<!--
//*******************************************
//DO NOT REMOVE THIS COPYWRITE INFO!
//Simple Loan Calculator
//1998 Daniel C. Peterson ALL RIGHTS RESERVED
//Created: 08/21/1998
//Last Modified: 07/30/2002
//This script may not be copied, edited, distributed or reproduced
//without express written permission from
//Daniel C. Peterson of Web Winder Website Services
//For commercial use rates, contact:
//Dan Peterson:
//Web Winder Website Services
//P.O. Box 11
//Bemidji, MN  56619
//dan@webwinder.com
//http://www.webwinder.com
//Commercial User Licence #:2121-581-66-566
//Commercial Licence Date:2005-03-17
//*******************************************



function stripNum(num) {

var iPercent
var iDollar
var iSpace
var iComma
var numLength = num.length

//lalalla Line #114

if(numLength > 0) {

   num=num.toString();

   iPercent = num.indexOf("%");
   if(iPercent >= 0) {
      num=num.substring(0,iPercent) + "" + num.substring(iPercent + 1,numLength);
      numLength=num.length;
      }
   iDollar = num.indexOf("$");
   if(iDollar >= 0) {
      num=num.substring(0,iDollar) + "" + num.substring(iDollar + 1,numLength);
      numLength=num.length;
      }
   iSpace = num.indexOf(" ");
   if(iSpace >= 0) {
      num=num.substring(0,iSpace) + "" + num.substring(iSpace + 1,numLength);
      numLength=num.length;
      }
   iComma = num.indexOf(",");
   if(iComma >= 0) {
      while(iComma >=1) {
         num=num.substring(0,iComma) + "" + num.substring(iComma + 1,numLength);
         numLength=num.length;
         iComma = num.indexOf(",");
      }
      }

      num = eval(num);


} else {

num = 0;

}

return num;

}




function formatNumber(num) {

var isNeg=0;

    if(num < 0) {
       num=num*-1;
       isNeg=1;
    }

    
	onum=Math.round(num*100)/100;
		
	integer=Math.floor(onum);

	if (Math.ceil(onum) == integer) {
		decimal="00";
	} else{
		decimal=Math.round((onum-integer)*100)
	}
	decimal=decimal.toString();
	if (decimal.length<2) decimal="0"+decimal;

	integer=integer.toString();
	var tmpnum="";
	var tmpinteger="";
	var y=0;

	for (x=integer.length;x>0;x--) {
		tmpnum=tmpnum+integer.charAt(x-1);
		y=y+1;
		if (y==3 & x>1) {
			tmpnum=tmpnum+",";
			y=0;
		}
	}

	for (x=tmpnum.length;x>0;x--) {
		tmpinteger=tmpinteger+tmpnum.charAt(x-1);
	}
		
	finNum=tmpinteger+"."+decimal;

    if(isNeg == 1) {
       finNum = "-" + finNum;
    }

	return finNum;
}


function computeForm(form) {

if (form.principal.value == null || form.principal.value.length == 0) {
   alert("Please enter the loan's principal amount.");
   form.principal.focus();
} else
if (form.interest.value == null || form.interest.value.length == 0) {
   alert("Please enter the loan's annual interest rate.");
   form.interest.focus();
} else
if (form.payments.value == null || form.payments.value.length == 0) {
   alert("Please enter the loan's term in number of years.");
   form.payments.focus();
} else {

   var Vprincipal = stripNum(form.principal.value);

    var i = stripNum(form.interest.value);

    if (i > 0) {

        i = i / 100.0;

    }

    i /= 12;

   var Vpayments = stripNum(form.payments.value);
   var noMonths = Vpayments * 12;

    var pow = 1;

    for (var j = 0; j < noMonths; j++)

        pow = pow * (1 + i);

     var Vpayment = (Vprincipal * pow * i) / (pow - 1);

    form.payment.value = "$" + formatNumber(Vpayment);

    var Vtotalint = ((Vpayment * noMonths) - Vprincipal);

   form.totalint.value = "$" + formatNumber(Vtotalint);
   }
}
//-->