Focusin and Focusout bubble in IE.   These events should behave the same way in other browsers.

I suggest something like the following:

1.       if(document.addEventListener){
2. document.addEventListener('focus', function(ev){
3. jQuery.event.trigger( 'focusin', null, ev.target )
4. },true);
5. document.addEventListener('blur', function(ev){
6. jQuery.event.trigger( 'focusout', null, ev.target )
7. },true);
9. }

I will submit patches for this and anything else I get a thumbs up for.