<%= link_to icon_tag('glyphicon-chevron-left') + ' Back'.html_safe, (@scenario ? scenario_path(@scenario) : agents_path), class: "btn btn-default" %>
        <% if (num_disabled = @disabled_agents.count).nonzero? -%>
          <% if params[:exclude_disabled] %>
            <%= link_to @scenario ? scenario_diagram_path(@scenario) : diagram_path, class: 'btn btn-default' do %><%= icon_tag('glyphicon-eye-open') %> Show <%= pluralize(num_disabled, 'disabled Agent') %><% end %>
          <% else %>
            <%= link_to @scenario ? scenario_diagram_path(@scenario, exclude_disabled: true) : diagram_path(exclude_disabled: true), class: 'btn btn-default' do %><%= icon_tag('glyphicon-eye-close') %> Hide <%= pluralize(num_disabled, 'disabled Agent') %><% end %>
          <% end %>
        <% end %>
      
      
        <%= render_agents_diagram(@agents) %>