respond_to do |format|
      if @post.show_blog_comments << @show_blog_comment
        @post.reload
        format.html { redirect_to show_blog_post_url(@show, @post) }
        format.js { render :action => '/new_comment.rjs' }
      else
        format.html { redirect_to show_blog_post_url(@show, @post) }
        format.js { render :action => '/new_comment.rjs' }
      end
    end