Sweet and Sour Carrots

26% calorie reduction from traditional recipe

2 cups carrot slices, 1/4 inch in length
1/2 cup celery slices, 1/2 inch in length
1 can (8 ounces) pineapple tidbits (drain and reserve juice)
1 tablespoon vinegar
2 teaspoons cornstarch
1 teaspoon light soy sauce
1/8 teaspoon salt
2 tablespoons stick butter or margarine
1/4 cup sliced green onions
1/4 cup Equal