.sortable
  = render :partial => "#{opts[:path]}/new", :locals => { :opts => opts }
  - unless tree.empty?
    :javascript
      $(function() {
        sortable             = new document.TheSortableTree;
        sortable.max_levels  = #{opts[:max_levels]};
        sortable.rebuild_url = "#{url_for(:controller => opts[:klass].pluralize, :action => :rebuild)}";
        sortable.init()
      })

    %ol.ui-sortable.sortable.nested_set{ :id => "#{opts[:klass]}_nested_set" }= raw tree