PB floating class for control-bar

gistfile1.html

<script>
$(function () {
    var $controlBar = $('.control-bar'),
        isFloating,
        controlBarTimer;

    controlBarTimer = setInterval(function () {
        if (!$controlBar.attr('style') && isFloating) {
            $controlBar.removeClass('floating');
            isFloating = false;
        }
        if ($controlBar.attr('style') && !isFloating) {
            $controlBar.addClass('floating');
            isFloating = true;
        }
    }, 1);
});
</script>