// app.js
// Other functions
//

/////////////////////////////////////////////////
// USAGE: Calculate Age from Current Date
function HowOld(day,month,year,thisDay,thisMonth,thisYear) 
{
    var yearsold = thisYear - year, monthsold = 0, daysold = 0;

    if (thisMonth >= month) 
    	monthsold = thisMonth - month;
    else 
    { 
    	yearsold--; monthsold = thisMonth + 12 - month; 
    }

    if (thisDay >= day)
    	daysold = thisDay - day;
    else 
    {
        if (monthsold > 0) monthsold--;
        else { yearsold--; monthsold+=11; }
        daysold = thisDay + 31 - day;
    }

    if (yearsold < 0) 
    	return 0;

    if ((yearsold == 0) && (monthsold == 0) && (daysold == 0))
        return 0;

	return yearsold;
}
					

function checkAge(legalAge,todayDay,todayMonth,todayYear)
{
/*	
	var myRe=/([0-9]{4,4})-([0-9]{1,2})-([0-9]{1,2})/;
	var personAge;
	var myArray = myRe.exec(document.getElementById('dateBirthday').value);
	
    if(myArray)
    {
    	personAge=HowOld(
    			parseInt(myArray[3]),
    			parseInt(myArray[2]),
    			parseInt(myArray[1]),
    			todayDay,
    			todayMonth,
    			todayYear);
    	if(legalAge > personAge)
        	return false;
        else
        	return true;
    }
	
	alert('Date is not set!? : ('+ document.getElementById('dateBirthday').value + ') ');
	
	return false;
*/    	
    	personAge=HowOld(
    			parseInt(getValueByName('userBirthDate')),
    			parseInt(getValueByName('userBirthMonth')),
    			parseInt(getValueByName('userBirthYear')),
    			todayDay,
    			todayMonth,
    			todayYear);
    	if(legalAge > personAge)
        	return false;
        else
        	return true;
}