code: @Override
      public void renderHead(final Component _component,
                             final IHeaderResponse _response)
      {
          try {
              _response.render(JavaScriptHeaderItem.forScript(SetMessageStatusBehavior.getScript(),
                              SetMessageStatusBehavior.class.getName()));
          } catch (final EFapsException e) {
              // TODO Auto-generated catch block
              e.printStackTrace();
          }
      }
docs: Render to the web response whatever the component wants to contribute to
  the head section.
  
  @param _component    Component this behavior belongs to
  @param _response     Response object