climbing stairs script

I've build a ship and I want people to move (jump) between decks - I've tried using short range TP (ie. within a single region) but find two disadvantages:

1. as destination is within the ship, more times than not, the avatar ends up standing on the roof of the topmost level.

2. While the ship's location in static (doesn't move), I want to box it up and distribute it as a freebee - local region TP destinations have to be reset set each time the ship is rezzed in a different location.

Is there a script that allows me to move within linked objects - or can someone point me in the right direction to start possibly writing something of my own?

A bit like when you go into a house and you click the arrow at the bottom of the stairs and jump to the top without having to walk upo the stairs.

Thanks

One simple tactic is to write a script that lets an av sit on an object, then sets its position to llGetPos()+z, unsits the av, and returns to the stored llGetPos(). That way, movement is all relative to the unit's initial starting point, so you don't have to reset the TP unit every time you move it.

Good thinking Argonaut