function CalcPayment() {
 	form=document.frmCalculator;
 	var LoanAmount=form.LoanAmount.value;
 	var InterestRate=form.InterestRate.value/100/12;
 	var Years=form.NumberOfYears.value;
  var MPayment=(LoanAmount*InterestRate)/(1-Math.pow((1+InterestRate),(-1*(Years*12))));
 	document.getElementById('MonthlyPayment').innerHTML="Monthly Payment: $"+MPayment.toFixed(2);
 }
 function CalcPaymentPlus() {
 	form = document.frmCalculatorPlus;
 	var PurchasePrice=form.PurchasePrice.value;
 	var LoanAmount=form.LoanAmount.value;
 	var InterestRate=form.InterestRate.value/100/12;
 	var Years=form.NumberOfYears.value;
  var PropertyTax=form.PurchasePrice.value*.000893;
  var LTV=LoanAmount/PurchasePrice;
  var MPayment=(LoanAmount*InterestRate)/(1-Math.pow((1+InterestRate),(-1*(Years*12))));
  var PMI="PMI: ";
  var WIP;
  if (LTV>.8) {
   WIP=PurchasePrice/100000*55;
   PMI=PMI+"$"+WIP.toFixed(2)+" /month";
   MPayment=MPayment+WIP+PropertyTax;
  }
  else {
   PMI=PMI+" Not needed";
   MPayment=MPayment+PropertyTax;
  }
 	document.getElementById('PMI').innerHTML=PMI;
 	document.getElementById('Tax').innerHTML="Property Tax: ~ $"+PropertyTax.toFixed(2)+" /month";
 	document.getElementById('MonthlyPaymentPlus').innerHTML="Total: $"+MPayment.toFixed(2)+" /month";
 }
 function CalcPurchase() {
// 	alert("Sorry - This feature does not work yet.");
 	form = document.frmCalculatorPurchase;
 	var DownPayment=Number(form.DownPayment.value);
 	var MonthlyPayment=form.MonthlyPayment.value;
 	var InterestRate=form.InterestRate.value/100/12;
 	var Years=form.NumberOfYears.value;
  var PurchasePrice=MonthlyPayment*(1-Math.pow((1+InterestRate),(-1*(Years*12))))/InterestRate;
  PurchasePrice=PurchasePrice+DownPayment;
 	document.getElementById('PurchasePricep').innerHTML="Purchase Price: $"+PurchasePrice.toFixed(0);
}