Hello. I have a problem. I've made a accordion menu in sidebar using wp_nav_menu. Everything works great as long as the content has a lot of info. But when there is no text or is a little, after clicking "Szkoła" (second from top) the menu is going in to the footer. I would like the footer to go down when the menu is opening. Can you help me? the jquery script for menu:

$(document).ready( function($) {

    // This hides all the sub menus on page load
    $('#mb-nav ul.sub-menu').hide();
    // This makes sure that all the sub menus are open when applicable
    $('#mb-nav li.current-menu-item').children().show();
    // This keeps the nav open to the item that you are navigating to.
    $('#mb-nav li.current-menu-item').parents().show();

    $('#mb-nav ul li a').click(
    function() {
    var checkElement = $(this).next();
    if((checkElement.is('ul')) && (checkElement.is(':visible'))) {
    return false;
    }
    if((checkElement.is('ul')) && (!checkElement.is(':visible'))) {
    $(this).parent().siblings("li:has(ul)").find("ul").slideUp('normal');
    $('#mb-nav ul ul li ul:visible').slideUp('normal');
    checkElement.slideDown('normal');
    return false;
    }
    }
    );
    $('#mb-nav ul ul li a').click(
    function() {
    var checkElement = $(this).next();
    if((checkElement.is('ul')) && (checkElement.is(':visible'))) {
    return false;
    }
    if((checkElement.is('ul')) && (!checkElement.is(':visible'))) {
    $('#mb-nav ul ul').slideUp('normal');
    $('#mb-nav ul ul li ul:visible').slideUp('normal');
    checkElement.slideDown('normal');
    return false;
    }
    }
    );  

    });