gistfile1.txt

# /shared/_menu.html.erb
<% cache(:action_suffix => "site_menu") do %>
  <ul id='<%= dom_id ||= "menu" %>' class='menu clearfix'>
    <%= render :partial => "/shared/menu_branch", :collection => @menu_pages, :locals => {
      :hide_children => RefinerySetting.find_or_set(:menu_hide_children, false)
    } -%>
  </ul>
<% end %>

# /shared/_menu_branch.html.erb
<%
  css = []
  css << "selected" if selected_page?(menu_branch) or descendant_page_selected?(menu_branch)
  css << "first" if menu_branch_counter == 0
  css << "last" if menu_branch_counter == menu_branch.shown_siblings.size
  domid = "item_#{menu_branch_counter}" unless menu_branch.parent_id.present? or menu_branch.title.blank?

   if menu_branch.in_menu?
-%>
<li<%= " class='#{css.join(' ')}'" unless css.blank? -%><%= " id='#{domid}'" unless domid.blank? -%>>
  <%= link_to menu_branch.title, menu_branch.url %>
  <% unless hide_children or menu_branch.parent_id.present? or (children = menu_branch.children.collect{|c| c if c.in_menu? }.compact).empty? %>
    <ul class='clearfix'>
      <%= render :partial => "/shared/menu_branch",
                  :collection => children,
                  :locals => {:hide_children => hide_children} -%>
    </ul>
  <% end %>
</li>
<% end -%>