def add_root_link(menu_model)
      block=capture do
        form_tag :action => action_name do
          concat hidden_field_tag :task, "add_root_link"
          concat content_tag :button, "Submit", {:type=>"submit", :class=>"button-submit"}
        end
      end
      if(params[:task]=="add_root_link")
        block+=capture do
          form_tag :action => action_name do
            concat "Title:"
            concat text_field_tag "title", "title"
            concat "Link:"
            concat text_field_tag "link", "link"
            concat hidden_field_tag :task, "add_root_link"
            concat content_tag :button, "Submit", {:type=>"submit", :class=>"button-submit"}
          end
        end
      end
      return block
    end