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,
0x06ca0,0x0b550,0x15355,0x04da0,0x0a5b0,0x14573,0x052b0,0x0a9a8,0x0e950,0x06aa0,
0x0aea6,0x0ab50,0x04b60,0x0aae4,0x0a570,0x05260,0x0f263,0x0d950,0x05b57,0x056a0,
0x096d0,0x04dd5,0x04ad0,0x0a4d0,0x0d4d4,0x0d250,0x0d558,0x0b540,0x0b6a0,0x195a6,
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,
0x14b63);

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','□');
var monthName = new Array("JAN","FEB","MAR","APR","MAY","JUN","JUL","AUG","SEP","OCT","NOV","DEC");

var sFtv = new Array(
"0101*元旦",
"0214 情人节",
"0308 妇女节",
"0312 植树节",
"0315 消费者权益日",
"0401 愚人节",
"0501*劳动节",
"0513 丁成生日",
"0601 国际儿童节",
"0801 建军节",
"1001*国庆节",
"1224 平安夜",
"1225 圣诞节")

var lFtv = new Array(
"0101*春节",
"0115 元宵节",
"0505 端午节",
"0707 七夕情人节",
"0815 中秋节",
"0909 重阳节",
"1208 腊八节",
"1223 小年",
"0100 除夕")

//某月的第几个星期几
var wFtv = new Array(
"0520 母亲节",
"0630 父亲节",
"1144 感恩节")

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));
}

function leapDays(y) {
    if(leapMonth(y))  return((lunarInfo[y-1900] & 0x10000)? 30: 29);
    else return(0);
}

function leapMonth(y) {
    return(lunarInfo[y-1900] & 0xf);
}

function monthDays(y,m) {
    return( (lunarInfo[y-1900] & (0x10000>>m))? 30: 29 );
}


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<2050 && 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;   
this.sMonth     = sMonth;  
this.sDay       = sDay; 
this.week       = week;    
//农历
this.lYear      = lYear;   
this.lMonth     = lMonth;  
this.lDay       = lDay;    
this.isLeap     = isLeap;  
//八字
this.cYear      = cYear;   
this.cMonth     = cMonth;  
this.cDay       = cDay;    

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());
}

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);

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);

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

//公历节日
for(i in sFtv)
if(sFtv[i].match(/^(\d{2})(\d{2})([\s\*])(.+)$/))
if(Number(RegExp.$1)==(m+1)) {
this[Number(RegExp.$2)-1].solarFestival += RegExp.$4 + ' ';
if(RegExp.$3=='*') this[Number(RegExp.$2)-1].color = 'red';
}

//月周节日
for(i in wFtv)
if(wFtv[i].match(/^(\d{2})(\d)(\d)([\s\*])(.+)$/))
if(Number(RegExp.$1)==(m+1)) {
tmp1=Number(RegExp.$2);
tmp2=Number(RegExp.$3);
if(tmp1<5)
this[((this.firstWeek>tmp2)?7:0) + 7*(tmp1-1) + tmp2 - this.firstWeek].solarFestival += RegExp.$5 + ' ';
else {
tmp1 -= 5;
tmp3 = (this.firstWeek+this.length-1)%7; //当月最后一天星期?
this[this.length - tmp3 - 7*tmp1 + tmp2 - (tmp2>tmp3?7:0) - 1 ].solarFestival += RegExp.$5 + ' ';
}
}

//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';
}
}
}


//复活节只出现在3或4月
if(m==2 || m==3) {
var estDay = new easter(y);
if(m == estDay.m)
this[estDay.d-1].solarFestival = this[estDay.d-1].solarFestival+' 复活节';
}


if(m==2) this[20].solarFestival = this[20].solarFestival;//+unescape('%20%u6D35%u8CE2%u751F%u65E5');

//今日
if(y==tY && m==tM) this[tD-1].isToday = true;
}

//======================================= 返回该年的复活节(春分后第一次满月周后的第一主日)
function easter(y) {

var term2=sTerm(y,5); //取得春分日期
var dayTerm2 = new Date(Date.UTC(y,2,term2,0,0,0,0)); //取得春分的公历日期控件(春分一定出现在3月)
var lDayTerm2 = new Lunar(dayTerm2); //取得取得春分农历

if(lDayTerm2.day<15) //取得下个月圆的相差天数
var lMlen= 15-lDayTerm2.day;
else
var lMlen= (lDayTerm2.isLeap? leapDays(y): monthDays(y,lDayTerm2.month)) - lDayTerm2.day + 15;

//一天等于 1000*60*60*24 = 86400000 毫秒
var l15 = new Date(dayTerm2.getTime() + 86400000*lMlen ); //求出第一次月圆为公历几日
var dayEaster = new Date(l15.getTime() + 86400000*( 7-l15.getUTCDay() ) ); //求出下个周日

this.m = dayEaster.getUTCMonth();
this.d = dayEaster.getUTCDate();

}

//====================== 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 cld;

function drawCld(SY,SM) {
var i,sD,s,size;
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<1949) yDisplay = '民国' + (((SY-1911)==1)?'元':SY-1911);
if(SY>1948) yDisplay = '建国' + (((SY-1948)==1)?'元':SY-1949);

GZ.innerHTML = yDisplay +'年 农历 ' + cyclical(SY-1900+36) + '年 【'+Animals[(SY-4)%12]+'年】';

YMBG.innerHTML = "&nbsp;&nbsp;" + SY + "<BR>&nbsp;&nbsp;" + monthName[SM];

for(i=0;i<42;i++) {

sObj=eval('SD'+ i);
lObj=eval('LD'+ i);

sObj.className = '';

sD = i - cld.firstWeek;

if(sD>-1 && sD<cld.length) { //日期内
sObj.innerHTML = sD+1;

if(cld[sD].isToday) sObj.className = 'todyaColor'; //今日颜色

sObj.style.color = cld[sD].color; //法定长假颜色

if(cld[sD].lDay==1) //显示农历月
lObj.innerHTML = '<b>'+(cld[sD].isLeap?'闰':'') + cld[sD].lMonth + '月' + (monthDays(cld[sD].lYear,cld[sD].lMonth)==29?'小':'大')+'</b>';
else //显示农历日
lObj.innerHTML = cDay(cld[sD].lDay);

s=cld[sD].lunarFestival;
if(s.length>0) { //农历节日
if(s.length>6) s = s.substr(0, 4)+'...';
s = s.fontcolor('red');
}
else { //公历节日
s=cld[sD].solarFestival;
if(s.length>0) {
size = (s.charCodeAt(0)>0 && s.charCodeAt(0)<128)?8:4;
if(s.length>size+2) s = s.substr(0, size)+'...';
s=(s=='黑色星期五')?s.fontcolor('black'):s.fontcolor('blue');
}
else { //廿四节气
s=cld[sD].solarTerms;
if(s.length>0) s = s.fontcolor('limegreen');
}
}

if(cld[sD].solarTerms=='清明') s = '清明节'.fontcolor('red');
if(cld[sD].solarTerms=='芒种') s = '芒种节'.fontcolor('red');
if(cld[sD].solarTerms=='夏至') s = '夏至节'.fontcolor('red');
if(cld[sD].solarTerms=='冬至') s = '冬至节'.fontcolor('red');



if(s.length>0) lObj.innerHTML = s;

}
else { //非日期
sObj.innerHTML = '';
lObj.innerHTML = '';
}
}
}


function changeCld() {
var y,m;
y=CLD.SY.selectedIndex+1900;
m=CLD.SM.selectedIndex;
drawCld(y,m);
}

function pushBtm(K) {
switch (K){
case 'YU' :
if(CLD.SY.selectedIndex>0) CLD.SY.selectedIndex--;
break;
case 'YD' :
if(CLD.SY.selectedIndex<150) CLD.SY.selectedIndex++;
break;
case 'MU' :
if(CLD.SM.selectedIndex>0) {
CLD.SM.selectedIndex--;
}
else {
CLD.SM.selectedIndex=11;
if(CLD.SY.selectedIndex>0) CLD.SY.selectedIndex--;
}
break;
case 'MD' :
if(CLD.SM.selectedIndex<11) {
CLD.SM.selectedIndex++;
}
else {
CLD.SM.selectedIndex=0;
if(CLD.SY.selectedIndex<150) CLD.SY.selectedIndex++;
}
break;
default :
CLD.SY.selectedIndex=tY-1900;
CLD.SM.selectedIndex=tM;
}
changeCld();
}

var Today = new Date();
var tY = Today.getFullYear();
var tM = Today.getMonth();
var tD = Today.getDate();

var width = "130";
var offsetx = 2;
var offsety = 8;

var x = 0;
var y = 0;
var snow = 0;
var sw = 0;
var cnt = 0;

var dStyle;
document.onmousemove = mEvn;

//显示详细日期资料
function mOvr(v) {
var s,festival;
var sObj=eval('SD'+ v);
var d=sObj.innerHTML-1;

if(sObj.innerHTML!='') {

sObj.style.cursor = 's-resize';

if(cld[d].solarTerms == '' && cld[d].solarFestival == '' && cld[d].lunarFestival == '')
festival = '';
else
festival = '<TABLE WIDTH=100% BORDER=0 CELLPADDING=2 CELLSPACING=0 BGCOLOR="#CCFFCC"><TR><TD>'+
'<FONT COLOR="#000000" STYLE="font-size:9pt;">'+cld[d].solarTerms + ' ' + cld[d].solarFestival + ' ' + cld[d].lunarFestival+'</FONT></TD>'+
'</TR></TABLE>';

s= '<TABLE WIDTH="130" BORDER=0 CELLPADDING="2" CELLSPACING=0 BGCOLOR="#000066" style="filter:Alpha(opacity=80)"><TR><TD>' +
'<TABLE WIDTH=100% BORDER=0 CELLPADDING=0 CELLSPACING=0><TR><TD ALIGN="right"><FONT COLOR="#ffffff" STYLE="font-size:9pt;">'+
cld[d].sYear+' 年 '+cld[d].sMonth+' 月 '+cld[d].sDay+' 日<br>星期'+cld[d].week+'<br>'+
'<font color="violet">农历'+(cld[d].isLeap?'闰 ':' ')+cld[d].lMonth+' 月 '+cld[d].lDay+' 日</font><br>'+
'<font color="yellow">'+cld[d].cYear+'年 '+cld[d].cMonth+'月 '+cld[d].cDay + '日</font>'+
'</FONT></TD></TR></TABLE>'+ festival +'</TD></TR></TABLE>';

document.all["detail"].innerHTML = s;

if (snow == 0) {
dStyle.left = x+offsetx-(width/2);
dStyle.top = y+offsety;
dStyle.visibility = "visible";
snow = 1;
}
}
}

function mOut() {
if ( cnt >= 1 ) { sw = 0; }
if ( sw == 0 ) { snow = 0; dStyle.visibility = "hidden";}
else cnt++;
}

function mEvn() {
x=event.x;
y=event.y;
if (document.body.scrollLeft)
{x=event.x+document.body.scrollLeft; y=event.y+document.body.scrollTop;}
if (snow){
dStyle.left = x+offsetx-(width/2);
dStyle.top = y+offsety;
}
}

function initial() {
   dStyle = detail.style;
   CLD.SY.selectedIndex=tY-1900;
   CLD.SM.selectedIndex=tM;
   drawCld(tY,tM);
}