Create a modifed Zoo rating element for Joomla

This project requires very good knowledge of the Zoo component for Joomla The Yoo Zoo component for Joomla 3 contains a standard element for rating a Zoo item. This rating element restricts voting by IP address, so users from a single IP can only vote once. This is a problem if voting from within large institutions with a common IP. Elements are found in /media/zoo/elements or /media/zoo/applications/APPNAME/elements For this project, I would like to create a new element to be placed either in the core elements folder or the elements folder of a particular Zoo application (called rating_pro) which restricts repeat voting not by IP but by cookie (expires in say 1 month). Ideally this cookie mechanism should be self contained to the element folder for rating_pro and should not require any other Zoo modifications. As any other Zoo element, it should be made available simply by placing the rating_pro folder in one of the above elements folders.