function  toggle(obj) {
  var el = document.getElementById(obj);
  if ( el.style.display != 'none' ) {
    new Effect.SlideUp(el);
  }
  else {
    new Effect.SlideDown(el);
  }
}

function toggle_help(obj) {
  var el = document.getElementById(obj);
  if ( el.style.display != 'none' ) {
    el.style.display = 'none';
  }
  else {
    el.style.display = 'block';
  }
}