//-----------------------------------------------------------------------------
// NavMenu script
//-----------------------------------------------------------------------------
function showHide(element_id) {
    var menu = $('#' + element_id);
    var arrow = $('img[id$="' + element_id + '_arrow' + '"]');
    var src = arrow.attr('src');
    if (menu.is(':visible') == true) {
        menu.fadeOut();
        src = src.replace("down", "right");
    }
    else {
        menu.fadeIn();
        src = src.replace("right", "down");
    }
    arrow.attr('src', src);
}