function otworzMenu(id)
{
    try
    {
        var TagUL = document.getElementById(id);
        if (!TagUL.style.display || TagUL.style.display == 'none') {
            TagUL.style.display = 'block';
        } else {
            TagUL.style.display = 'none';
        }
    } catch (e) {}
}