My firefox has just decided to have difficulty opening any folders on www.tvtropes.org pages. For example: this one: http://tvtropes.org/pmwiki/pmwiki.php/Main/DeadlyEuphemism
It won't expand any of those "folders" on the page, or any of the things on the left column that should be un-collapsable (with the "plus" shaped things)
They all worked just fine until an hour ago, and I can't figure out what is different.
The information's all in the source for the page, but I don't know why I can't expand anything./
<li class='plus'> <a class='twikilink' href='http://tvtropes.org/pmwiki/pmwiki.php/Main/AppliedPhlebotinum' title='http://tvtropes.org/pmwiki/pmwiki.php/Main/AppliedPhlebotinum'>Applied Phlebotinum</a>
For example, that there won't expand. I'm not familiar with the "class" function...