Event.observe(window, 'load', function(){
	EventSelectors.start({
	'.underopener:click': function(e){
			var ul = e.findElement('span').next();
			
			if (!ul.visible()){
				ul.up('li').select('ul').each(function(list){
					if (list != ul && list.visible())
						Effect.BlindUp(list, {duration: .5});
				});
				Effect.BlindDown(ul, {duration: .5});
			} else {
				Effect.BlindUp(ul, {duration: .5});
			}
		}
	});	
		
});