function calculate () {

var price = document.Mortgage.Price.value;

var downpmt = document.Mortgage.DownPmt.value;

var rate = document.Mortgage.AnnIntRate.value;

var years = document.Mortgage.NoYrs.value;

var loanamt = price - downpmt;

var nopmts = years*12;

var morate = rate/1200;

var mopmt = loanamt*(morate/(1-Math.pow((1+morate), -nopmts)));

mopmt *= 100;

mopmt = Math.round(mopmt);

mopmt /= 100;



document.Mortgage.LoanAmt.value = loanamt;

document.Mortgage.NoPmts.value = nopmts;

document.Mortgage.MoPmt.value = mopmt;

}