How to color asp hotspots on an imagemap?
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I have an image (the image is a floor plan for a building), and the image contains various rooms that can either be open or reserved. I have used an Imagemap and hotspots to map out the coordinates of the rooms and I am handling the onclick events to do what I need them to accomplish. The problem is, how can I color the coordinates of the hotspot once the room is reserved? I keep track of reserved rooms in my database, so it isn't a problem knowing which room is reserved, but the problem is there is no color property for hotspots. What's the best way to go about this? Javascript?

I know I can swap images on click and whatnot, but there are hundreds of rooms, and it would be a waste of time to have that many images for every possibility of reserved/not reserved rooms.