Test the Focus Manager's ability to make a set of non-natively focusable 
elements focusable.  Using the Focus Manager Node Plugin the user should be 
able to move focus among each <li> and be able to click 
each <li> by pressing the enter key while focused on it.
(Note: This test won't work in Safari 3 as it doesn't support the 
tabIndex attribute on all elements.)
Test the Focus Manager's ability to ensure that <a> 
elements without an href attribute still fire a click event 
while the user presses the enter key while focused on them.
Test the Focus Manager's ability to manager a set of natively focusable descendants.