def add_step_link(form_builder)
    logger.info 'ADD_STEP_LINK'
    link_to_function 'add a step' do |page|
      form_builder.fields_for :steps, Step.new, :child_index => 'NEW_RECORD' do |f|
        logger.info 'inserted js'
        html = render(:partial => 'step', :locals => { :step_form => f, :i=>@i+=1})
        page << "$('steps').insert({ bottom: '#{escape_javascript(html)}'.replace(/NEW_RECORD/g, new Date().getTime()) });"
      end
    end
  end

<%= add_step_link(technique_form) %>