function Morgcal(){ 
    form = document.forms.mortcalcform
    LoanAmount= form.LoanAmount.value
    DownPayment= "0"
    AnnualInterestRate= form.InterestRate.value/100
    Years= form.NumberOfYears.value
    MonthRate=AnnualInterestRate/12 
    NumPayments=Years*12
    Prin=LoanAmount-DownPayment
    MonthPayment=Math.floor((Prin*MonthRate)/(1-Math.pow((1+MonthRate),(-1*NumPayments)))*100)/100 
    form.NumberOfPayments.value=NumPayments
    form.MonthlyPayment.value=MonthPayment 
}
function OpenView() {
    iwin = window.open("","iwin","status=no,toolbar=no,location=no,menu=no,scrollbars=yes,resize=yes,width=660,height=500")
    iwin.focus();
}