document.observe("dom:loaded", function() {
	$$('.collapsable > div').invoke('hide');
	$$('.collapsable h4').each(function(it){
		it.observe('click', function(ev){
			if(it.next().getStyle('display') == 'none') {
				new Effect.SlideDown(it.next(), { 'transition': Effect.Transitions.linear, 'duration':0.3});				
			} else {
				new Effect.SlideUp(it.next());				
			}

		});
	});
});