Even if you prevent right-click "set as background" or "copy", the viewer can still grab it with a good screen capture program, right? I know of no way to prevent the capture and reuse of anything posted on a webpage. It may not be appropriate for what you are doing, but we limit the viewing of proprietary documents on our commercial site with passwords. Here are a couple ideas: 1. Post your gallery in a password-protected section of your website. You control the password and thus who sees it. 2. Allow anyone to see a low-resolution or watermarked version of your art. Provide a download version of the art in a password encrypted zip file. You handout the password. Of course, password-protected pages and downloads aren't the best way to showoff your work.