mozilla/talkilla — pull request #289 by dmose (2013-10-30 21:50:20+00:00)
Title: Fix grey block flashing on conversation window open

From the CallView commentary:

All the show/hide logic is done using the display CSS attribute on the child .media-display-area div. This allows $el's display to be used purely to express layout (i.e. "table-row", as of this writing). This is all motivated because it's a way to avoid a race between initial markup layout and JavaScript manipulation of the DOM.