function set_lang_cookie(cookie_name, lang_code) {
    document.cookie = cookie_name+'='+lang_code+'; path=/'

    window.location.reload(true)
}

function logout(cookie_name, redirect_url) {
    var date = new Date();
    date.setTime(date.getTime()-(24*60*60*1000));

    document.cookie = cookie_name+'=; expires='+date.toGMTString()+'; path=/'

    if (redirect_url) {
        window.location = redirect_url
    }
}