GLSL Fade In/Out


I had a game running on Blender Multitexture Materials, and in this I had several alpha planes used to fade the scene in and out. This worked by having a black UV texture on a shadeless plane, activating the alpha button in UV buttons, and animating the alpha value with TexFace and Alpha enabled in the Material Panel.
However when I switched over to Blender GLSL Materials, these planes turned shadeless white and did not fade or anything. How can I either repair them or replace them with another fading method?

One of these should help

Best of luck.