I use my TEXT attributes, which act as the customers personalisation to be engraved on to whatever product they have selected, due to the nature of the products i cannot accept capital letters only lowercase or propercase strings.

Im looking for a way to ensure that the customer does not enter all capital letters. I also cannot use javascript to automatically force proper or lower caps as there is no way of logically seeing which words should be automatically capitalised ie names etc and which shouldnt ie simple sentences.

so i need to use validation of some kind to alert the customer that their input is in all caps and needs to be changed in order to be submitted, can anyone point me either to the correct file to edit the validation, a mod which may help or any advice in general

thanks!