function showElement(str) {
        var obj = document.getElementById(str);
                obj.style.display = "block";
}

function hideElement(str) {
        var obj = document.getElementById(str);
                obj.style.display = "none";
}

function changeLang(slang) {
        var locArray = location.pathname.split("/");
        location.href="../"+slang+"/"+locArray[locArray.length-1]+"?lang="+slang;
        return true;

}