window.addEvent('domready', function() {
	var expanders = $$('.expander_link', '.expander_image');
	expanders.each(function(expander, i) {
		expander.addEvent('click', function(e) {
			new Event(e).stop();
			var expand = this.getParent('li').set('tween', { duration: 'short'});
			var expandHeight = this.getNext('div').getSize().y + 40;
			if (expander.getProperty('rel') == 'closed') {
				expand.tween('height', expandHeight);
				expander.setProperty('rel', 'open');
			}
			else {
				expand.tween('height', '19');
				expander.setProperty('rel', 'closed');
			}
		});
	});
});