Trying to set up rendering of partials within tabs using AJAX

_trending.html.erb

############## views/products/_trending.html.erb ###############

<% @products.each do |product| %>
  <div class="product">
    <%= link_to (image_tag product.thumbnail), product %>
    <div class="product-overlay-details">
      <%= product.name %>...
    </div>
  </div>
<% end %>

gistfile1.txt

If I click on a tab it appears to render the partial, but nothing shows up:

Started GET "/trending" for 127.0.0.1 at 2012-08-07 12:19:39 -0500
Processing by ProductsController#trending as JS
  Product Load (0.2ms)  SELECT "products".* FROM "products" 
  Rendered products/_trending.html.erb (1.9ms)
  Rendered products/trending.js.erb (2.5ms)
Completed 200 OK in 5ms (Views: 3.7ms | ActiveRecord: 0.2ms)
[2012-08-07 12:19:39] WARN  Could not determine content-length of response body. Set content-length of the response or set Response#chunked = true

index.html.erb

############## views/products/index.html.erb ###############
<div class="tabbable">
  <ul class="nav nav-tabs" id="product-tabs">
    <li class="active">
      <%= link_to "Trending", trending_path, :remote => true %>
    </li>
    
    <li>  
      <%= link_to "Just Posted", recent_path, :remote => true %>
    </li>
    
    <li>
      <%= link_to "Most Popular", popular_path, :remote => true %>
    </li>
  </ul>
  <div class="tab-content">
    <div class="tab-pane active" id="trending">

    </div>
    <div class="tab-pane" id="recent">

    </div>
    <div class="tab-pane" id="popular">

    </div>
  </div>
</div>

products_controller.rb

class ProductsController < ApplicationController
  # GET /products
  # GET /products.json
  def index
    @products = Product.all

    respond_to do |format|
      format.html # index.html.erb
      format.json { render json: @products }
      format.js { render :layout => false }
    end
  end
  
  def trending
    @products = Product.all
    respond_to do |format|
      format.js
    end
  end

  def recent
    @products = Product.all
    respond_to do |format|
      format.js
    end
  end

  def popular
    @products = Product.all
    respond_to do |format|
      format.js
    end
  end
end

routes.rb

################# routes.rb ##################
Behova::Application.routes.draw do
  root :to => 'products#index'
  resources :products
  get 'trending' => 'products#trending', :as => 'trending'
  get 'recent' => 'products#recent', :as => 'recent'
  get 'popular' => 'products#popular', :as => 'popular'
end

trending.js.erb

############## views/products/trending.js.erb ###############
$('#trending').html("<%= escape_javascript(render('trending')) %>");