Image HotSpots in a Smart Device Application

Hi,

I have a requirement whereby I need to provide an image of a country for users to interact with (in this case the country is Ireland). Whenever a user clicks/touches any county I need to be able to determine which county is clicked.

Initially I thought that I could create a number of regions on the image to represent each county and assign each image an ID. When a region is clicked I could use the region ID to determine the county. Then I realized that I have no idea how I might create regions on the image to accurately represent each county.

Can anyone suggest any way that I might be able to this?

Thanks,

dlarkin77