Citrus Cooler

1 1/2 cups sugar
2 cups water
2 cups lemon juice
2 cups orange juice
2 cups pineapple juice
2 liters ginger ale

Dissolve sugar in water.   Stir in lemon juice, orange juice and pineapple juice.   Freeze for 3 hours, stirring every hour to keep slushy.   Remove from freezer, add ginger ale and serve over crushed ice.   Garnish with fresh fruits and mint.