<!-- Hide from old browsers
// Copyright (C) 2001-2007 AngelicHost
// All rights reserved

function doSimple() {
  prin = 0; prin = ahparseFloat(document.simple.principle.value);
  rate = 0; rate = ahparsePercent(document.simple.rate.value);
  
  if(isNaN(prin) || prin <= 0 || document.simple.principle.value.length==0) {
    alert("Please enter a loan amount.  Do not include any characters that are not numbers");
    document.simple.principle.focus();
    document.simple.principle.select();
    return
  }

  if(isNaN(rate) || rate <= 0 || document.simple.rate.value.length==0) {
    alert("Please enter the interest rate");
    document.simple.rate.focus();
    document.simple.rate.select();
    return
  }
  
  var mrate = rate / 1200;
  var interest = prin * mrate;
  
  document.simple.result.value=fmtCurr(interest);
}
//-->