.live listner to check if user pressed tab to focus on current input field
<p>I have a few input fields one on top of each other, I want to be able to check if a user used the tab key or clicked to focus on the current input field. 
Checking on the <code>.live('click', function() {</code> is easy but i don't know how to check if they used tab to focus on the current input field.</p>
