Blur the windows behind

[tom66]

Is there any way to blur the windows behind the active window for things like when you look through the glass frame with Emerald? E.g. not blur the entire window, but only the bit you can see by looking through the glass. It would just add that extra bit of realism to the already awesome set of effects.

PS: General blur on my laptop brings it to halt; I think it might be because I have an Intel integrated graphics card. Everything else tops 60-75 FPS on the benchmark tool. Any suggestions?

Thanks,
Tom