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 ), /* 88 */
 new taglunarcal( 35, 0, 5, 53, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1 ), /* 89 */
 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 ), /* 93 */
 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 ), /* 97 */
 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 ), /* 101 */
 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 ), /* 105 */
 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 ), /* 109 */
 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 ), /* 113 */
 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 ), /* 117 */
 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 ) ];
 /* 民國年每月之日數*/
 solarcal = [ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 ];

 /* 民國年每月之累積日數, 平年與閏年 */ 
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&nbsp;&nbsp;&nbsp;&nbsp;",d[today.getday()+1],"");
 
 months = ["一","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( "&nbsp;&nbsp;&nbsp;&nbsp;农历"+months[lunarmonth-1]+"月" + days[lunardate-1] + "");
 
 return 0; 
}
 /* 求此民國年是否為閏年, 返回 0 為平年, 1 為閏年 */
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; /* 到民國 1 月 1 日到農曆正月初一的累積日數 */
 this.intercalation = i; /* 閏月月份. 0==此年沒有閏月 */
 this.baseweekday = w; /* 此年民國 1 月 1 日為星期幾再減 1 */
 this.basekanchih = k; /* 此年民國 1 月 1 日之干支序號減 1 */
 this.monthdays = [ m1, m2, m3, m4, m5, m6, m7, m8, m9, m10, m11, m12, m13 ]; /* 此農曆年每月之大小, 0==小月(29日), 1==大月(30日) */
}