How can I figure out where Javascript is changing my focus
<p>I am currently working on an ASP.Net project that has a large number of js files, most from third party sources. On a number of pages, the focus is being set to a control other than the one I'm setting it to in code-behind (Control.Focus()). How can I figure out how, why, and where the focus is being changed?</p>

<p>I have installed <a href="http://www.incaseofstairs.com/firefocus/" rel="nofollow">FireFocus</a> for FireBug so I can see the focus being changed, but I cannot see the cause.</p>
