So im trying to learn about effective event delegation, and I need to
know when certain elements lose and gain focus.

PPK wrote a great article on this, (http://www.quirksmode.org/blog/
archives/2008/04/delegating_the.html) and I was wondering about his
solution:

How can I properly use Internet Explorerer's onfocusin/onfocusout
events and addEventListener so that this concept works smoothly cross-
browser, just like the existing Mootools addEvent system? Do I need to
do some major extending to the Mootools Event object?

Thanks
Jacob

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