You need XviD codec to view the videos on this page. You can download it here (for Windows), or visit the official XviD project page for more information and download options.
NOTE: The codec is provided here solely for the purpose of making life easier for my guests. This is not an official download site and is not in any way affiliated with XviD project. There is no warranty or support whatsoever.
Download XviD codec for Windows
Visit XviD Project Page