// withdraw amount script March 208
	
  var rate;
  var mumber_payments;
 
  var start_balance;
  var end_balance;
  
  var withdraw_rate;
  var inflation_rate;
 
  var balance = new Array();
   var interval = new Array();
  
 
  
  function CurrencyFormatted(amount)
{
	var i = parseFloat(amount);
	if(isNaN(i)) { i = 0.00; }
	var minus = '';
	if(i < 0) { minus = '-'; }
	i = Math.abs(i);
	i = parseInt((i + .005) * 100);
	i = i / 100;
	s = new String(i);
	if(s.indexOf('.') < 0) { s += '.00'; }
	if(s.indexOf('.') == (s.length - 2)) { s += '0'; }
	s = minus + s;
	return s;
}
// end of function CurrencyFormatted()

function CommaFormatted(amount)
{
	var delimiter = ","; // replace comma if desired
	var a = amount.split('.',2)
	var d = a[1];
	var i = parseInt(a[0]);
	if(isNaN(i)) { return ''; }
	var minus = '';
	if(i < 0) { minus = '-'; }
	i = Math.abs(i);
	var n = new String(i);
	var a = [];
	while(n.length > 3)
	{
		var nn = n.substr(n.length-3);
		a.unshift(nn);
		n = n.substr(0,n.length-3);
	}
	if(n.length > 0) { a.unshift(n); }
	n = a.join(delimiter);
	if(d.length < 1) { amount = n; }
	else { amount = n + '.' + d; }
	amount = minus + amount;
	return amount;
}
// end of function CommaFormatted()
  
	
	
	function formatCurrency(strValue)
{
	strValue = strValue.toString().replace(/\$|\,/g,'');
	dblValue = parseFloat(strValue);

	blnSign = (dblValue == (dblValue = Math.abs(dblValue)));
	dblValue = Math.floor(dblValue*100+0.50000000001);
	intCents = dblValue%100;
	strCents = intCents.toString();
	dblValue = Math.floor(dblValue/100).toString();
	if(intCents<10)
		strCents = "0" + strCents;
	for (var i = 0; i < Math.floor((dblValue.length-(1+i))/3); i++)
		dblValue = dblValue.substring(0,dblValue.length-(4*i+3))+','+
		dblValue.substring(dblValue.length-(4*i+3));
	return (((blnSign)?'':'-') + '$' + dblValue + '.' + strCents);
} 
 
  
  function calculate(form) {
	var runout;
  start_balance = form.start_balance.value;
  //end_balance = form.end_balance.value;
  rate = form.rate.value;
  withdraw_rate = form.withdraw_rate.value;
  inflation_rate = form.inflation_rate.value;
  number_payments = form.number_payments.value;
  
  
    
  for (var i = 0; i < number_payments; i++)
     {
	 balance[i] = 0;
	 }
  balance[0] = start_balance;
  
 //document.write(number_payments);
  //document.write("<br>");
  
   for (var i = 0; i < number_payments; i++)
   {
    balance[i] = balance[i]*(1 + (rate/100));
   if (form.interval[0].checked == true)  { // percent withdrawal
	  
	   if( i == 0)
	   {
	    balance[i] = balance[i]*(1 -  (withdraw_rate/100));
	   }
	   else
	   {
	   balance[i] = balance[i]*(1 -  ((withdraw_rate/100) + (inflation_rate/100)));
	   }
    }
	 if (form.interval[1].checked == true)  { //dollar withdrawal
	  balance[i] = balance[i] - withdraw_rate;
	  withdraw_rate = withdraw_rate*(1 + (inflation_rate/100));
  
	 if (balance[i] <= 0 )
	   {
          balance[i] = 0 ;
       }
	   
     }
	 balance[i+1] = balance[i];
   
  
   }
  end_balance = Math.round(100*balance[number_payments])/100;
 
  var result = CurrencyFormatted(end_balance);
  form.end_balance.value = CommaFormatted(result);
  var result = formatCurrency(end_balance);
  form.end_balance.value = result;
  }
	
 
// Copyright ©Richard A. Howard 2003-2007