mouseover in assigned area

I have an image and I need to add some effects of mouseover but in another area. ity is like a keyboard and when you move the mose over the key it will show another image some where else and also it will show that key in different color. it can be done with js or flash. serious coders respond only with samples.. ## Deliverables Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. Complete copyrights to all work purchased.