264553 Select Campground From Map

This project is a clone of [login to view URL];contractCode=CA&parkId=120006 I want to display a campground map, then have people select the spot they want from a list of radio boxes. As each radio box is selected, the corresponding campground area on the map will light up or change colors. I also need a means on the site's backend to gray out or change colors on the areas that have been previously selected so they cannot be selected again. All data will be stored in Microsoft SQL server