Image Erorr

All but one image has been able to use the scroll over behavior, and after a long time playing around with the program tring to find out why this ONE image won't link up and swap with the middle image, it turns out it was the name that i'd saved it as that was the problem...just a simple (') apparently it messes with the code...so the moral is DON'T USE SPACES OR PUNCTUATION WHEN SAVING!!.