I have a movieclip of an air balloon and two buttons, one to make the balloon take off and the other to bring it down. I have found some fancy code that gently lifts the balloon off the ground on press with a decaying orbit that gently drops it down if you don’t keep pressing the button but I don’t know how to stop the balloon from disappearing off the top or bottom of the stage. How do I get it to land where I want it to? Can anyone help or advice me where to look? Many thanks 
I have attached the .fla if that helps…PS. if you also know how to make the shadow of the balloon reduce as it gets higher and then enlarge as it gets lower that would be fab!
