gistfile1.rb

  # Enter text in a tinymce editor widget. +iframe_id+ is the
  # HTML id of the +iframe+ element containing the editor.
  def fill_in_tinymce(iframe_id, text)
    within_frame(iframe_id) do
      editor = page.find_by_id('tinymce').native
      editor.send_keys(text)
    end
  end