[Greasemonkey] adding a "global" javascript function

[Lenny Domnitser]

On 10/12/05, Ilia K. <mail4ilia at gmail.com> wrote:
> window.helloworld = function() {
> ...
> So, I guess something has changed in the new Greasemonkey.

Yep. window is now an XPCNativeWrapper (it's a security thing) and
unsafeWindow is a new object that is the regular page window.

unsafeWindow.helloworld = function() {
  alert('Hello world!');
}

Make sure not to use unsafeWindow on scripts that execute on unlimited
sites, because a malicious page can take advantage of unsafeWindow
(hence "unsafe") to do all sorts of bad things.