Dissolve lime jello in 2 cups of hot water. Pour into 14x10x2 pan. A clear dish enables you to see the colors. Chill until partially set.
Dissolve lemon jello in 1 cup hot water in top of a double boiler. Add marshmallows, stir to melt. Remove from heat. Add pineapple juice & cream cheese. Beat until blended & stir in pineapple. Cool. Fold in whipped cream & mayonnaise. Chill until thickened. Pour over lime jello. Chill until almost set.
Dissolve cherry jello in last 2 cups of hot water. Add 2 cups of cold water & chill until partially set. Pour over pineapple layer. Chill until firm.