blonduck
Here it is, I hope it help you, also, I did two system, so, you can select one or other, and toggle disable on the old system.
Also, if you want something better and improved, I need more information to meet the requirements =]
dl.dropbox.com/u/47035927/Samples/tbg%20test%201.capx
EDITED: Avoid one thing!!! I edited the collision polygons of your "area" to meet the circle, because it was a square, and the mouse will check only the polygon area inside the image editor and not the sprite pixeled area.