//In my window.addEvent functions I've added the expandCollapse() function - the key is to add one div with an id of expand, and one with and id of collapse into the accordion div


window.addEvent('domready', function() {
	var accordion = new Accordion($$('.toggler'),$$('.element'), {
		opacity: 0,
		onActive: function(toggler) { toggler.setStyle('background', 'transparent url("/~klingers/skin1/images/collapse.jpg") no-repeat 0% 15%'); },
		onBackground: function(toggler) { toggler.setStyle('background', 'transparent url("/~klingers/skin1/images/expand.jpg") no-repeat 0% 15%'); }
	});
});