zurb/foundation — pull request #1904 by ncuesta (2013-03-14 18:53:29+00:00)
Title: Fixed wrong check for reveal css-top property.

When the reveal modal checks if it has the `css-top` data attribute set, it would assume a `0` to mean that it is not set, while it actually means it is set and its value is `0`.

Just changed the check to fix this wrong assumption.

![Celebrate!](http://www.reactiongifs.com/wp-content/uploads/2013/02/anigif_enhanced-buzz-31994-1359473038-6.gif)