toggle.js

document.observe('dom:loaded', function() {
	$$('a[rel^=toggle]').each(toggleLinkBehavior)
});
function parseRel(key, rel){
  var keypos = rel.indexOf(key)+key.length+1; //find occurance of key
  var keys = rel.slice(keypos).split(']')[0].strip(); //split at end of key segment and trip whitespace
  return keys.split(','); //return keys as an array
}
function toggleLinkBehavior(el){
  el.toggle_ids = parseRel('toggle', el.readAttribute('rel'));
  el.toggle_ids.each(wrapElement)
  el.observe('click', function(event){
    if(el.match('a')) event.stop();
    el.toggle_ids.each(function(id){
      effectToggle($('toggle_wrapper_' + id))
    });
  });
}

function wrapElement(element){
  var element = $(element)
  var parent = $(element.parentNode);
  if (parent.hasClassName('toggle_wrapper_'+element.id)) {
    return parent;
  } else {
    return element.wrap(new Element('div', {'id': 'toggle_wrapper_'+element.id, 'style': 'display: none;'}));
  }
}

function effectToggle(el){
  if(!el.visible()){
    Effect.BlindDown(el.id, { duration: 0.3, transition: Effect.Transitions.SwingTo });
  }else{
    Effect.BlindUp(el.id, { duration: 0.3, transition: Effect.Transitions.SwingTo });
  }
}