<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<head><script Language='JavaScript'>
//*******************************************
//DO NOT REMOVE THIS COPYWRITE INFO!
//Adjustable Rate Mortgage Calculator
//2004 Daniel C. Peterson ALL RIGHTS RESERVED
//Created: 10/18/2004
//Last Modified: 11/02/2009
//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 #:7579-1662-134-1580
//Commercial Licence Date:2013-07-13
//*******************************************



function computeMonthlyPayment(prin, numPmts, intRate) {

var pmtAmt = 0;

if(intRate == 0) {
   pmtAmt = prin / numPmts;
} else {
     intRate = intRate / 100.0 / 12;

   var pow = 1;
   for (var j = 0; j < numPmts; j++)
      pow = pow * (1 + intRate);

   pmtAmt = (prin * pow * intRate) / (pow - 1);

}

return pmtAmt;

}




function sn(num) {

   num=num.toString();


   var len = num.length;
   var rnum = "";
   var test = "";
   var j = 0;

   var b = num.substring(0,1);
   if(b == "-") {
      rnum = "-";
   }

   for(i = 0; i <= len; i++) {

      b = num.substring(i,i+1);

      if(b == "0" || b == "1" || b == "2" || b == "3" || b == "4" || b == "5" || b == "6" || b == "7" || b == "8" || b == "9" || b == ".") {
         rnum = rnum + "" + b;

      }

   }

   if(rnum == "" || rnum == "-") {
      rnum = 0;
   }

   rnum = Number(rnum);

   return rnum;

}



function fns(num, places, comma, type, show) {

    var sym_1 = "$";
    var sym_2 = ""; 

    var isNeg=0;

    if(num < 0) {
       num=num*-1;
       isNeg=1;
    }

    var myDecFact = 1;
    var myPlaces = 0;
    var myZeros = "";
    while(myPlaces < places) {
       myDecFact = myDecFact * 10;
       myPlaces = Number(myPlaces) + Number(1);
       myZeros = myZeros + "0";
    }
    
	onum=Math.round(num*myDecFact)/myDecFact;
		
	integer=Math.floor(onum);

	if (Math.ceil(onum) == integer) {
		decimal=myZeros;
	} else{
		decimal=Math.round((onum-integer)* myDecFact)
	}
	decimal=decimal.toString();
	if (decimal.length<places) {
        fillZeroes = places - decimal.length;
	   for (z=0;z<fillZeroes;z++) {
        decimal="0"+decimal;
        }
     }

   if(places > 0) {
      decimal = "." + decimal;
   }

   if(comma == 1) {
	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;
   } else {
      finNum=integer+""+decimal;
   }

    if(isNeg == 1) {
       if(type == 1 && show == 1) {
          finNum = "-" + sym_1 + "" + finNum + "" + sym_2;
       } else {
          finNum = "-" + finNum;
       }
    } else {
       if(show == 1) {
          if(type == 1) {
             finNum = sym_1 + "" + finNum + "" + sym_2;
          } else
          if(type == 2) {
             finNum = finNum + "%";
          }

       }

    }

	return finNum;
}


function computeForm(report) {

   var Vprincipal = sn(document.calc.principal.value);
   var Vstart_rate = sn(document.calc.start_rate.value);
   var Vstart_months = sn(document.calc.start_months.value);
   var Vadjust_months = sn(document.calc.adjust_months.value);
   var Vadjust_amt = sn(document.calc.adjust_amt.value);
   var Vrate_cap = sn(document.calc.rate_cap.value);

   var alert_txt = "";

   if(Vprincipal == 0) {
      alert("Please enter the mortgage's principal amount.");
      document.calc.principal.focus();
   } else
   if(Vstart_rate == 0) {
      alert("Please enter the beginning annual interest rate.");
      document.calc.start_rate.focus();
   } else
   if(Vstart_months == 0) {
      alert("Please enter the number of months the rate will be fixed.");
      document.calc.start_months.focus();
   } else
   if(Vadjust_months == 0) {
      alert("Please enter the number of months between rate adjustments.");
      document.calc.adjust_months.focus();
   } else
   if(Vadjust_amt == 0) {
      alert_txt = "Please enter the expected amount of each adjustment (e.g., .25 if rates ";
      alert_txt += "are expected to increase or -.25 if rates are expected to decrease)";
      alert(alert_txt);
      document.calc.adjust_amt.focus();
   } else
   if(Vrate_cap == 0) {
      alert("Please enter the maximum allowable interest rate (rate cap).");
      document.calc.rate_cap.focus();
   } else {


      var VnumYears_idx = document.calc.numYears.selectedIndex;
      var VnumYears = document.calc.numYears.options[VnumYears_idx].value;
      var term_months = VnumYears * 12;

      var Vstart_pmt = computeMonthlyPayment(Vprincipal, term_months, Vstart_rate);

      if(Vstart_rate > 25) {
         alert("Please enter a starting interest rate that is less than or equal to 25.000%.");
         document.calc.start_rate.focus();
      } else
      if(Vrate_cap < 5) {
         alert("Please enter a rate cap that is greater than or equal to 5.000%.");
         document.calc.rate_cap.focus();
      } else
      if(Vrate_cap > 25) {
         alert("Please enter a rate cap that is less than or equal to 25.000%.");
         document.calc.rate_cap.focus();
      } else
      if(Vprincipal < 100) {
         alert("Please enter a mortgage loan amount that is greater than $100.");
         document.calc.principal.focus();
      } else
      if(Vprincipal > 100000000) {
         alert("Please enter a mortgage loan amount that is less than $100,000,000.");
         document.calc.principal.focus();
      } else
      if(Vstart_months > 120) {
         alert("Number of months before adjustments must be less than or equal to 120.");
         document.calc.start_months.focus();
      } else
      if(Vadjust_months > 12) {
         alert("Number of months between adjustments must be less than or equal to 12.");
         document.calc.adjust_months.focus();
      } else
      if(Vadjust_amt > 3) {
         alert("Rate adjustment amount must be less than or equal to 3.000%.");
         document.calc.adjust_amt.focus();
      } else
      if(Vadjust_amt < -3) {
         alert("Rate adjustment amount must be greater than or equal to -3.000%.");
         document.calc.adjust_amt.focus();
      } else {

         document.calc.start_pmt.value = fns(Vstart_pmt,2,1,1,1);

         var rate = Vstart_rate;
         var old_rate = Vstart_rate;
         var pmt = Vstart_pmt;
         var accum_pmts = 0;
         var new_rate = 0;
         var prin = Vprincipal;
         var int_port = 0;
         var accum_int = 0;
         var prin_port = 0;
         var accum_prin = 0;
         var cnt = 0;
         var adjust_nprs = 0;
         var new_term_months = 0;
         var i = 0;

         var pmtRows = "";

         while(cnt < term_months) {

            cnt += 1;

            if(cnt <= Vstart_months) {
               rate = Vstart_rate;
            } else {
               if((Number(cnt)-Number(1)) % Vadjust_months == 0) {
                  adjust_nprs += 1;
                  new_term_months = Number(term_months) - Number(cnt) + Number(1);
                  rate = Number(adjust_nprs * Vadjust_amt) + Number(Vstart_rate);
                  if(rate < 2) {
                     rate = 2;
                  }
                  if(rate > Vrate_cap) {
                     rate = Vrate_cap;
                  }
                  pmt = computeMonthlyPayment(prin, new_term_months, rate);
               }
            }



            i = rate / 100 / 12;

            if(cnt < term_months) {

               int_port = Math.round(prin * i * 100) / 100;
               accum_int += int_port;
               prin_port= Number(pmt) - Number(int_port);
               accum_prin = Number(accum_prin) + Number(prin_port);
               prin = Number(prin) - Number(prin_port);

            } else {

               int_port = Math.round(prin * i * 100) / 100;
               accum_int += int_port;
               prin_port= prin;
               accum_prin = Number(accum_prin) + Number(prin_port);
               prin = Number(prin) - Number(prin_port);
               pmt = Number(prin_port) + Number(int_port);
            }

            accum_pmts += pmt;

            if(report == 1) {
               pmtRows += "<tr><td align='right'><font face='arial'><small>" + cnt + "</small>";
               pmtRows += "</font></td><td align='right'><font face='arial'>";
               pmtRows += "<small>" + fns(rate,2,0,2,1) + "</small></font></td>";
               pmtRows += "<td align='right'><font face='arial'><small>" + fns(pmt,2,1,1,1) + "</small>";
               pmtRows += "</font></td><td align='right'><font face='arial'>";
               pmtRows += "<small>" + fns(prin_port,2,1,1,1) + "</small></font></td>";
               pmtRows += "<td align='right'><font face='arial'>";
               pmtRows += "<small>" + fns(int_port,2,1,1,1) + "</small></font></td>";
               pmtRows += "<td align='right'><font face='arial'>";
               pmtRows += "<small>" + fns(prin,2,1,1,1) + "</small></font></td></tr>";
            }

         }


         document.calc.total_pmts.value = fns(accum_pmts,2,1,1,1);
         document.calc.total_int.value = fns(accum_int,2,1,1,1);
         if(pmt > Vstart_pmt) {
            document.calc.max_pmt.value = fns(pmt,2,1,1,1);
         } else {
            document.calc.max_pmt.value = fns(Vstart_pmt,2,1,1,1);
         }

         if(report == 1) {


            var part1 = "<html><head><title>Amortization Schedule</title></head>";
            part1 += "<b";
            part1 += "od";
            part1 += "y bgcolor= '#FFFFFF'>";
            part1 += "<br /><br /><center><font face='arial'><big>";
            part1 += "<strong>Adjustable Rate Mortgage Summary</strong></big></font></center><br />";


            var part2 = "<center><table border=1 cellpadding=2 cellspacing=0 bordercolor='#EEEEEE'>";
            part2 += "<tr><td colspan=4><font face='arial'><small>Mortgage loan amount:</small></font></td>";
            part2 += "<td colspan='2' align='right'><font face='arial'>";
            part2 += "<small>" + fns(Vprincipal,2,1,1,1) + "</small></font></td></tr>";
            part2 += "<tr><td colspan=4><font face='arial'><small>Mortgage term:</small></font></td>";
            part2 += "<td colspan='2' align='right'><font face='arial'><small>" + VnumYears + " years</small>";
            part2 += "</font></td></tr><tr><td colspan=4><font face='arial'><small>Beginning interest rate:";
            part2 += "</small></font></td><td colspan='2' align='right'><font face='arial'>";
            part2 += "<small>" + fns(Vstart_rate,3,0,2,1) + "</small></font></td></tr>";
            part2 += "<tr><td colspan=4><font face='arial'><small>Beginning monthly payment:";
            part2 += "</small></font></td><td colspan='2' align='right'><font face='arial'>";
            part2 += "<small>" + fns(Vstart_pmt,2,1,1,1) + "</small></font></td></tr>";
            part2 += "<tr><td colspan=4><font face='arial'><small>Interest rate cap:</small>";
            part2 += "</font></td><td colspan='2' align='right'><font face='arial'>";
            part2 += "<small>" + fns(Vrate_cap,3,0,2,1) + "</small></font></td></tr>";
            part2 += "<tr><td colspan=4><font face='arial'><small>Expected rate adjustment amount:";
            part2 += "</small></font></td><td colspan='2' align='right'><font face='arial'>";
            part2 += "<small>" + fns(Vadjust_amt,2,0,2,1) + "</small></font></td></tr>";
            part2 += "<tr><td colspan=4><font face='arial'><small>Initial fixed rate period:</small>";
            part2 += "</font></td><td colspan='2' align='right'><font face='arial'>";
            part2 += "<small>" + Vstart_months + " months</small></font></td></tr><tr>";
            part2 += "<td colspan=4><font face='arial'><small>";
            part2 += "Adjustment period:</small></font></td><td colspan='2' align='right'>";
            part2 += "<font face='arial'><small>" + Vadjust_months + " months</small>";
            part2 += "</font></td></tr><tr><td colspan=4><font face='arial'><small>Total of all";
            part2 += " monthly payments:</small></font></td><td colspan='2' align='right'>";
            part2 += "<font face='arial'><small>" + fns(accum_pmts,2,1,1,1) + "</small>";
            part2 += "</font></td></tr><tr><td colspan=4><font face='arial'><small>Total interest:";
            part2 += "</small></font></td><td colspan='2' align='right'><font face='arial'>";
            part2 += "<small>" + fns(accum_int,2,1,1,1) + "</small></font></td></tr>";
            part2 += "<tr><td colspan=6><center><font face='arial'><strong>Schedule of Payments</strong>";
            part2 += "</font><br /><font face='arial'><small><small>Please allow for slight ";
            part2 += "rounding differences.</small></small></font></center></td></tr>";
            part2 += "<tr bgcolor='silver'><td align='center'><font face='arial'><small>";
            part2 += "<strong>Pmt #</strong></small></font></td><td align='center'><font face='arial'>";
            part2 += "<small><strong>Rate</strong></small></font></td><td align='center'>";
            part2 += "<font face='arial'><small><strong>Payment</strong></small></font></td>";
            part2 += "<td align='center'><font face='arial'><small><strong>Principal</strong></small>";
            part2 += "</font></td><td align='center'><font face='arial'><small><strong>Interest</strong>";
            part2 += "</small></font></td><td align='center'><font face='arial'><small>";
            part2 += "<strong>Balance</strong></small></font></td></tr>";

            var part4 = "<tr><td colspan='2'><font face='arial'><small><strong>Grand Total</strong></small>";
            part4 += "</font></td><td align='right'><font face='arial'><small>";
            part4 += "<strong>" + fns(accum_pmts,2,1,1,1) + "</strong></small></font>";
            part4 += "</td><td align='right'><font face='arial'><small>";
            part4 += "<strong>" + fns(accum_prin,2,1,1,1) + "</strong></small></font></td>";
            part4 += "<td align='right'><font face='arial'><small>";
            part4 += "<strong>" + fns(accum_int,2,1,1,1) + "</strong></small></font></td>";
            part4 += "<td> </td></tr></table><br /><center><form method='post'>";
            part4 += "<input type='button' value='Close Window' onClick='window.close()'>";
            part4 += "</form></center></body></html>";

            var schedule = (part1 + "" + part2 + "" + pmtRows + "" + part4 + "");

            reportWin = window.open("","","width=500,height=400,toolbar=yes,menubar=yes,scrollbars=yes");

            reportWin.document.write(schedule);

            reportWin.document.close();

         }
      }
   }
}

function clear_results(form) {

   document.calc.start_pmt.value = "";
   document.calc.total_pmts.value = "";
   document.calc.total_int.value = "";
   document.calc.max_pmt.value = "";
}</script>

<meta content="text/html; charset=unicode" http-equiv="Content-Type" />
<title>Untitled 1</title>
<link href="../css/csstablestyle.css" rel="stylesheet" type="text/css" />

</head>

<body>
<form name="calc" method="post" action="#">

<table border='1' width='50%' cellpadding='4' cellspacing='0'  >
<tbody>

<tr> 
<td colspan="2" align="center">
<caption>Adjustable Rate Mortgage Calculator</caption>
</tr>
<tr> 
<td colspan="2">
<font face='arial' size='2' color='#000000'>
This calculator will help you to determine what your adjustable rate mortgage payment will be. 
<p>

</p>
</font> 
</td>
</tr>

<tr> 
<td   nowrap>
<font face='arial' size='2' color='#000000'>Mortgage loan amount:</font>
</td>
<td align="center"  >
<input type="text" name="principal" size="15" value="150000" onKeyUp="clear_results(this.form)" />
</td>
</tr>

<tr> 
<td   nowrap>
<font face='arial' size='2' color='#000000'>Beginning interest rate (%):</font>
</td>
<td align="center"  >
<input type="text" name="start_rate" size="15" value="6" onKeyUp="clear_results(this.form)" />
</td>
</tr>

<tr> 
<td   nowrap>
<font face='arial' size='2' color='#000000'>Mortgage loan term:</font>
</td>
<td align="center"  >
<select name="numYears" size="1" onChange="clear_results(this.form)">
<option value="30" selected>30 years</option>
<option value="25">25 years</option>
<option value="20">20 years</option>
<option value="15">15 years</option>
<option value="12">12 years</option>
<option value="10">10 years</option>
<option value="5">5 years</option>
</select>
</td>
</tr>

<tr> 
<td   nowrap>
<font face='arial' size='2' color='#000000'>Number of months before first rate adjustment:</font>
</td>
<td align="center"  >
<input type="text" name="start_months" size="15" value="36" onKeyUp="clear_results(this.form)" />
</td>
</tr>

<tr> 
<td   nowrap>
<font face='arial' size='2' color='#000000'>Number of months between adjustments:</font>
</td>
<td align="center"  >
<input type="text" name="adjust_months" size="15" value="12" onKeyUp="clear_results(this.form)" />
</td>
</tr>

<tr> 
<td   nowrap>
<font face='arial' size='2' color='#000000'>Expected adjustment (%):</font>
</td>
<td align="center"  >
<input type="text" name="adjust_amt" size="15" value=".25" onKeyUp="clear_results(this.form)" />
</td>
</tr>

<tr> 
<td   nowrap>
<font face='arial' size='2' color='#000000'>Interest rate cap (%):</font>
</td>
<td align="center"  >
<input type="text" name="rate_cap" size="15" value="12" onKeyUp="clear_results(this.form)" />
</td>
</tr>

<tr>
<td   colspan="2" align="center">
<input type="button" name="compute" value="Mortgage Payment" onClick="computeForm(0)" />
<input type="reset" value="Reset" />
</td>
</tr>

<tr> 
<td   nowrap>
<font face='arial' size='2' color='#000000'>Beginning monthly principal and interest payment:</font>
</td>
<td align="center"  >
<input type="text" name="start_pmt" size="15" />
</td>
</tr>

<tr> 
<td   nowrap>
<font face='arial' size='2' color='#000000'>Total monthly payments:</font>
</td>
<td align="center"  >
<input type="text" name="total_pmts" size="15" />
</td>
</tr>

<tr> 
<td   nowrap>
<font face='arial' size='2' color='#000000'>Total interest:</font>
</td>
<td align="center"  >
<input type="text" name="total_int" size="15" />
</td>
</tr>

<tr> 
<td   nowrap>
<font face='arial' size='2' color='#000000'>Maximum monthly payment:</font>
</td>
<td align="center"  >
<input type="text" name="max_pmt" size="15" />
</td>
</tr>


<tr>
<td   colspan="2" align="center">
<input type="button" name="compute" value="P&I Amortization" onClick="computeForm(1)" />
</td>
</tr>



</tbody>
</table>
</form>
</body>

</html>