function basiccalc()
{
        form = document.calcform
        LoanAmt= form.LoanAmt.value
                
        DwnPay= form.DwnPay.value
        if (DwnPay == "")  {
                DwnPay = "0"
        }
        AnnualIntrate = form.Intrate.value/100
        Years= form.No_of_yrs.value
        MonthRate=AnnualIntrate/12
        NumPayments=Years*12
        FortRate=AnnualIntrate/26
        NumPayments3=Years*26
        WeekRate=AnnualIntrate/52
        NumPayments2=Years*52
        Prin=LoanAmt-DwnPay
        MonthPayment=Math.floor((Prin*MonthRate)/(1-Math.pow((1+MonthRate),(-1*NumPayments)))*100)/100
        FortPayment=Math.floor((Prin*FortRate)/(1-Math.pow((1+FortRate),(-1*NumPayments3)))*100)/100
        WeekPayment=Math.floor((Prin*WeekRate)/(1-Math.pow((1+WeekRate),(-1*NumPayments2)))*100)/100
        form.No_of_Pay.value=NumPayments
        form.MnthPay.value=MonthPayment
        form.fortPay.value=FortPayment
        form.weekPay.value=WeekPayment
}