//THIS FUNCTION CALCULATES THE TOTAL MONTHLY PAYMENT FOR AN AMORTORIZED LOAN
function calcMortgagePayment(principal, length, interest) {
	var p = principal;
	var i = interest/100/12;
	var n = length * 12;

	var payment = (p * i)/(1-(1/ Math.pow(1+i, n)));

	if (isNaN(payment) == false) {
		var payment = payment.toFixed(2);
		$('MONTHLY_PAYMENT').value = '$' + payment;
		$('MONTHLY_PAYMENT').style.color = 111111;
	}
}

function calcAPR() {
	alert('calcAPR()\n\nThis calculator has not been built yet.');

	// $('TOTAL_COST').value=9999.99;
}

function preQualify() {
	alert('preQualify()\n\nThis calculator has not been built yet.');

	// $('REQUIRED_INCOME').value=9999.99;
}

function simpleLoan() {
	alert('simpleLoan()\n\nThis calculator has not been built yet.');

	// $('MONTHLY_PAYMENT').value=9999.99;
}

function calcSavings() {
	alert('calcSavings()\n\nThis calculator has not been built yet.');

	// $('FINAL_BALANCE').value=9999.99;
}

function calcRetire() {
	alert('calcRetire()\n\nThis calculator has not been built yet.');

	// $('INVESTMENTS_REQUIRED').value=9999.99;
}

function errorCheck(field) {
	var valueToCheck = $(field).value;

	if (isNaN(valueToCheck)) {
		alert("You must enter a number in this field.");
		$(field).value = "";
		$(field).focus();
		$(field).select();
	}
}