Simple FullCalendar doesn't render events in FireFox 3.6.13

http://sptutil.s3.amazonaws.com/js/fullcalendar/bugs/firefox-nodisplay.html

Two events, defined as arrays, with a title, start in ISO8601 date format, and an allDay: false directive. Renders events fine in Chrome, but FF3/4 render the calendar but not the events.

I'm not getting errors in FireBug, and I'm a bit embarrassed that this is going to be something ridiculously simple that I merely overlooked.