def addresses_for_lookup
    people = Person.find(:all, :include => :email_addresses, :scope => :read)
    groups = PersonGroup.find(:all, :scope => :read)
    @addresses = people.map(&:email_addresses).flatten.map(&:email_address).uniq.sort
    @addresses << groups.flatten.map(&:name).uniq.sort
    @addresses.flatten!
    headers['content-type'] = 'text/javascript'
    render :layout => false
  end