MarkUsProject/Markus — pull request #1599 by arkon (2014-07-21 17:53:17+00:00)
Title: Fix for IE

Turns out older versions of IE (9 and lower) don't support the `classList` object in JavaScript, so I made some helper functions to do the adding/removing classes stuff.

(These `addClass` and `removeClass` functions are for DOM elements! They're not to be confused with jQuery's functions, which are only for jQuery objects!)