I'm releasing a full-featured sliding door script intended for use by builders and scripters.
The script turns your door into a physical object when it opens and closes, so the motion is very smooth compared to standard prim animation. The door can move in any direction including up/down, so it's suited for garage doors and windows as well.
You can also make the door play sounds when it is triggered.
The door can be triggered via touch events, or by sensor events in which case you can also specify the range and frequency of sensor checks.
Specify a list of avatars who can use the door, or make the door usable by public/group/owner only.
The script has copy/trans perms on it so you can resell it, although I'd strongly prefer that you not give it away
For more info + a link to an in-world demo, go to http://www.slexchange.com/modules.php?name=Marketplace&file=item&ItemID=876768
Thanks for looking!
-Sax