UNKNOWN { window: } UNKNOWN { if: "hidden")) { var field_value = form.elements[field_name].value; // LINE MOD: added 'field_size >0 &&' if ((field_size > 0 && field_value == '') || field_value.length < field_size) { error_message = error_message + "* " + message + "n"; error = true; } } } UNKNOWN { if: "hidden")) { var radio = form.elements[field_name]; for (var i=0; i