# File lib/merb-helpers/form/builder.rb, line 74
    def bound_radio_group(method, arr)
      val = control_value(method)
      arr.map do |attrs|
        attrs = {:value => attrs} unless attrs.is_a?(Hash)
        attrs[:checked] = true if (val == attrs[:value])
        radio_group_item(method, attrs)
      end.join
    end