# File lib/action_view/helpers/date_helper.rb, line 228
      def select_day(date, options = {})
        val = date ? (date.kind_of?(Fixnum) ? date : date.day) : ''
        if options[:use_hidden]
          hidden_html(options[:field_name] || 'day', val, options)
        else
          day_options = []
          1.upto(31) do |day|
            day_options << ((val == day) ?
              %(<option value="#{day}" selected="selected">#{day}</option>\n) :
              %(<option value="#{day}">#{day}</option>\n)
            )
          end
          select_html(options[:field_name] || 'day', day_options, options)
        end
      end