How to inverse UV mapping images?

Hey, I just figured out a way of making realtime mirrors in game - all i’m doing is render to texture on a plane with a camera in front of it - this simulates a mirror. My only downfall is all the images are of course inverted. How can I uninvert them?

Here is a realtime mirror tutorial.
http://www.tutorialsforblender3d.com/Game_Engine/VideoTexture/VideoTexture_Mirror_1.html

Thanks HG1 !