sDObj, lDObj, lY, lM, lD=1, lL, lX=0, tmp1, tmp2, tmp3;
   var cY, cM, cD; //年柱,月柱,日柱
   var lDPOS = new Array(3);
   var n = 0;
   var firstLM = 0;

   sDObj = new Date(y,m,1,0,0,0,0);    //当月一日日期

   this.length    = solarDays(y,m);    //公历当月天数
   this.firstWeek = sDObj.getDay();    //公历当月1日星期几

   ////////年柱 1900年立春后为庚子年(60进制36)
   if(m<2) cY=cyclical(y-1900+36-1);
   else cY=cyclical(y-1900+36);
   var term2=sTerm(y,2); //立春日期

   ////////月柱 1900年1月小寒以前为 丙子月(60进制12)
   var firstNode = sTerm(y,m*2) //返回当月「节」为几日开始
   cM = cyclical((y-1900)*12+m+12);

   //当月一日与 1900/1/1 相差天数
   //1900/1/1与 1970/1/1 相差25567日, 1900/1/1 日柱为甲戌日(60进制10)
   var dayCyclical = Date.UTC(y,m,1,0,0,0,0)/86400000+25567+10;

   for(var i=0;i<this.length;i++) {

      if(lD>lX) {
         sDObj = new Date(y,m,i+1);    //当月一日日期
         lDObj = new Lunar(sDObj);     //农历
         lY    = lDObj.year;           //农历年
         lM    = lDObj.month;          //农历月
         lD    = lDObj.day;            //农历日
         lL    = lDObj.isLeap;         //农历是否闰月
         lX    = lL? leapDays(lY): monthDays(lY,lM); //农历当月最后一天

         if(n==0) firstLM = lM;
         lDPOS[n++] = i-lD+1;
      }

      //依节气调整二月分的年柱, 以立春为界
      if(m==1 && (i+1)==term2) cY=cyclical(y-1900+36);
      //依节气月柱, 以「节」为界
      if((i+1)==firstNode) cM = cyclical((y-1900)*12+m+13);
      //日柱
      cD = cyclical(dayCyclical+i);

      //sYear,sMonth,sDay,week,
      //lYear,lMonth,lDay,isLeap,
      //cYear,cMonth,cDay
      this[i] = new calElement(y, m+1, i+1, nStr1[(i+this.firstWeek)%7],
                               lY, lM, lD++, lL,
                               cY ,cM, cD );
   }

   //节气
   tmp1=sTerm(y,m*2  )-1;
   tmp2=sTerm(y,m*2+1)-1;
   this[tmp1].solarTerms = solarTerm[m*2];
   this[tmp2].solarTerms = solarTerm[m*2+1];
   if(m==3) this[tmp1].color = 'red'; //清明颜色




   //农历节日
   for(i in lFtv)
      if(lFtv[i].match(/^(\d{2})(.{2})([\s\*])(.+)$/)) {
         tmp1=Number(RegExp.$1)-firstLM;
         if(tmp1==-11) tmp1=1;
         if(tmp1 >=0 && tmp1<n) {
            tmp2 = lDPOS[tmp1] + Number(RegExp.$2) -1;
            if( tmp2 >= 0 && tmp2<this.length && this[tmp2].isLeap!=true) {
               this[tmp2].lunarFestival += RegExp.$4 + ' ';
               if(RegExp.$3=='*') this[tmp2].color = 'red';
            }
         }
      }

}

//====================== 中文日期
function cDay(d){
   var s;

   switch (d) {
      case 10:
         s = '初十'; break;
      case 20:
         s = '二十'; break;
         break;
      case 30:
         s = '三十'; break;
         break;
      default :
         s = nStr2[Math.floor(d/10)];
         s += nStr1[d%10];
   }
   return(s);
}

///////////////////////////////////////////////////////////////////////////////

var Today = new Date();
var tY = Today.getFullYear();
var tM = Today.getMonth();
var tD = Today.getDate();

function showToday()
{


var SY=tY;
var SM=tM;
var cld;

  cld = new calendar(SY,SM);


   if(SY>1874 && SY<1909) yDisplay = '光绪' + (((SY-1874)==1)?'元':SY-1874);
   if(SY>1908 && SY<1912) yDisplay = '宣统' + (((SY-1908)==1)?'元':SY-1908);
   if(SY>1911 && SY<1950) yDisplay = '民国' + (((SY-1911)==1)?'元':SY-1911);
   if(SY>1948) yDisplay = '建国' + (((SY-1948)==1)?'元':SY-1948);
   var everything="";
  // everything=everything +  yDisplay +'年 ' + cyclical(SY-1900+36) + '年<br>【'+Animals[(SY-4)%12]+'年】';
   everything=everything +  '【'+Animals[(SY-4)%12]+'年】';


   sD = tD-1 ;


   everything=everything + ' <b>'+(cld[sD].isLeap?'闰':'') + lmonthName[eval(cld[sD].lMonth)] + '月' + (monthDays(cld[sD].lYear,cld[sD].lMonth)==29?'小':'大')+' </b>' +        cDay(cld[sD].lDay) +         cld[sD].lunarFestival;

   document.write(everything);
}


showToday();

//-->