// JavaScript Document

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_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_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];}
}

var popUpWin=0;
function popUpWindow(URLStr, left, top, width, height)
{
  if(popUpWin)
  {
    if(!popUpWin.closed) popUpWin.close();
  }
  popUpWin = open(URLStr, 'popUpWin', 'toolbar=no,location=no,directories=no,status=no,menub ar=no,scrollbar=no,resizable=no,copyhistory=yes,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
}

function dwfaq_getCSSPropertyValue(obj,cP,jP){//v1.1 
//Copyright © 2004-2005 Angela C. Buraglia & DWfaq.com
//All Rights Reserved. Not for distribution. support@dwfaq.com
//Support Newsgroup: news://support.dwfaq.com/support
	if(typeof(obj)!='object'){var obj=document.getElementById(obj);}
	if(typeof(obj.currentStyle)!='object'){
		return (typeof(document.defaultView) == 'object' && document.defaultView.getComputedStyle(obj,''))?
		document.defaultView.getComputedStyle(obj,'').getPropertyValue(cP):
		obj.style.getPropertyValue(cP);}
	else{
		return (navigator.appVersion.indexOf('Mac')!=-1)?
		obj.currentStyle.getPropertyValue(cP):
		obj.currentStyle.getAttribute((jP)?jP:cP);}
}

function dwfaq_ToggleOMaticDisplay(){//v1.0
//Copyright © 2004 Angela C. Buraglia & DWfaq.com
//All Rights Reserved. Not for distribution. support@dwfaq.com
//Support Newsgroup: news://support.dwfaq.com/support
	var obj,cS,args=dwfaq_ToggleOMaticDisplay.arguments;document.MM_returnValue=(typeof(args[0].href)!='string')?true:false;
	for(var i=1;i<args.length;i++){obj=document.getElementById(args[i]);
		if(obj){cS=dwfaq_getCSSPropertyValue(obj,'display');
			if(!obj.dwfaq_OD){obj.dwfaq_OD=(cS!='none'&&cS!='')?cS:(obj.tagName.toUpperCase()=='TR' && cS!=='none')?'':
			(obj.tagName.toUpperCase()=='TR' && typeof(obj.currentStyle)!='object')?'table-row':'block';}
			obj.style.display=(cS!='none')?'none':obj.dwfaq_OD}}
}

function dwfaq_ToggleOMaticVisibility(){//v1.0
//Copyright © 2004 Angela C. Buraglia & DWfaq.com
//All Rights Reserved. Not for distribution. support@dwfaq.com
//Support Newsgroup: news://support.dwfaq.com/support
	var obj,cS,args=dwfaq_ToggleOMaticVisibility.arguments;document.MM_returnValue=(typeof(args[0].href)!='string')?true:false;
	for(var i=1;i<args.length;i++){obj=document.getElementById(args[i]);
		if(obj){cS=dwfaq_getCSSPropertyValue(obj,'visibility');
			if(!obj.dwfaq_OV){obj.dwfaq_OV=(cS=='inherit')?'inherit':'visible';}
			obj.style.visibility=(cS!='hidden'&&cS!='collapse')?'hidden':obj.dwfaq_OV;}}
}

//Mortgage calculator - calculates the monthly payment based on 80% list price, user input interest rate and user chosen
//mortgage term.

function calculate() {
var principal = document.CalcMortgage.principal.value;
var interest = document.CalcMortgage.interest.value / 100 / 12;
var term = document.CalcMortgage.term.value * 12;
var x = Math.pow(1 + interest, term);
var monthly = (principal*x*interest)/(x-1);

	if (!isNaN(monthly) &&
		(monthly != Number.POSITIVE_INFINITY) &&
		(monthly != Number.NEGATIVE_INFINITY)) {
		
			document.CalcMortgage.total.value = round(monthly);
		}
		else {
			document.CalcMortgage.total.value = "";
		}
	}
//Method to round to two decimal places.

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