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;

function init()
{
  CalendarData = new Array(
                  0xA4B,0x5164B,0x6A5,0x6D4,0x415B5,0x2B6,0x957,0x2092F,0x497,0x60C96,    // 1921-1930
                  0xD4A,0xEA5,0x50DA9,0x5AD,0x2B6,0x3126E, 0x92E,0x7192D,0xC95,0xD4A,     // 1931-1940
                  0x61B4A,0xB55,0x56A,0x4155B, 0x25D,0x92D,0x2192B,0xA95,0x71695,0x6CA,   // 1941-1950
                  0xB55,0x50AB5,0x4DA,0xA5B,0x30A57,0x52B,0x8152A,0xE95,0x6AA,0x615AA,    // 1951-1960
                  0xAB5,0x4B6,0x414AE,0xA57,0x526,0x31D26,0xD95,0x70B55,0x56A,0x96D,      // 1961-1970
                  0x5095D,0x4AD,0xA4D,0x41A4D,0xD25,0x81AA5, 0xB54,0xB6A,0x612DA,0x95B,   // 1971-1980
                  0x49B,0x41497,0xA4B,0xA164B, 0x6A5,0x6D4,0x615B4,0xAB6,0x957,0x5092F,   // 1981-1990
                  0x497,0x64B, 0x30D4A,0xEA5,0x80D65,0x5AC,0xAB6,0x5126D,0x92E,0xC96,     // 1991-2000
                  0x41A95,0xD4A,0xDA5,0x20B55,0x56A,0x7155B,0x25D,0x92D,0x5192B,0xA95,    // 2001-2010
                  0xB4A,0x416AA,0xAD5,0x90AB5,0x4BA,0xA5B, 0x60A57,0x52B,0xA93,0x40E95    // 2011-2020
				  );  
          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);   //年干
  tmp+=dzString.charAt((cYear-4)%12);   //年支
  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")); /*卅*/
  if (cDay%10!=0||cDay==10) { tmp+=numString.charAt((cDay-1)%10); }
  return tmp;
}


init();
function GetLunarDay()
{
	var now = new Date();
	var solarYear = now.getFullYear();
	var solarMonth = now.getMonth() + 1;
	var Month = now.getMonth() + 1;
	var solarDay = now.getDate();

	if (solarYear<1921 || solarYear>2020)
	{
	  return ""; //年份不在1921-2020范围，无法获得。
	}
	else
	{
	  solarMonth = (parseInt(solarMonth)>0) ? (solarMonth-1) : 11;
	  e2c(solarYear,solarMonth,solarDay); 
	  return solarYear+"年"+Month+"月"+solarDay+"日 星期"+"天一二三四五六".charAt(now.getDay());
	}
}

document.write(GetLunarDay());
function dateTest(firstDate) {
 var fDate = firstDate.split("-");
 firstDate = new Date();
 var sss = "fffff:" + fDate[2];
 alert(sss);
 var fDateMonth = parseFloat(fDate[1]) - 1;
 alert(fDateMonth);
 firstDate.setYear(parseFloat(fDate[0]));
 firstDate.setMonth(fDateMonth);
 firstDate.setDate(parseFloat(fDate[2]));
 alert(firstDate);
 firstDate.setHours(0);
 firstDate.setMinutes(0);
 firstDate.setSeconds(0);
 firstDate.setMilliseconds(0);
 alert(firstDate);
}