function hint_show() {
  // включаем нужный
    document.getElementById('d_hint').style.visibility = 'visible';
    document.getElementById('d_hint').style.display = 'block';
	document.getElementById('d_hint_inner').style.visibility = 'visible';
    document.getElementById('d_hint_inner').style.display = 'block';
}

function hint_hide() {
    // выключаем ВСЕ блоки
    document.getElementById('d_hint').style.visibility = 'hidden';
    document.getElementById('d_hint').style.display = 'none';
    document.getElementById('d_hint_inner').style.visibility = 'hidden';
    document.getElementById('d_hint_inner').style.display = 'none';
}