function activateEdit(id) {
  var el = document.getElementById(id);
  if (el.className == "l_edit_norm") {
    el.className = "l_edit_over";
  }
}

function deactivateEdit(id) {
  var el = document.getElementById(id);
  if (el.className == "l_edit_over") {
    el.className = "l_edit_norm";
  }
}