Work around a bug in jQuery outerHeight() and outerWidth() when called without argument

So apparently the bugs I was experiencing were a combination of my jQuery version and subsectionmanager's JavaScript. The bug is described here:
http://stackoverflow.com/questions/12093806/jquery-1-8-outer-height-width-not-working#answer-15607372

This pull request works around the problem by calling outerHeight and outerWidth with the default argument.

Many thanks to GitHub user houke, who found and fixed this.