I'm trying to build something a little unique for my opening page, but I keep running into a problem. I'll do my best to explain.

On my home page I have:

Image1 Image2 Image3 Image4 Image5

ImageA

Now what I'm trying to make happen is when a user places the mouse over Image1 it will change Image1 & ImageA. Upon moving off Image1, both Image1 & ImageA return to normal.

I want to have this happen with each of the 5 images (change the image you're rolling over and ImageA)

But right now when I do it, when the mouse moves off the main image, ImageA returns to normal but Image1 doesn't change back. And to add to this, as I move my mouse over the other Images the same thing happens.
So in the end ImageA returns to normal, but Images1 through 5 are stuck to their rollover images and don't revert back to the original image.

Thoughts, suggestions?
Thanks!