function showAndHide(id)
{
	myMenus = $$('.epe');
	
	current = $(id);
	myMenus.each(function(el){
		if(el.style.display != 'none')
		{
			visible = el.getAttribute('id');
		}
	});
	
	$('right').effect('opacity', {
		duration: 500,
		fps: 75,
		onComplete: function() {
			$(visible).setStyle('display','none');
			$(id).setStyle('display','block');
			$('right').effect('opacity', {
				duration: 1000,
				fps: 75
			}).start(1);
		}
	}).start(0);
}