Combine sugar, spices, water and corn syrup in small saucepan. Bring to boil, stirring constantly. Remove from heat and pour over butter in large mixing bowl. Stir until butter melts; cool to lukewarm. Combine flour, baking soda and salt. Add in butter mixture; mix well. Cover and refrigerate dough overnight.
Preheat oven to 375°F.
Roll dough on lightly floured surface to 1/8-inch thickness. Cut with floured gingerbread people cutters. Bake on unbuttered cookie sheet 12 to 15 minutes or until golden.
Cool completely on wire racks; decorate as desired with icing.