Clickable Image Map

I want a user to be able to select a color for later use in an image that's being generated. I have a 255-color spectrum, and right now the interface needs work. Currently, I have a row of 255 one-pixel wide images, with some javascript code that modifies a form selection when a color is clicked on. Obviously, this isn't a great solution, since it requires that 255 images load, introducing a fairly significant delay. Can I implement this with a single image?

yeah you can using an image map and some clever thought. There's some software out there by CoffeeCup Software that I always use to slice my image and generate the code, after that I just modify it for my needs. If you can post some code after you slice the image, im sure someone can help you do that...be it me or someone else.