[eiriklv]

As nhpatt notes you're not actually calling obj.method here, you're passing it as an argument, which will be called at a later time.

Looking at a possible implementation of setTimeout makes it clearer:

  function setTimeout(func, delay) {
    // wait for the delay to complete..
    func();
  }

Here you can see that when the function is called there's nothing to the left of it.

[Cakez0r]

Yup, I get it. I was just pointing out that there are some edge cases to the "context is whatever is left of the function" rule-of-thumb.