
/*
http://www.cnblogs.com/xian4432/archive/2009/12/27/1633490.html
月份大的值为1，如2000年对应的数值0x0c960,二进制位0000 1100 1001 0110 0000,表示1,2,5,8,10,11为大月。
1990年对应的数值是0x04af5,二进制位：0000 0100 1010 1111 5 ,表示2,5,7,9,10,11,12为大月，今年闰5月。
前面4位二进制，为1表示该年为闰年.并且对应的闰月天数为30天.
后4位二进制，表示闰哪一月
该表显示的是1900~2050,共计150年的年信息.
*/
var lunarInfo=new Array(
0x04bd8,0x04ae0,0x0a570,0x054d5,0x0d260,0x0d950,0x16554,0x056a0,0x09ad0,0x055d2,
0x04ae0,0x0a5b6,0x0a4d0,0x0d250,0x1d255,0x0b540,0x0d6a0,0x0ada2,0x095b0,0x14977,
0x04970,0x0a4b0,0x0b4b5,0x06a50,0x06d40,0x1ab54,0x02b60,0x09570,0x052f2,0x04970,
0x06566,0x0d4a0,0x0ea50,0x06e95,0x05ad0,0x02b60,0x186e3,0x092e0,0x1c8d7,0x0c950,
0x0d4a0,0x1d8a6,0x0b550,0x056a0,0x1a5b4,0x025d0,0x092d0,0x0d2b2,0x0a950,0x0b557,
0x06ca0,0x0b550,0x15355,0x04da0,0x0a5d0,0x14573,0x052d0,0x0a9a8,0x0e950,0x06aa0,
0x0aea6,0x0ab50,0x04b60,0x0aae4,0x0a570,0x05260,0x0f263,0x0d950,0x05b57,0x056a0,
0x096d0,0x04dd5,0x04ad0,0x0a4d0,0x0d4d4,0x0d250,0x0d558,0x0b540,0x0b5a0,0x195a6,
0x095b0,0x049b0,0x0a974,0x0a4b0,0x0b27a,0x06a50,0x06d40,0x0af46,0x0ab60,0x09570,
0x04af5,0x04970,0x064b0,0x074a3,0x0ea50,0x06b58,0x055c0,0x0ab60,0x096d5,0x092e0,

0x0c960,0x0d954,0x0d4a0,0x0da50,0x07552,0x056a0,0x0abb7,0x025d0,0x092d0,0x0cab5,
0x0a950,0x0b4a0,0x0baa4,0x0ad50,0x055d9,0x04ba0,0x0a5b0,0x15176,0x052b0,0x0a930,
0x07954,0x06aa0,0x0ad50,0x05b52,0x04b60,0x0a6e6,0x0a4e0,0x0d260,0x0ea65,0x0d530,
0x05aa0,0x076a3,0x096d0,0x04bd7,0x04ad0,0x0a4d0,0x1d0b6,0x0d250,0x0d520,0x0dd45,
0x0b5a0,0x056d0,0x055b2,0x049b0,0x0a577,0x0a4b0,0x0aa50,0x1b255,0x06d20,0x0ada0)
var Animals=new Array("鼠","牛","虎","兔","龙","蛇","马","羊","猴","鸡","狗","猪");
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 now = 0;//new Date();
var SY =  0;//now.getFullYear();//getFullYear保证了版本兼容性 now.getYear(); 
var SM =  0;//now.getMonth();//返回一个处于 0 到 11 之间的整数，它代表 Date 对象中的月份值
var SD =  0;//now.getDate();

 
 
function cyclical(num) { return(Gan[num%10]+Zhi[num%12]) } //==== 传入 offset 传回干支, 0=甲子


//==== 传回农历 y年闰哪个月 1-12 , 没闰传回 0
function leapMonth(y) { return(lunarInfo[y-1900] & 0xf)}

//==== 传回农历 y年闰月的天数
function leapDays(y) 
{
   if(leapMonth(y))  return((lunarInfo[y-1900] & 0x10000)? 30: 29)
   else return(0)
}

//==== 传回农历 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))
}
//====================================== 传回农历 y年m月的总天数
function monthDays(y,m) { return( (lunarInfo[y-1900] & (0x10000>>m))? 30: 29 )}



//==== 算出农历, 传入日期物件, 传回农历日期物件
//     该物件属性有 .year .month .day .isLeap .yearCyl .monCyl .dayCyl
function Lunar(objDate) 
{
   var i, leap=0, temp=0;
   var baseDate = new Date(1900,0,31);//new Date(1899,11,31);//
   var offset   = (objDate - baseDate)/86400000;//除以每天的毫秒数

   this.dayCyl = offset + 40;
   this.monCyl = 14;

   for(i=1900; i<2050 && offset>0; i++) 
   {
      temp = lYearDays(i);
      offset -= temp;
      this.monCyl += 12;//获得从1900年到现在的总月数
   }
   
   if(offset<0) 
   {
      offset += temp;
      i--;
      this.monCyl -= 12;//尼妹，算超了，再补回去。
   }

   this.year = i;
   this.yearCyl = i-1864;

   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(this.isLeap == false) this.monCyl++;
   }

   if(offset==0 && leap>0 && i==leap+1)
      if(this.isLeap)
         { this.isLeap = false; }
      else
         { this.isLeap = true; --i; --this.monCyl;}

   if(offset<0){ offset += temp; --i; --this.monCyl; }

   this.month = i;
   this.day = offset + 1 ;
   
}//function Lunar(objDate) 

function YYMMDD(y,m,d)
{ 
    var currDate = new Date(y,m,d);//Date.parse();
    
    var cl = '<font color="green" STYLE="font-size:13pt;">'; 
    if (currDate.getDay() == 0) cl = '<font color="#c00000" STYLE="font-size:13pt;">'; 
    if (currDate.getDay() == 6) cl = '<font color="#c00000" STYLE="font-size:13pt;">';
    return(cl+y+'年'+(m+1)+'月'+d+'日'+'</font>'); 
}

function weekday(y,m,d)
{ 
    var currDate = new Date(y,m,d);//Date.parse();
    var day = new Array("星期日","星期一","星期二","星期三","星期四","星期五","星期六");
    var cl = '<font color="green" STYLE="font-size:9pt;">'; 
    if (currDate.getDay() == 0) cl = '<font color="red" STYLE="font-size:9pt;">';
    if (currDate.getDay() == 6) cl = '<font color="red" STYLE="font-size:9pt;">'; 
    return(cl+ day[currDate.getDay()]+ '</font>'); 
}
 
function solarDay1(y,m,d)
{
    var sDObj = new Date(y,m,d);
    var lDObj = new Lunar(sDObj);
    var cl = '<font color="#9933CC" STYLE="font-size:9pt;">'; 
   
    var tt = '【'+Animals[(lDObj.year-4)%12]+'】'+cyclical(lDObj.monCyl)+'月 '+cyclical(lDObj.dayCyl++)+'日' ;
    return (cl+tt+'</font>');
}

function nlYearMonth(y,m,d) 
{
    var sDObj = new Date(y,m,d);
    var lDObj = new Lunar(sDObj);
    var cl = '<font color="#9933CC" STYLE="font-size:9pt;">'; 
   
    var tt = '【'+Animals[(lDObj.year-4)%12]+'】'+cyclical(lDObj.year-1900+36)+'年 ' +cyclical(lDObj.monCyl)+'月 '  ;
    return(cl+tt+'</font>');
}



//==== 中文日期
function cDay(m,d)
{
    var nStr1 = new Array('日','一','二','三','四','五','六','七','八','九','十');
    var nStr2 = new Array('初','十','廿','卅','　');
    var s;


    if (m>10){s = '十'+nStr1[m-10]; } else {s = nStr1[m];}; 
    s += '月';

    switch (d) 
    {
      case 10:s += '初十'; break;
      case 20:s += '二十'; break;
      case 30:s += '三十'; break;
      default:
        s += nStr2[Math.floor(d/10)]; 
        s += nStr1[d%10];
    }
    return(s);
}
 