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) { //v4.01
  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);
  if(!x && d.getElementById) x=d.getElementById(n); 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 calculate() 
{
	var saleprice = document.loandata.saleprice.value;
	var downpayment = document.loandata.downpayment.value;
	//var principal = document.loandata.principal.value;
	var interest = document.loandata.interest.value /100 / 12;
	var payments = document.loandata.years.value * 12;
	
	var principal = saleprice - downpayment
	var x = Math.pow(1 + interest, payments);
	var monthly = (principal*x*interest)/(x-1);
	
	
	if (!isNaN( monthly ) && ( monthly != Number.POSITIVE_INFINITY ) && ( monthly != Number.NEGATIVE_INFINITY ) )
	{				
		document.loandata.payment.value = round( monthly );
		document.loandata.total.value = round( monthly * payments )
		document.loandata.totalinterest.value = round( ( monthly * payments ) - principal );
	}
	else 
	{
		document.loandata.payment.value = "";
		document.loandata.total.value = "";
		document.loandata.totalinterest.value = "";
	}

}

function round(x) 
{
	return Math.round(x*100)/100;
}

function popupwindow(type, num)
{
var url = '../../Homedisplay/Home Display/' + type + '/' + num;
homedisplaywindow = window.open(url, 'HomeDisp', 'width=752, height=553, resizable=yes');
homedisplaywindow.moveTo(screen.width/2-376,screen.height/2-276);
}