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<script src="js/jquery-1.11.1.min.js"></script>
<script src="js/jquery-migrate-1.2.1.min.js"></script>

<script type="text/javascript">
    function center_container(){
        //console.log($(document).height());
        //console.log($(".container").height());

        var window_height = $(document).height();
        var container_height = $(".container").height();

        var container_margin = (parseFloat(window_height) - parseFloat(container_height))/2;
        $(".container").css("position", "relative");
        $(".container").css("top", (container_margin-80)+"px");
    }

    $(function () {
        center_container();

        $(window).resize(function() {
            center_container();
        });
    });
</script>