Change accordion behavior

Change accordion behavior


The accordion documentation page says the following:
NOTE: If you want multiple sections open at once, don't use an
accordion
An accordion doesn't allow more than one content panel to be open at
the same time, and it takes a lot of effort to do that. If you are
looking for a widget that allows more than one content panel to be
open, don't use this. Usually it can be written with a few lines of
jQuery instead, something like this:
jQuery(document).ready(function(){
    $('.accordion .head').click(function() {
        $(this).next().toggle();
    }).next().hide();
});
I've tried to do this but cannot make it work. Can someone please show
me some simple html and the jquery that will allow the accordion to
open multiple sections at once? I'm particularly interested in
preserving the themes here.
TIA
Soup