Hey guys -- love the plugin. Unfortunately, something's not working quite right with a custom mod of Twenty Eleven (though it does work fine in Chrome, it's messed up in Firefox). The bug can be seen at: http://mygreekstudies.com/textbook/introduction/getting-started/
In Chrome, the plugin recognizes the right column and contains itself within the middle; in Firefox, the plugin continues into that column. It's possible that it's something with the column itself and not the plugin itself, but I'm not good enough at CSS to tell.
Is there a quick fix that you can see? Thanks so much!