module UserHelper
  def openid_button(name, url)
    link_to_function(
      image_tag("#{name}.png", :alt => t("user.login.openid_providers.#{name}.alt")),
      nil,
      :title => t("user.login.openid_providers.#{name}.title")      
    ) do |page|
      page[:login_form][:user_openid_url][:value] = url
      page[:login_form].submit()
    end
  end
end