emberjs/ember.js — pull request #5403 by bradleypriest (2014-08-17 07:27:52+00:00)
Title: [Bugfix beta] Use the jQuery polyfill for Node.prototype.contains

Currently Ember is broken in FF17 (I'm not sure if others) because both `Node.contains` and `Node. compareDocumentPosition` are missing.

This swaps out the polyfill for the jQuery version.

ping @rwjblue