Hi Ted,
I've tagged it now but I recommend use the latest code which has a number of improvements since the 2.3.7.6 release and don't fork anything. Of course if you do use the latest version you can't just replace a single dll, you need to get all the changes so you should use all the files.
You could easily make a different version of the javascript with a different file name and different internal method/class names and integrate it without forking any server side code. you could write a little UserControl and embed it into layout.master and use that to wire up your custom script.
Hope that helps,
Joe