var gravity = 10.00;
  var collisionMask : LayerMask;
  
  private var velocity = Vector3.zero;
  private var position : Vector3;
  
  function Bounce (force : Vector3)
  {
          position = transform.position;
          velocity = force;
  }
  
  function Update ()
  {
          velocity.y -= gravity * Time.deltaTime;
          moveThisFrame = velocity * Time.deltaTime;
          distanceThisFrame = moveThisFrame.magnitude;
          
          if (Physics.Raycast(position, moveThisFrame, distanceThisFrame, collisionMask))
          {
                  enabled = false;        
          }
          else
          {
                  position += moveThisFrame;
                  transform.position = Vector3(position.x, position.y + 0.75, position.z);        
          }
  }