Problems with focus input and detect key.

I have an input line, for a chat. It works from this idea:

The scrollbar is has:

 GUI.SetNextControlName("Defocus");

The input line has:

 GUI.SetNextControlName("Defocus");

In function onGUI()

     if (Input.GetKeyDown (KeyCode.Return))
     {
         GUI.FocusControl("Focus");
     }

If you hit enter, it will focus the input and, later in the input thing, theres a way to throw off the focus after typing in a string. But, I wanted something like the above in the onGUI() that says if input is keycode escape, then defocus. But this doesn't work. It seems it won't register ANY key press in ongui while i am active in an input field?