console.dir(window) in Firefox?

console.dir(window) in Chrome:

http://ecmazing.com/unsorted/console-dir-window-in-chrome.png

console.dir(window) in Firebug (in Firefox 7):

http://ecmazing.com/unsorted/console-dir-window-in-firebug.png

Why does Firebug list only a couple of properties of the window object? How can I list all global properties in Firefox?

Also, where is the __proto__ property so that I can follow the prototype chain?