Coffeebeans; trying to get app/views/restaurants/show.js.coffee to work; the alert doesn't appear

help with show.js.coffee

# Controller
class RestaurantsController < ApplicationController
  def show
    @restaurant = Restaurant.find(params[:id])
    respond_to do |format|
      format.html # show.html.erb
      format.js # show.js.coffee
    end
  end
end

# restaurants/show.html.erb
<%= link_to "Breakfast", @restaurant, :remote => true, :id => "breakfast_filter" %>

# restaurants/show.js.coffee
alert("here we are");

Why is the show.js.coffee file never reached?