function CalConv() 
{ 
FIRSTYEAR = 1998; 
LASTYEAR = 2031; 

today = new Date(); 
SolarYear = today.getFullYear(); 
SolarMonth = today.getMonth() + 1; 
SolarDate = today.getDate(); 
Weekday = today.getDay(); 
LunarCal = [ 
new tagLunarCal( 27, 5, 3, 43, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 1 ), 
new tagLunarCal( 46, 0, 4, 48, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1 ), 
new tagLunarCal( 35, 0, 5, 53, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1 ), 
new tagLunarCal( 23, 4, 0, 59, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1 ), 
new tagLunarCal( 42, 0, 1, 4, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1 ), 
new tagLunarCal( 31, 0, 2, 9, 1, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0 ), 
new tagLunarCal( 21, 2, 3, 14, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1 ), 
new tagLunarCal( 39, 0, 5, 20, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1 ), 
new tagLunarCal( 28, 7, 6, 25, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1 ), 
new tagLunarCal( 48, 0, 0, 30, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1 ), 
new tagLunarCal( 37, 0, 1, 35, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1 ), 
new tagLunarCal( 25, 5, 3, 41, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1 ), 
new tagLunarCal( 44, 0, 4, 46, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1 ), 
new tagLunarCal( 33, 0, 5, 51, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1 ), 
new tagLunarCal( 22, 4, 6, 56, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0 ), 
new tagLunarCal( 40, 0, 1, 2, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0 ), 
new tagLunarCal( 30, 9, 2, 7, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1 ), 
new tagLunarCal( 49, 0, 3, 12, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1 ), 
new tagLunarCal( 38, 0, 4, 17, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0 ), 
new tagLunarCal( 27, 6, 6, 23, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1 ), 
new tagLunarCal( 46, 0, 0, 28, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0 ), 
new tagLunarCal( 35, 0, 1, 33, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0 ), 
new tagLunarCal( 24, 4, 2, 38, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1 ), 
new tagLunarCal( 42, 0, 4, 44, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1 ), 
new tagLunarCal( 31, 0, 5, 49, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0 ), 
new tagLunarCal( 21, 2, 6, 54, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1 ), 
new tagLunarCal( 40, 0, 0, 59, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1 ), 
new tagLunarCal( 28, 6, 2, 5, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0 ), 
new tagLunarCal( 47, 0, 3, 10, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1 ), 
new tagLunarCal( 36, 0, 4, 15, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1 ), 
new tagLunarCal( 25, 5, 5, 20, 1, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0 ), 
new tagLunarCal( 43, 0, 0, 26, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1 ), 
new tagLunarCal( 32, 0, 1, 31, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0 ), 
new tagLunarCal( 22, 3, 2, 36, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0 ) ]; 

SolarCal = [ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 ]; 


SolarDays = [ 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365, 396, 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366, 397 ]; 


if ( SolarYear <= FIRSTYEAR || SolarYear > LASTYEAR ) return 1; 
sm = SolarMonth - 1; 
if ( sm < 0 || sm > 11 ) return 2; 
leap = GetLeap( SolarYear ); 
if ( sm == 1 ) 
d = leap + 28; 
else 
d = SolarCal[sm]; 
if ( SolarDate < 1 || SolarDate > d ) return 3; 
y = SolarYear - FIRSTYEAR; 
acc = SolarDays[ leap*14 + sm ] + SolarDate; 
kc = acc + LunarCal[y].BaseKanChih; 
Kan = kc % 10; 
Chih = kc % 12; 

Age = kc % 60; 
if ( Age < 22 ) 
Age = 22 - Age; 
else 
Age = 82 - Age; 

if ( acc <= LunarCal[y].BaseDays ) { 
y--; 
LunarYear = SolarYear - 1; 
leap = GetLeap( LunarYear ); 
sm += 12; 
acc = SolarDays[leap*14 + sm] + SolarDate; 
} 
else 
LunarYear = SolarYear; 
l1 = LunarCal[y].BaseDays; 
for ( i=0; i<13; i++ ) { 
l2 = l1 + LunarCal[y].MonthDays[i] + 29; 
if ( acc <= l2 ) break; 
l1 = l2; 
} 
LunarMonth = i + 1; 
LunarDate = acc - l1; 
im = LunarCal[y].Intercalation; 
if ( im != 0 && LunarMonth > im ) { 
LunarMonth--; 
if ( LunarMonth == im ) LunarMonth = -im; 
} 
if ( LunarMonth > 12 ) LunarMonth -= 12; 
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],""); 

months = ["正","二","三","四","五","六","七","八","九","十","十一","十二"]; 

days = ["初一","初二","初三","初四","初五","初六","初七","初八","初九","初十","十一","十二","十三","十四","十五","十六","十七","十八","十九","二十","廿一","廿二","廿三","廿四","廿五","廿六","廿七","廿八","廿九","三十"]; 

document.write( " 农历"+months[LunarMonth-1]+"月" + days[LunarDate-1] + ""); 

return 0; 
} 

function GetLeap( year ) 
{ 
if ( year % 400 == 0 ) 
return 1; 
else if ( year % 100 == 0 ) 
return 0; 
else if ( year % 4 == 0 ) 
return 1; 
else 
return 0; 
} 
function tagLunarCal( d, i, w, k, m1, m2, m3, m4, m5, m6, m7, m8, m9, m10, m11, m12, m13) { 
this.BaseDays = d; 
this.Intercalation = i; 
this.BaseWeekday = w; 
this.BaseKanChih = k; 
this.MonthDays = [ m1, m2, m3, m4, m5, m6, m7, m8, m9, m10, m11, m12, m13 ]; 
} 

CalConv();