I'm developing a CSS testing environment and I'd do not want to use any libraries as they could change the CSS information or the way it is handled.

I'm looking to recreate getComputedStyle's function in MSIE. So far I've got runtimeStyle, but I'm lost as to how to reach a Pseudo-Element in order to obtain the styles like getComputedStyle can.

There are times when I want to strangle MSIE, and this is one of them.