Capturing mouse event data outside an iframe

I am working on a Facebook app and have run into a situation where being able to capture whether or not the mouse has left the app's iframe would be really great info to have. I've tried playing with window.blur() and window.focus() in jquery but (for reasons regarding how my content renders at the moment) this only works in Firefox. I have considered using mousemove() to captu开发者_如何学Gore the x and y position of the mouse but it would appear that once the mouse leaves the iframe I'm out of luck.

tl;dr I have an iframe that I have control of and a page it's embedded into that I don't. I need to capture the mouse movement/click/whatever outside my iframe and want to know if that's actually possible. Thanks!

I went with a combination of Martin and qwertymk's solution to the issue. I'd check you guys off as answering the question but since you can't approve of comments this will have to do. Thanks all.