Vertical Align Middle

vertical-align-middle.js

$(window).resize(function() {
    $(".container > img").each(function() {
        var cHeight = $(this).parent(".container").height(),
            cWidth = $(this).parent(".container").width(),
            iHeight = $(this).height(),
            iWidth = $(this).width();
        $(this).css({
            top: 0.5*(cHeight - iHeight),
            left: 0.5*(cWidth - iWidth)
        });
    });
}).resize();

/*
.container {
  text-align: center;
  position: relative;
}

.container > img {
  position: absolute;
  z-index: 2;
}
*/