def link_to(*args, &block)
      link_to = Bh::LinkTo.new self, *args, &block

      link_to.append_class! :'alert-link' if Bh::Stack.find(Bh::AlertBox)
      link_to.append_class! :'navbar-brand' if Bh::Stack.find(Bh::Vertical)
      link_to.merge! role: :menuitem if Bh::Stack.find(Bh::Dropdown)
      link_to.merge! tabindex: -1 if Bh::Stack.find(Bh::Dropdown)
      html = super link_to.content, link_to.url, link_to.attributes, &nil

      if Bh::Stack.find(Bh::Dropdown)
        container = Bh::Base.new(self) { html }
        container.merge! role: :presentation
        container.render_tag :li
      elsif Bh::Stack.find(Bh::Nav)
        container = Bh::Base.new(self) { html }
        container.append_class! :active if link_to.current_page?
        container.render_tag :li
      else
        html
      end
    end
def link_to(*args, &block)
      link_to = Bh::LinkTo.new self, *args, &block

      link_to.append_class! :'alert-link' if Bh::Stack.find(Bh::AlertBox)
      link_to.append_class! :'navbar-brand' if Bh::Stack.find(Bh::Vertical)
      link_to.merge! role: :menuitem if Bh::Stack.find(Bh::Dropdown)
      link_to.merge! tabindex: -1 if Bh::Stack.find(Bh::Dropdown)
      html = super link_to.content, link_to.url, link_to.attributes, &nil

      if Bh::Stack.find(Bh::Dropdown)
        container = Bh::Base.new(self) { html }
        container.merge! role: :presentation
        container.render_tag :li
      elsif Bh::Stack.find(Bh::Nav)
        container = Bh::Base.new(self) { html }
        container.append_class! :active if link_to.current_page?
        container.render_tag :li
      else
        html
      end
    end
Overrides `link_to` to display a Bootstrap-styled link.
 Can only be used in Ruby frameworks that provide the `link_to` method.
 @see http://getbootstrap.com/components/#dropdowns
 @see http://getbootstrap.com/components/#nav
 @see http://getbootstrap.com/components/#navbar-brand-image
 @see http://getbootstrap.com/components/#navbar-links
 @see http://api.rubyonrails.org/classes/ActionView/Helpers/UrlHelper.html#method-i-link_to
 @see http://www.rubydoc.info/github/padrino/padrino-framework/Padrino/Helpers/AssetTagHelpers#link_to-instance_method
 @return [String] the HTML to display a Bootstrap-styled link.
 @overload link_to(caption, url, options = {})
   @param [#to_s] caption the caption to display in the link.
   @param [#to_s] url the URL to link to.
   @param [Hash] options the options for the original `link_to` method.
   @example Display a plain-text link inside an alert-box.
       alert_box do
         link_to 'Check the terms and conditions', '/#terms'
       end
 @overload button_to(url, options = {}, &block)
   @param [#to_s] url the URL to link to (see above).
   @param [Hash] options the options for the original `link_to` method.
   @yieldreturn [#to_s] the caption to display in the link.
   @example Display a link with HTML inside a dropdown.
       dropdown 'Menu' do
         link_to '/#terms' do
           content_tag :strong, 'Check the terms and conditions'
         end
       end