[Plugin: NextGEN Gallery] Prevent showing/copying full size pictures

Is there a simple way to restrict the size of the pictures shown in NextGEN Gallery? It would be marvelous to be able to upload full size pictures, have NextGEN resize the image before viewing – and restrict the possibility to download the full size image… Is this possible? If not, it is a suggestion for future versions of NextGEN. Why not generate cashed, shrinked images to send to the browser? Even though I restrict the size of the pictures to 1024 px horizontal, it is now possible to right click the image and download the 3xxx px version.