window.addEvent("domready",function(){

	$$('.ref_post').each(function(el) {
		el.getElement(".ref_picture").addEvent('mouseenter', function(e) {
			el.getElement(".ref_desc").tween('top', '0');
		});

		el.getElement(".ref_picture").addEvent('mouseleave', function(e) {
			el.getElement(".ref_desc").tween('top', '150px');
		});

	});
})