function value_pass()
{
var wind;
var a;
a="xxxxxxxx";

	wind=window.open("howmuchdoisaveby_makingextrapayments_p.php?y="+document.form1.current_mortgage_amount.value+a+document.form1.interest_rate.value+a+document.form1.current_monthly_payment.value+a+document.form1.extra_payment.value+a+document.form1.result1.value+a+document.form1.result2.value+a+document.form1.result3.value,"aa","location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=612,height=792");

}



function formatCurrency1(num) {
num = num.toString().replace(/\%|\,/g,'');
if(isNaN(num))
num = "0";
sign = (num == (num = Math.abs(num)));
num = Math.floor(num*100+0.50000000001);
cents = num%100;
num = Math.floor(num/100).toString();
if(cents<10)
cents = "0" + cents;
for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
num = num.substring(0,num.length-(4*i+3))+','+
num.substring(num.length-(4*i+3));
return (((sign)?'':'-') + num + '.' + cents + '%');
}






function formatCurrency(num) {
num = num.toString().replace(/\$|\,/g,'');
if(isNaN(num))
num = "0";
sign = (num == (num = Math.abs(num)));
num = Math.floor(num*100+0.50000000001);
cents = num%100;
num = Math.floor(num/100).toString();
if(cents<10)
cents = "0" + cents;
for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
num = num.substring(0,num.length-(4*i+3))+','+
num.substring(num.length-(4*i+3));
return (((sign)?'':'-') + '$' + num + '.' + cents);
}





function converIt1(numstring)
{

  var retval="";
  arr=numstring.split(""); 
  for(var i=0; i< arr.length;i++)
  {
    
    if(arr[i].search(/[% ,]/) == -1)
	{
	  
      retval += arr[i].toString();
	}
  }
 var z=parseInt(retval);
 var z1=parseFloat(retval);
 //alert(z);
 //alert(z1);
  return retval;

}





function converIt(numstring)
{

  var retval="";
  arr=numstring.split(""); 
  for(var i=0; i< arr.length;i++)
  {
    
    if(arr[i].search(/[$ ,]/) == -1)
	{
	  
      retval += arr[i].toString();
	}
  }
 var z=parseInt(retval);
 var z1=parseFloat(retval);
 //alert(z);
 //alert(z1);
  return retval;

}



// Original JavaScript code by Duncan Crombie: dcrombie@chirp.com.au
   // Please acknowledge use of this code by including this header.

   // CONSTANTS
  var separator = ",";  // use comma as 000's separator
  var decpoint = ".";  // use period as decimal point
  var percent = "%";
  var currency = "$";  // use dollar sign for currency

  function formatNumber(number, format, print) {  // use: formatNumber(number, "format")
    if (print) document.write("formatNumber(" + number + ", \"" + format + "\")<br>");

    if (number - 0 != number) return null;  // if number is NaN return null
    var useSeparator = format.indexOf(separator) != -1;  // use separators in number
    var usePercent = format.indexOf(percent) != -1;  // convert output to percentage
    var useCurrency = format.indexOf(currency) != -1;  // use currency format
    var isNegative = (number < 0);
    number = Math.abs (number);
    if (usePercent) number *= 100;
    format = strip(format, separator + percent + currency);  // remove key characters
    number = "" + number;  // convert number input to string

     // split input value into LHS and RHS using decpoint as divider
    var dec = number.indexOf(decpoint) != -1;
    var nleftEnd = (dec) ? number.substring(0, number.indexOf(".")) : number;
    var nrightEnd = (dec) ? number.substring(number.indexOf(".") + 1) : "";

     // split format string into LHS and RHS using decpoint as divider
    dec = format.indexOf(decpoint) != -1;
    var sleftEnd = (dec) ? format.substring(0, format.indexOf(".")) : format;
    var srightEnd = (dec) ? format.substring(format.indexOf(".") + 1) : "";

     // adjust decimal places by cropping or adding zeros to LHS of number
    if (srightEnd.length < nrightEnd.length) {
      var nextChar = nrightEnd.charAt(srightEnd.length) - 0;
      nrightEnd = nrightEnd.substring(0, srightEnd.length);
      if (nextChar >= 5) nrightEnd = "" + ((nrightEnd - 0) + 1);  // round up

 // patch provided by Patti Marcoux 1999/08/06
      while (srightEnd.length > nrightEnd.length) {
        nrightEnd = "0" + nrightEnd;
      }

      if (srightEnd.length < nrightEnd.length) {
        nrightEnd = nrightEnd.substring(1);
        nleftEnd = (nleftEnd - 0) + 1;
      }
    } else {
      for (var i=nrightEnd.length; srightEnd.length > nrightEnd.length; i++) {
        if (srightEnd.charAt(i) == "0") nrightEnd += "0";  // append zero to RHS of number
        else break;
      }
    }

     // adjust leading zeros
    sleftEnd = strip(sleftEnd, "#");  // remove hashes from LHS of format
    while (sleftEnd.length > nleftEnd.length) {
      nleftEnd = "0" + nleftEnd;  // prepend zero to LHS of number
    }

    if (useSeparator) nleftEnd = separate(nleftEnd, separator);  // add separator
    var output = nleftEnd + ((nrightEnd != "") ? "." + nrightEnd : "");  // combine parts
    output = ((useCurrency) ? currency : "") + output + ((usePercent) ? percent : "");
    if (isNegative) {
      // patch suggested by Tom Denn 25/4/2001
      output = (useCurrency) ? "(" + output + ")" : "-" + output;
    }
    return output;
  }

  function strip(input, chars) {  // strip all characters in 'chars' from input
    var output = "";  // initialise output string
    for (var i=0; i < input.length; i++)
      if (chars.indexOf(input.charAt(i)) == -1)
        output += input.charAt(i);
    return output;
  }

  function separate(input, separator) {  // format input using 'separator' to mark 000's
    input = "" + input;
    var output = "";  // initialise output string
    for (var i=0; i < input.length; i++) {
      if (i != 0 && (input.length - i) % 3 == 0) output += separator;
      output += input.charAt(i);
    }
    return output;
  }





function nper(pva1,rb1,pmtc1) 
	{
   var a=pva1;
   var b=rb1;  
   var c=pmtc1;
  
	var result;
	result=a*b/c;	
	if(result<1)
	{
	result=1-result;	
	}
	else
	{
	result=result-1;
	}
	result=Math.abs(result);	
	result=Math.log(result);
	
	

	var result1;
	result1=1+b;	
	result1=1/result1;	
	result1=Math.abs(result1);	
	result1=Math.log(result1);
	

	var result2;
	result2=result/result1;
	result2=result2/12;	
	return result2;
	
	
    }


function monpay(pv1,rate1,pmt1,extra1)
{
var pv=parseFloat(converIt(pv1));
var rate=parseFloat(converIt1(rate1));
var pmt=parseFloat(converIt(pmt1));
var extra=parseFloat(converIt(extra1));
var ep;
ep=+pmt+(+extra);

rate/=1200;
var result11;
result11=nper(pv,rate,pmt);
result11=Math.round(result11);



var result12;
result12=nper(pv,rate,ep);
result12=Math.round(result12);



var result13;
result13=result11-result12;
 
var result;
result=result13*pmt*12;

//forg1.innerText=" "+formatCurrency(extra);
document.getElementById("forg1").innerHTML=" "+formatCurrency(extra);
document.form1.result1.value=" "+formatCurrency(extra);
//forg2.innerText=result12;
document.form1.result2.value=result12;
document.getElementById("forg2").innerHTML=result12;
//save.innerText=formatCurrency(converIt(formatNumber(result,"#.##")));
document.getElementById("save").innerHTML=formatCurrency(converIt(formatNumber(result,"#.##")));
document.form1.result3.value=formatCurrency(converIt(formatNumber(result,"#.##")));

}