Forum icons change on topic rollover

[blueuniverse]

Basically, I have my no new post forum icon as a darker version of the new post icon, and I thought it would look really good if when you rollover the forum title link the forum icon could change to the new post icon (the lit up version, or perhaps another file of your choosing that would be a lit up version). I think this would look really good when going through the topics.

It should be reasonably easy with a bit of javascript, is anybody willing to give this a go?

What is up there sounded right in my head, if it doesn't to you, I will try and explain again.

Thanks