// interest rate  script december 2007
	
  var amount;
  var rate;
  var number_years;
  var future_value;
  
  function calculate(form) {
  amount = form.amount.value;
  future_value = form.future_value.value;
  number_years = form.number_years.value;
  
  var x = 1/number_years;
  var y =  future_value/amount;
  rate = Math.pow(y,x) - 1;
  rate = rate*100,
  rate = Math.round(rate*100)/100;
  form.rate.value = rate; 
  }



	// Copyright ©Richard A. Howard 2003-2007