Alignement vertical

// debulked onresize handler
function on_resize(c,t){onresize=function(){clearTimeout(t);t=setTimeout(c,100)};return c};
    
    on_resize(function() {
		  $('.encadres_item span').each(function() {
				var $img = $(this);
				var h = $img.height();
				$img.css('margin-top', + h / -2 + "px"); 
			 });
		})();