It is possible, you must create a new kind of browser, that doesn't allow operations like cut'n'paste, save and print. That browser should also be the only allowed to communicate with your web server... It doesn't seem a practical approach, does it? A solution based on some javascript trick will not stop smart users; the only feasible, but far from good solution is to use Flash everywhere... but a pencil and a sheet of paper will still work :)

Can you explain us why you need to protect content of your pages? Can't you use a different approach?

Ciao, Valerio