function swap(item, stan) {
    imgid = document.getElementById('menu'+item);
    imgid.src = "_img_menu/menu_pl_" + stan + "_" + item + ".gif";
}

function swapen(item, stan) {
    imgid = document.getElementById('menu'+item);
    imgid.src = "_img_menu/menu_en_" + stan + "_" + item + ".gif";
}