links are not working :(

Hi! http://www.opengl.org/developers/code/features/OGLextensions/OGLextensions.html

Damnit, there are explained some cool extensions but when I click link EXT_fog_coord I get page not found!

Here you’re men :
http://oss.sgi.com/projects/ogl-sample/registry/EXT/fog_coord.txt

*Thanks