Barbecued Hot Dogs

3/4 C. chopped onion
3 T. butter
1-1/2 C. chopped celery
1-1/2 C. ketchup
3/4 C. water
1/3 C. lemon juice
3 T. brown sugar
3 T. vinegar
1 T. Worcestershire sauce
1 T. yellow mustard
2 packages Hot Dogs
16 hot dog buns, split

In a saucepan over medium heat, saute onion in butter until tender. Add celery, ketchup, water, lemon juice, sugar, vinegar, Worcestershire sauce and mustard; bring to a boil. Reduce heat; cover and simmer for 30 minutes. Cut three 1/4 inch deep slits on each side of hot dogs; place in a 2-1/2 quart baking dish. Pour the sauce over the hot dogs. Cover and bake at 350�F. for 40-45 minutes or until heated through.