Growl for rails helper method. Growl flash[:notice] or flash[:error] in rails

application.rhtml

<% if flash[:notice] %>
  <%= growl_a_flash("Thanks", flash[:notice]) %>
<% end %>
<% if flash[:error] %>
  <%= growl_a_flash("Error", flash[:error]) %>
<% end %>

growl_a_flash - application_helper.rb

  def growl_a_flash(title,message)
    return "<script type='text/javascript' language='javascript'>
    Growl4Rails.showGrowl({ image_path:'/images/growl_icon.jpg', title:'" + title +"', message:'"  + message + "'});
    </script>"
  end

index_controller.rb

  def create
   #blah blah...
   flash[:notice] ="create successful"
  end