/* roicalculatordealer*/
function calculate_roi(roiform) {
  var customer = roiform.customer.value;
  var cleaningsolution = roiform.cleaningsolution.value;
  var services = roiform.services.value;
  var days = roiform.days.value;
  var locations = roiform.locations.value;
  var cu = Math.round(customer*100)/100;
  var cl = Math.round(cleaningsolution*100)/100;
  var profit = Math.round((cu-cl)*(services)*(days)*(locations)*100)/100;
  document.roiform.grosssales.value = '$'+addCommas(profit.toFixed(2));
}

function addCommas(cashvalue) {
  var sRegExp = new RegExp('(-?[0-9]+)([0-9]{3})');
  while(sRegExp.test(cashvalue)) {
    cashvalue = cashvalue.replace(sRegExp, '$1,$2');
  }
  return cashvalue;
}