function showdate() 
{ 
week= new Array("يكشنبه","دوشنبه","سهشنبه","چهارشنبه","پنج شنبه","جمعه","شنبه")
months = new Array("فروردين","ارديبهشت","خرداد","تير","مرداد","شهريور","مهر","آبان","آذر","دي","بهمن","اسفند"); 
a = new Date(); d= a.getDay(); day= a.getDate(); month =a.getMonth()+1; year= a.getYear(); if (year== 0){year=2000;}
 if (year<100){year +=1900;} y=1; for(i=0;i<3000;i+=4) { if (year==i) 
{y=2;} } for(i=1;i<3000;i+=4) { if (year==i) {y=3;} } if (y==1) { 
year -= ( (month < 3) || ((month == 3) && (day < 21)) )? 
622:621; switch (month) { case 1: (day<21)? (month=10, 
day+=10):(month=11, day-=20); break; case 2: (day<20)? (month=11, 
day+=11):(month=12, day-=19); break; case 3: (day<21)? (month=12, 
day+=9):(month=1, day-=20); break; case 4: (day<21)? (month=1, 
day+=11):(month=2, day-=20); break; case 5: case 6: (day<22)? 
(month-=3, day+=10):(month-=2, day-=21); break; case 7: case 8: case 9: 
(day<23)? (month-=3, day+=9):(month-=2, day-=22); break; case 
10:(day<23)? (month=7, day+=8):(month=8, day-=22); break; case 11: 
case 12:(day<22)? (month-=3, day+=9):(month-=2, day-=21); break; 
default: break; } } if (y==2) { year -= ( (month < 3) || ((month == 
3) && (day < 20)) )? 622:621; switch (month) { case 1: 
(day<21)? (month=10, day+=10):(month=11, day-=20); break; case 2: 
(day<20)? (month=11, day+=11):(month=12, day-=19); break; case 3: 
(day<20)? (month=12, day+=10):(month=1, day-=19); break; case 4: 
(day<20)? (month=1, day+=12):(month=2, day-=19); break; case 5: 
(day<21)? (month=2, day+=11):(month=3, day-=20); break; case 6: 
(day<21)? (month=3, day+=11):(month=4, day-=20); break; case 7: 
(day<22)? (month=4, day+=10):(month=5, day-=21); break; case 8: 
(day<22)? (month=5, day+=10):(month=6, day-=21); break; case 9: 
(day<22)? (month=6, day+=10):(month=7, day-=21); break; case 
10:(day<22)? (month=7, day+=9):(month=8, day-=21); break; case 
11:(day<21)? (month=8, day+=10):(month=9, day-=20); break; case 
12:(day<21)? (month=9, day+=10):(month=10, day-=20); break; default: 
break; } } if (y==3) { year -= ( (month < 3) || ((month == 3) 
&& (day < 21)) )? 622:621; switch (month) { case 1: 
(day<20)? (month=10, day+=11):(month=11, day-=19); break; case 2: 
(day<19)? (month=11, day+=12):(month=12, day-=18); break; case 3: 
(day<21)? (month=12, day+=10):(month=1, day-=20); break; case 4: 
(day<21)? (month=1, day+=11):(month=2, day-=20); break; case 5: case 
6: (day<22)? (month-=3, day+=10):(month-=2, day-=21); break; case 7: 
case 8: case 9: (day<23)? (month-=3, day+=9):(month-=2, day-=22); 
break; case 10:(day<23)? (month=7, day+=8):(month=8, day-=22); 
break; case 11: case 12:(day<22)? (month-=3, day+=9):(month-=2, 
day-=21); break; default: break; } } 
document.write(week[d]+" "+day+" "+months[month-1]+" "+ year); 

}