An Evergreen High School student who posted Internet photos of himself posing with guns was convicted Tuesday on a charge of possession of a handgun by a juvenile. The conviction came despite his parents' testimony that they gave him permission to handle guns in their home without their supervision. Colorado law prohibits possession of a handgun by a juvenile but permits parents to give them permission to possess guns in their homes - even without supervision. "This is a very difficult case," defense attorney Barrett Weisz said in his closing argument. "We have pictures that raise images of the Columbine...