For better user experience, I have switched on the keyboard support for the Eidogo player. So you should be able to use arrows keys to navigate games now.
LEFT KEY: go backward one move
RIGHT KEY: go forward one move
UP KEY: go to the beginning of the game
DOWN KEY: go to the end of the game
Remember you need to click on the edge of the Go board so that it gets focus before you can use the keys.
You might initially run into problem if you visited the Online Game Viewer page before and your browser cached a local copy of the script. If things do not work (board not loaded properly, games not shown, etc.), it is probably not a bug. Please reload/refresh your page. Depending on the web browser you are using, try click the reload/refresh button. You may need to hold the Ctrl or Alt or Shift key while pressing the button (you can safely try all three). For Internet Explorer, press F5 on your keyboard to refresh. This should make sure your browser pick up the latest script and everything should work afterwards.
I've tested this on Firefox, Google Chrome, Internet Explorer and Opera. Let me know if there is any problem.