# File lib/action_view/helpers/javascript_helper.rb, line 112
      def button_to_function(name, *args, &block)
        html_options = args.extract_options!.symbolize_keys
        function = args[0] || ''

        function = update_page(&block) if block_given?
        tag(:input, html_options.merge({ 
          :type => "button", :value => name, 
          :onclick => (html_options[:onclick] ? "#{html_options[:onclick]}; " : "") + "#{function};" 
        }))
      end