# File lib/action_view/helpers/date_helper.rb, line 500
      def select_month(date, options = {}, html_options = {})
        val = date ? (date.kind_of?(Fixnum) ? date : date.month) : ''
        if options[:use_hidden]
          hidden_html(options[:field_name] || 'month', val, options)
        else
          month_options = []
          month_names = options[:use_month_names] || (options[:use_short_month] ? Date::ABBR_MONTHNAMES : Date::MONTHNAMES)
          month_names.unshift(nil) if month_names.size < 13
          1.upto(12) do |month_number|
            month_name = if options[:use_month_numbers]
              month_number
            elsif options[:add_month_numbers]
              month_number.to_s + ' - ' + month_names[month_number]
            else
              month_names[month_number]
            end

            month_options << ((val == month_number) ?
              content_tag(:option, month_name, :value => month_number, :selected => "selected") :
              content_tag(:option, month_name, :value => month_number)
            )
            month_options << "\n"
          end
          select_html(options[:field_name] || 'month', month_options.join, options, html_options)
        end
      end