function let_appear(content_id, sorting) {
	$$('.img_' + content_id).each(function(el) {
		el.addClassName('hidden');
	});
	
	$$('.img_' + content_id + '.sort_' + sorting).each(function(el) {
		el.removeClassName('hidden');
		el.setStyle({display: 'none'})
		new Effect.Appear(el, {duration: 0.5});
	});
	
	$$('.link_' + content_id).each(function(el) {
		el.removeClassName('active');
	});
	
	$$('.link_' + content_id + '.link_no_' + sorting).each(function(el) {
		el.addClassName('active');
	});
}