title: IE8 forced to compatibility mode
body: <p>My team is developing a website with a pretty complicated UI; jQuery, ASP.Net AJAX, etc.  Of course I want my site to be compatible with all the modern browsers.  Sometimes, in testing or general usage of the site while it is being developed, IE8 tells me that the page doesn't work in standards mode and it is switching to compatibility mode but it never tells me why.  Is there some log or report or setting or something in IE8 that I can use to find out what upset IE8 Standards mode? Everything seems to work fine in FF, Chrome, Safari, and IE7 so what is it that IE8 doesn't like and how can I find that out?</p>