function calcPmt() { loanMonths = parseFloat(document.frm.months.value); loanAmount = parseFloat(document.frm.LoanAmt.value); var moInterestRate = 0; //alert(loanAmount); loanAmount = formatNoCommas(loanAmount); //alert(loanAmount); loanAmount = parseFloat(loanAmount); //alert(loanAmount); if (document.frm.Rate.value == "") { interestRate = "8.25" document.frm.Rate.value = formatRate2(interestRate,"#.000",false); } else { interestRate = (document.frm.Rate.value); //alert(interestRate); document.frm.Rate.value = formatRate2(interestRate,"#.000",false); interestRate = parseFloat(document.frm.Rate.value); if (interestRate < "0.0" || interestRate < "0.00" || interestRate < "0.000") { alert("Interest Rate cannot be below 0.000%") document.frm.Rate.value = formatRate2("8.25","#.000",false); interestRate = parseFloat(document.frm.Rate.value); } moInterestRate = (interestRate/100)/12; //alert(moInterestRate); //alert(interestRate); } var pmtEqnTop = (loanAmount * moInterestRate); var pmtEqnBot1 = (1+moInterestRate); //alert(pmtEqnBot1); var pmtEqnBot2 = Math.pow(pmtEqnBot1,loanMonths); //alert(pmtEqnBot2); var pmtEqnBot3 = 1/pmtEqnBot2; //alert(pmtEqnBot3); var pmtEqnBot4 = 1-pmtEqnBot3; //alert(pmtEqnBot4); var loanAmount = pmtEqnTop; var pmtEqnBot = pmtEqnBot4; if (pmtEqnBot < "0" || pmtEqnBot < "0.0") { document.frm.payments.value = 0; } else { var payments = loanAmount/pmtEqnBot; var myPayments = parseFloat(payments); document.frm.payments.value = formatCurrency(myPayments); } }