How to disable right-click in Javascript?

Question

Possible Duplicate:
How do I disable right click on my web page?
Is right click a Javascript event?

How do I disable the right click? Or rather, disable the context menu.
And on that note, how do I detect right mouse up/down?

This is not to prevent people from taking content or whatever. I'm making a game and I'd like to be able to feature the right click too.

Answer 1

window.oncontextmenu = function() {return false;}

However, some browsers prevent disabling and changing the context menu, so it's not reliable.