function adv_lang_over(ob, c1, c2) {
  ob.style.backgroundColor = c1;
  ob.style.color = c2;
  if ((ul = ob.getElementsByTagName('ul')[0])) {
    ul.style.display='block';
  }
  document.getElementById('adv_'+ob.id).style.color='white';
}

function adv_lang_out(ob, c1, c2) {
  ob.style.backgroundColor = c1;
  ob.style.color = c2;
  if ((ul = ob.getElementsByTagName('ul')[0])) {
    ul.style.display='none';
  }
  document.getElementById('adv_'+ob.id).style.color='#878787';
}