Fixed Header

// =========================================
// = Fixed Header =
// =========================================

add_action('wp_enqueue_scripts', 'add_my_code');

function add_my_code() {
    add_action( 'print_footer_scripts', 'my_footer_script' );
}


function my_footer_script() { ?>

  <script type="text/javascript">

    jQuery(function($) {

        var $filter = $('#header');
        var $filterSpacer = $('<div />', {
            "class": "filter-drop-spacer",
            "height": $filter.outerHeight()
        });


        if ($filter.size())
        {
            $(window).scroll(function ()
            {
                if (!$filter.hasClass('fix') && $(window).scrollTop() > $filter.offset().top)
                {
                    $filter.before($filterSpacer);
                    $filter.addClass("fix");
                }
                else if ($filter.hasClass('fix')  && $(window).scrollTop() < $filterSpacer.offset().top)
                {
                    $filter.removeClass("fix");
                    $filterSpacer.remove();
                }
            });
        }

    });

  </script>

<?php }