Ok, so I found some time to play with this today and ran into a few issues. Most of them are going to be things I need to fix/figure out myself as I have many mods dumping data into the postbit... that should be fun.. ugh!
Anyway, I did run into one problem with the directions given here and it took me a bit to figure out.
The directions mention right clicking the tabcontent.js file and saving. You can't do that. Dynamic Drive prevents the hotlinking of their files and you get a file that doesn't work. Ultimately it saves as tabcontent.js.htm and just contains their "This is a no no" message in HTML.
So basically, you need to do what the second part of the directions say and go there and directly download it.