List of IE9 Standards Mode changes

I would like a (extensive) list of changes that have been made to the behavior of IE9 in standards mode.

As开发者_如何学JAVA an example, I recently debugged an issue in SWFObject and found that IE9 now returns typeof stylesheet.addRule == "function" instead of "object".

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IE9 guide for developers is a complete overview of new features and improvements.