I am creating a CSS-based image map of the United States using image sprites and I can't seem to target one area due to it's odd position. If you mouse-over "Nevada", you'll notice you can't highlight it unless you hover over around Arizona. I've left the boarders visible to help you see how I have it set up. If you have any other methods other than what I'm using, I am open to ideas, but no Flash please.
You can view it here: http://hgfdirect.com/lp/test-map/
Any help is appreciated.