How to wait until one listener will finish its work?

How to wait until one listener will finish its work?

Hi guys,
http://jsfiddle.net/V34ud/1/
It should change images, how It really does, but If I fastly hover between "A" elements It works strangely. I know the last showed image doesn't want to disapper.

I think the problem is with listeners. One doesn't finish it's work when another one starts work. Am I right?