$(document).ready(function() {    
        $('.logo-h, span.img').append('<span class="hover"></span>')
            .each(function (){var $span = $('> span.hover', this).css('opacity', 0);$(this).hover(function () {$span.stop().fadeTo(600, 1);}, function () {$span.stop().fadeTo(600, 0);})
        });
        });