// JavaScript Document

<!-- hide the mortgage calculator formula from non JavaScript browsers
function calculatepayment(){


function formatCurrency(strValue)
{
	strValue = strValue.toString().replace(/\$|\,/g,'');
	dblValue = parseFloat(strValue);

	blnSign = (dblValue == (dblValue = Math.abs(dblValue)));
	dblValue = Math.floor(dblValue*100+0.50000000001);
	intCents = dblValue%100;
	strCents = intCents.toString();
	dblValue = Math.floor(dblValue/100).toString();
	if(intCents<10)
		strCents = "0" + strCents;
	for (var i = 0; i < Math.floor((dblValue.length-(1+i))/3); i++)
		dblValue = dblValue.substring(0,dblValue.length-(4*i+3))+','+
		dblValue.substring(dblValue.length-(4*i+3));
	return (((blnSign)?'':'-') + '' + dblValue + '.' + strCents);
}

function find_payment(PR, IN, PE) {
var PAY = (PR * IN) / (1 - Math.pow(1 + IN, -PE))
return PAY
}

var principal = document.getElementById("loanamount").value;
var percent = document.getElementById("percent").value;
var interest= percent/100;
var term = document.getElementById("loanperiod").value;

var monthly_payment = find_payment(principal, interest / 12, term * 12)
var principal=formatCurrency(principal);
var monthly_payment=formatCurrency(monthly_payment);

document.getElementById("month_pay").innerHTML=monthly_payment;
}