var one_day=1000*60*60*24
var one_month=1000*60*60*24*30
var one_year=1000*60*60*24*30*12

function verifyage(yr, mon, day, unit, decimal, round, agelimit){
    today=new Date()
    var pastdate=new Date(yr, mon-1, day)

    var countunit=unit
    var decimals=decimal
    var rounding=round

    finalunit=(countunit=="days")? one_day : (countunit=="months")? one_month : one_year
    decimals=(decimals<=0)? 1 : decimals*10

    if (unit!="years"){
        if (rounding=="rounddown")
        document.write(Math.floor((today.getTime()-pastdate.getTime())/(finalunit)*decimals)/decimals+" "+countunit)
        else
        document.write(Math.ceil((today.getTime()-pastdate.getTime())/(finalunit)*decimals)/decimals+" "+countunit)
    }
    else{
        yearspast=today.getFullYear()-yr-1
        tail=(today.getMonth()>mon-1 || today.getMonth()==mon-1 && today.getDate()>=day)? 1 : 0
        pastdate.setFullYear(today.getFullYear())
        pastdate2=new Date(today.getFullYear()-1, mon-1, day)
        tail=(tail==1)? tail+Math.floor((today.getTime()-pastdate.getTime())/(finalunit)*decimals)/decimals : Math.floor((today.getTime()-pastdate2.getTime())/(finalunit)*decimals)/decimals
        var finalage = yearspast+tail;        
        
        if(isNaN(finalage))
        {
            return false;
        }
        
        if(finalage < agelimit)
        {
            return false;
        }
        else
        {
            return true;
        }
    }
}