Select item from chosen js select with Capybara and Selenium

gistfile1.rb

def select_from_chosen(item_text, options)
  field_id = find_field(options[:from])[:id]
  within "##{field_id}_chzn" do
    find('a.chzn-single').click
    input = find("div.chzn-search input").native
    input.send_keys(item_text)
    find('ul.chzn-results').click
    input.send_key(:arrow_down, :return)
    within 'a.chzn-single' do
      page.should have_content item_text
    end
  end
end

def select_from_multi_chosen(item_text, options)
  field_id = find_field(options[:from])[:id]
  within "##{field_id}_chzn" do
    input = find("ul.chzn-choices input").native
    input.click
    input.send_keys(item_text)
    input.send_key(:return)
    within 'ul.chzn-choices' do
      page.should have_content item_text
    end
  end
end

On my system (rspec 2.0.9, capybara 1.1.2) I have to click the element first to focus it then enter keys, to make it work.

  def select_from_multi_chosen(item_text, options)
    field_id = find_field(options[:from])[:id]
    within "##{field_id}_chzn" do
      input = find("ul.chzn-choices input").native
      input.click
      input.send_keys(item_text)
      input.send_key(:return)
      within 'ul.chzn-choices' do
        page.should have_content item_text
      end
    end
  end