function manageMenu(id)
{

  var menu_to_hide = document.getElementById(id);
  if (menu_to_hide.style.display == 'none')
    menu_to_hide.style.display = 'block';
  else
    menu_to_hide.style.display = 'none';
}

function saveRating(crit_id, rate)
{
  document.getElementById("item_criterion_"+crit_id).value = rate;
  document.getElementById("crit_rate_"+crit_id).innerHTML = rate+"/5";
  document.getElementById("stars_list_"+crit_id).style.width = rate*25+"px";
}