function showHide(ElementID)
{
    var obj   = document.getElementById(ElementID);
    if (obj.style.display == 'none') {
        obj.style.display = 'block';
    }
    else {
        obj.style.display = 'none';
    }
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v3.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function Fcalc()
{
form=document.forms[0]
LoanAmount=form.LoanAmount.value
DownPayment=form.DownPayment.value
if(DownPayment==""){DownPayment=0}
if(DownPayment<0){DownPayment=0}
if(form.InterestRate.value == "")
{
	alert("Please provide an Annual Percentage Rate.")
	return
}
AnnualInterestRate=form.InterestRate.value/100
MonthRate=AnnualInterestRate/12
NumPayments= Math.round(form.NumberOfMonths.value)
var lang = (document.forms[0].term[0].checked) ? "month" : "year"
	if (lang == "year")
	{
		NumPayments = Math.round(NumPayments * 12)
	}

Desire=form.DesiredPayment.value
	if(Desire=="")
	{
		Desire=0
	}
	if(Desire>0)
	{
		//Prin=Math.round(Desire*(1-Math.pow((1+MonthRate),(-1*NumPayments)))/MonthRate*100)/100
		//DownPayment=Math.round((LoanAmount-Prin)*100)/100
		if(DownPayment == "")
		{
			DownPayment = 0
		}
		if(DownPayment>0)
		{
			//LoanAmount=Math.round(Prin*100)/100
			//DownPayment=0
			
			Prin=((Math.round(Desire*(1-Math.pow((1+MonthRate),(-1*NumPayments)))/MonthRate*100)/100) - DownPayment)
		}
		else
		{
			Prin=Math.round(Desire*(1-Math.pow((1+MonthRate),(-1*NumPayments)))/MonthRate*100)/100
		}
		LoanAmount=Math.round(Prin*100)/100
			
	}
form.LoanAmount.value=LoanAmount
form.DownPayment.value=DownPayment
Prin=Math.round((LoanAmount-DownPayment)*100)/100
form.Prin.value=Prin
MonthPayment=Math.round((Prin*MonthRate)/(1-Math.pow((1+MonthRate),(-1*NumPayments)))*100)/100
form.MonthlyPayment.value=MonthPayment
form.DesiredPayment.value="0"
}

function SetTerm()
{
var lang = (document.forms[0].term[0].checked) ? "month" : "year"
	if (lang != "year")
	{
		document.forms[0].NumberOfMonths.value = "60"
	}
	else
	{
		document.forms[0].NumberOfMonths.value = "30"
	}
	Fcalc()
}