function InvalidMsg(inputbox){if(inputbox.value==''){inputbox.setCustomValidity('Required value !')}else if(inputbox.validity.rangeOverflow){var updated_overflow_text=invalid_html_five_message.rangeOverflow;updated_overflow_text=updated_overflow_text.replace("%max_per_item_quantity%",inputbox.max);updated_overflow_text=updated_overflow_text.replace("%item_quantity%",inputbox.value);inputbox.setCustomValidity(updated_overflow_text)}else if(inputbox.validity.rangeUnderflow){var updated_underflow_text=invalid_html_five_message.rangeUnderflow;updated_underflow_text=updated_underflow_text.replace("%min_per_item_quantity%",inputbox.min);updated_underflow_text=updated_underflow_text.replace("%item_quantity%",inputbox.value);inputbox.setCustomValidity(updated_underflow_text)}else{inputbox.setCustomValidity('')}return true}