In a small bowl, beat cream cheese until smooth. Stir in onions, crab and garlic. , Place about 1-1/2 teaspoons in the center of a wonton wrapper. (Keep remaining wrappers covered with a damp paper towel until ready to use.) Moisten edges with water; fold opposite corners over filling and press to seal. Repeat., In an electric skillet, heat 1 in. of oil to 375°. Fry wontons, in batches, until golden brown, about 1 minute on each side. Drain on paper towels. Serve with sweet-and-sour sauce.