After a search for a suitable chess game viewer which was the initial goal of this website I started to create a new Chess Game Viewer. These efforts have resulted in both a Chess diagram viewer as well as a Chess game viewer.
The code for these viewers is still under development, but both can already be used. A link back to this site is appreciated.
If you want to use these viewers first have a look at how to configure the FEN viewer. If everything works fine then configure the Chess game viewer.
Please note that it isn't necessary to use the coded moves anymore, because the viewer is able to generate them, but you can still use them to improve performance (and for complex games).
The game viewer can be used for chess games, but also for chess puzzles, like a mate in two problem and it is possible to use NAG symbols.
It's also rather easy to configure the viewers. You can use your own chess board images or your own piece set.
Please have a look at some of the previous posts to get a better idea about the possibilities of these viewers and let me know if you have more unfulfilled wishes.