I've seen a site where you click right it once you get a warning, then if that happens again, another alert pops-up this time it's never ending, by that I mean visitor have to click o.k then the same message pops up, click o.k and it will never end unless you press ctrl+alt+del to exit window.
is there a code for that?

search the forum...it's been posted before.

also, I would recommend not using that script unless you really want to annoy people. there ARE useful things on the right click menu, such as Print, Back, Open Link in new window, etc. if someone has to close their browser because of that script (even if they accidentally right click), you will probably lose a visitor. especially if that visitor uses AOL, for instance, because then he/she would have to close the AOL software and sign on again.