// Age Calculator By Dev Pragad devpragad@yahoo.com http://www.geocities.com/devpragad
function start() {
document.form1.day.value=""
document.form1.month.value=""
document.form1.year.value=""
document.form1.age.value=""
document.form1.months.value=""
document.form1.weeks.value=""
document.form1.answer.value=""
document.form1.hours.value=""
document.form1.min.value=""
document.form1.sec.value=""
document.form1.bday.value=""
document.form1.milli.value=""

}
function run() {

var ap;
dd=document.form1.day.value
mm=document.form1.month.value
yy=document.form1.year.value
with(document.form1) {

ap=parseInt(ampm.selectedIndex);
hr=parseInt(hrs.value);

if(hr<=0 && hr>=13){ap=null;alert("asdf")}
}

main="valid"
if ((mm<1) || (mm>12) || (dd<1) || (dd>31) || (yy<1) ||(mm=="") || (dd=="") || (yy==""))  main="Invalid"
else
if (((mm==4) || (mm==6) || (mm==9) || (mm==11)) && (dd>30)) main="Invalid"
else if (mm==2) {
if (dd>29)main="Invalid"
else if((dd>28) && (!lyear(yy)))   main="Invalid"
}
else if((yy>9999)||(yy<0)) main="Invalid"
else main=main
if(main=="valid") {

function leapyear(a) {
if(((a%4==0)&&(a%100!=0))||(a%400==0)) return true
else
return false
}

days = new Date()
gdate = days.getDate()
gmonth = days.getMonth()
gyear = days.getYear()
age=gyear-yy;
if((mm==(gmonth+1))&&(dd<=parseInt(gdate))) {
age=age
} else {
if(mm<=(gmonth)) {
age=age
} else {
age=age-1
} }
if(age==0)
age=age
document.form1.age.value="  You are " + age+ " years old & "
if(mm<=(gmonth+1))
age=age-1
if((mm==(gmonth+1))&&(dd>parseInt(gdate)))
age=age+1

var m=0;
var n=0;
if (mm==12) { n=31-dd; }
if (mm==11) { n=61-dd;}
if (mm==10) { n=92-dd; }
if (mm==9) { n=122-dd;  }
if (mm==8) { n=153-dd;}
if (mm==7) { n=184-dd;}
if (mm==6) { n=214-dd; }
if (mm==5) { n=245-dd;  }
if (mm==4) { n=275-dd;  }
if (mm==3) { n=306-dd;  }
if (mm==2) { n=334-dd; if(leapyear(yy)) n=n+1 }
if (mm==1) { n=365-dd;  if (leapyear(yy)) n=n+1 }

if (gmonth==1) m=31
if (gmonth==2)
   { m=59
     if (leapyear(gyear)) m=m+1;  }
if (gmonth==3) { m=90;  if (leapyear(gyear)) m=m+1; }
if (gmonth==4) { m=120;  if (leapyear(gyear)) m=m+1; }
if (gmonth==5) { m=151 ; if (leapyear(gyear)) m=m+1; }
if (gmonth==6) { m=181;  if (leapyear(gyear)) m=m+1; }
if (gmonth==7) { m=212 ; if (leapyear(gyear)) m=m+1; }
if (gmonth==8) { m=243  ;if (leapyear(gyear)) m=m+1; }
if (gmonth==9) { m=273;  if (leapyear(gyear)) m=m+1; }
if (gmonth==10) { m=304;  if (leapyear(gyear)) m=m+1; }
if (gmonth==11) { m=334;  if (leapyear(gyear)) m=m+1; }
if (gmonth==12) { m=365;  if (leapyear(gyear)) m=m+1; }

totdays=(parseInt(age)*365)
totdays+=age/4
totdays=parseInt(totdays)+gdate+m+n
document.form1.answer.value="" + totdays +" days "

// month

months=age*12
months+=12-parseInt(mm)
months+=gmonth
document.form1.months.value=months+" Months"
var p=0;
//weeks
if (gmonth==1) p=31+gdate
if (gmonth==2)
   { p=59+gdate
     if (leapyear(gyear)) m=m+1;  }
if (gmonth==3) { p=90+gdate;  if (leapyear(gyear)) p=p+1; }
if (gmonth==4) { p=120+gdate;  if (leapyear(gyear)) p=p+1; }
if (gmonth==5) { p=151+gdate ; if (leapyear(gyear)) p=p+1; }
if (gmonth==6) { p=181+gdate;  if (leapyear(gyear)) p=p+1; }
if (gmonth==7) { p=212+gdate ; if (leapyear(gyear)) p=p+1; }
if (gmonth==8) { p=243+gdate  ;if (leapyear(gyear)) p=p+1; }
if (gmonth==9) { p=273+gdate;  if (leapyear(gyear)) p=p+1; }
if (gmonth==10) { p=304+gdate;  if (leapyear(gyear)) p=p+1; }
if (gmonth==11) { p=334+gdate;  if (leapyear(gyear)) p=p+1; }
if (gmonth==12) { p=365+gdate;  if (leapyear(gyear)) p=p+1; }
/*
weeks=(age*365)+n+p
weeks=weeks/7
etcdays=parseFloat(weeks)-parseInt(weeks)
etcdays=Math.round(etcdays*7)
weeks=parseInt(weeks)
etcdays+=parseInt(age/4)
if(etcdays>7)
weeks+=parseInt(etcdays/7)
*/
weeks=totdays/7
weeks+=" weeks"
weeks=parseInt(weeks);
document.form1.weeks.value=weeks+" Weeks"

// hours
var time=new Date()
ghour=time.getHours()
gmin=time.getMinutes()
gsec=time.getSeconds()

hour=((age*365)+n+p)*24
hour+=(parseInt(age/4)*24)
if(ap==0){hour=hour-hr}else{if(ap==1){hour=hour-(11+hr)}}

document.form1.hours.value=hour+" Hours"

var min
//minutes
min=(hour*60)+gmin
document.form1.min.value=min+" Minutes"
sec=(min*60)+gsec
document.form1.sec.value=sec+" Seconds"
var millisec;
var gmil;
gmil = days.getMilliseconds();
millisec=(sec*1000)+gmil;
document.form1.milli.value=millisec+" Milliseconds";
mm=mm-1
var r
if(mm==0) r=1
if (mm==1) r=31
if (mm==2)
   { r=59
     if (leapyear(gyear)) m=m+1;  }
if (mm==3) { r=90;  if (leapyear(gyear)) r=r+1; }
if (mm==4) { r=120;  if (leapyear(gyear)) r=r+1; }
if (mm==5) { r=151 ; if (leapyear(gyear)) r=r+1; }
if (mm==6) { r=181;  if (leapyear(gyear)) r=r+1; }
if (mm==7) { r=212 ; if (leapyear(gyear)) r=r+1; }
if (mm==8) { r=243  ;if (leapyear(gyear)) r=r+1; }
if (mm==9) { r=273;  if (leapyear(gyear)) r=r+1; }
if (mm==10) { r=304;  if (leapyear(gyear)) r=r+1; }
if (mm==11) { r=334;  if (leapyear(gyear)) r=r+1; }
if (mm==12) { r=365;  if (leapyear(gyear)) r=r+1; }
mm=mm+1;
r=parseInt(r)+parseInt(dd);

if(mm>(gmonth+1)){
bday=r-m-gdate
} else {
if(mm==(gmonth+1)&&(gdate<dd)){
bday=(r-m-gdate)
} else {
if((leapyear(gyear))&&((mm>2)&&(dd<29))) {
a=366
} else {
a=365
}
bday=a+(r-m-gdate)
}}
nhour=24-parseInt(ghour)
nmin=60-parseInt(gmin)
nsec=60-parseInt(gsec)
go();
if(((bday==366)&&(leapyear(yy)))||((bday==365)&&(!leapyear(yy)))) {
document.form1.bday.value="Today is your birthday"
alert("Happy Birthday")
} else {
document.form1.bday.value=bday+" days "+ nhour+" hours "+nmin+" minutes "+nsec+" seconds"
setTimeout("run()",1)
}
function go() {
function lyear(a) {
if(((a%4==0) && (a%100!=0)) || (a%400==0)) return true;
else return false;
}
mm=parseInt(mm)
dd=parseInt(dd)
yy=parseInt(yy)
if ((mm<1) || (mm>12) || (dd<1) || (dd>31) || (yy<1) ||(mm==" ") || (dd==" ") || (yy==" "))  main="Invalid"
else
if (((mm==4) || (mm==6) || (mm==9) || (mm==11)) && (dd>30)) main="Invalid"
else if (mm==2) {
if (dd>29)main="Invalid"
else if((dd>28) && (!lyear(yy)))   main="Invalid"
}
else main=main
if(main=="valid") {
var m
if (mm==1) n=31+1
if (mm==2)
   { n=59+1}
if (mm==3)  n=90+1//;  if (lyear(yy)) n=n+1; }
if (mm==4)  n=120+1//  if (lyear(yy)) n=n+1; }
if (mm==5)  n=151+1// ; if (lyear(yy)) n=n+1; }
if (mm==6)  n=181+1//;  if (lyear(yy)) n=n+1; }
if (mm==7)  n=212+1// ; if (lyear(yy)) n=n+1; }
if (mm==8)  n=243+1//  ;if (lyear(yy)) n=n+1; }
if (mm==9)  n=273+1//;  if (lyear(yy)) n=n+1; }
if (mm==10)  n=304+1//;  if (lyear(yy)) n=n+1; }
if (mm==11)  n=334+1//;  if (lyear(yy)) n=n+1; }
if (mm==12)  n=365+1//;  if (lyear(yy)) n=n+1; }

if((mm==1)||(mm==3)||(mm==5)||(mm==7)||(mm==8)||(mm==10)||(mm==12))
n+=31+dd
else if((mm==4)||(mm==6)||(mm==9)||(mm==11))
n+=31+dd+1
else if(mm==2) {
if(lyear(yy)) n+=29+dd-3
else if(!lyear(yy)) n+=28+dd-1
}

fours = yy/4
hunds = yy/100
fhunds = yy/400
var day

day=(yy + n + fours - hunds + fhunds) % 7;
day=parseInt(day)
switch(day)
{
case 1 : document.form1.age.value +="You were born on a Sunday"
break
case 2 : document.form1.age.value +="You were born on a Monday"
break
case 3 : document.form1.age.value +="You were born on a Tuesday"
break
case 4 : document.form1.age.value +="You were born on a Wednesday"
break
case 5 : document.form1.age.value +="You were born on a Thursday"
break
case 6 : document.form1.age.value +="You were born on a Friday"
break
case 7 : document.form1.age.value +="You were born on a Saturday"
break
case 0 : document.form1.age.value +="You were born on a Saturday"
break
}
} else {
document.form1.age.value +=main+" Date"
}
}
} else {
document.form1.age.value=main+" Date"
document.form1.months.value=""
document.form1.weeks.value=""
document.form1.answer.value=""
document.form1.hours.value=""
document.form1.min.value=""
document.form1.sec.value=""
document.form1.bday.value=""
document.form1.milli.value=""
}
}