Answer by Walter Rumsby for this === window in firebug

So if this in firebug means the firebug object, how can I reference the normal this?

In your sample code this will be the window object because that is the Global Object when running in a browser. In Firebug the Global Object is Firebug itself (set a watch for both this and window in Firebug to confirm this).

From Douglas Crockford's A Survey of the JavaScript Programming Language:

There is a special variable, called this that is set to the object when a method of the object is called. ... In a simple function call, this is set to the Global Object (aka window)

Why are you trying to see if this is the window object anyway?