<!-- Begin JS

function checkformMortgages(form){
if ((form.fstLoanRate.value == "") || isNaN(form.fstLoanRate.value))
	alert('Please enter a valid 1st Loan Rate value');
else if ((form.fstLoanAmount.value == "") || isNaN(form.fstLoanAmount.value))
	alert('Please enter a valid 1st Loan Amount value');
else if ((form.sndLoanRate.value == "") || isNaN(form.sndLoanRate.value))
	alert('Please enter a valid 2nd Loan Rate value');
else if ((form.sndLoanAmount.value == "") || isNaN(form.sndLoanAmount.value))
	alert('Please enter a valid 2nd Loan Amount value');
else if (isNaN(form.trdLoanAmount.value))
	alert('Please enter a valid 3rd Loan Rate value');
else if (isNaN(form.trdLoanAmount.value))
	alert('Please enter a valid 3rd Loan Amount value');
else
	return true;
return false;
}

function calculateBlendedMortgages(form) {
pageTracker._trackPageview("/goal/click/calc/BlendedRateMortgages");

if (checkformMortgages(form)){
	if ((form.trdLoanAmount.value == ""))
		form.trdLoanRate.value = 0;
	if ((form.trdLoanRate.value == ""))
		form.trdLoanRate.value = 0;

	total = form.fstLoanAmount.value/1 + form.sndLoanAmount.value/1 + form.trdLoanAmount.value/1;
	first = (form.fstLoanAmount.value * form.fstLoanRate.value) / 100;
	second = (form.sndLoanAmount.value * form.sndLoanRate.value) / 100;
	third = (form.trdLoanAmount.value * form.trdLoanRate.value) / 100;
	blended = (first + second + third) / total;
	form.blendedLoanRate.value = Math.round(blended * 10000)/100;
	}
}

function checkformSingleSumRate(form){
if ((form.fstInterestRate.value == "") || isNaN(form.fstInterestRate.value))
	alert('Please enter a valid 1st Interest Rate value');
else if ((form.fstPeriods.value == "") || isNaN(form.fstPeriods.value))
	alert('Please enter a valid number of 1st periods value');
else if ((form.sndInterestRate.value == "") || isNaN(form.sndInterestRate.value))
	alert('Please enter a valid 2nd Interest Rate value');
else if ((form.sndPeriods.value == "") || isNaN(form.sndPeriods.value))
	alert('Please enter a valid number of 2nd periods value');
else
	return true;
	
return false;
}

function calculateBlendedSingleSumRate(form) {
pageTracker._trackPageview("/goal/click/calc/BlendedRateSingleSumRate");

if (checkformSingleSumRate(form)){
	totalPeriods = form.fstPeriods.value/1 + form.sndPeriods.value/1;
	first = Math.pow(1+(form.fstInterestRate.value/totalPeriods/100), form.fstPeriods.value);
	second = Math.pow(1+(form.sndInterestRate.value/totalPeriods/100), form.sndPeriods.value);
	blended = (first * second) - 1;
	form.blendedSingleSumRate.value = Math.round(blended * 10000)/100;
	}
}

// End JS-->