function onChangeMoney(field) {
   var f = document.forms["calc_monetaryvalue"];
   if (field.id=="monetary_initial"  ||  field.id=="monetary_result") {
      InputMoney = new Money(f["monetary_initial"].value, f["monetary_initial_units"].value);
   }
   calc_value();
}

function calc_value() {
   f = document.forms["calc_monetaryvalue"];
   if (InputMoney != null) {
      val = InputMoney.getMoney(f["monetary_result_units"].value);
      f["monetary_result"].value = DisplayFormat(val);
   }
}