var undef;
function show(name) {
  divs = document.getElementsByTagName('div');
  for (i = 0; i < divs.length; i++) {
    currentDiv = divs[i];
    if (currentDiv.id.indexOf('list-' + name) != -1) {
       toggle(currentDiv);
    }
  }
  return false;
}
function toggle(item, state) {
  if (state == undef) state = (item.style.display == '' ? 'none' : '');
  item.style.display = state;
}
function toggleall(state) {
  divs = document.getElementsByTagName('div');
  for (i = 0; i < divs.length; i++) {
    currentDiv = divs[i];
    if (currentDiv.id.indexOf('list-') != -1) {
      toggle(currentDiv, state);
    }
  }
  return false;
}