Accordion Collapsible Default

Hello all,
I've been playing with jQuery UI 1.7.2 for a few weeks and had a
question related to its accordion widget.
Currently with jQuery UI 1.7.2, one of the default behaviors for the
accordion is to always keep one section open. I would like all
sections to be closed initially by default and was wondering if anyone
out there had successfully implemented that.
Thanks in advance!