Removed superfluous 'tracks' directory at the root of the repository.

Testing commits to github.

vendor/plugins/unobtrusive_javascript/lib/controllers/unobtrusive_javascript_controller.rb

@@ -0,0 +1,52 @@
+require 'digest/md5'
+
+class UnobtrusiveJavascriptController < ActionController::Base
+  skip_before_filter :initialise_js_behaviours
+  skip_after_filter  :store_js_behaviours
+  
+  after_filter :perform_any_caching 
+  after_filter :reset_js_behaviours
+  
+  # Renders the external javascript behaviours file
+  # with the appropriate content-type.
+  def generate
+    headers['Content-Type'] = 'text/javascript'
+    
+    if js_behaviours
+      generate_etag
+      modified? ? render_script : render_304
+    else
+      render :text => "", :layout => false
+    end
+  end 
+  
+  protected
+  
+  def perform_any_caching
+    if behaviour_caching_enabled?
+      self.class.cache_page js_behaviours.to_s, request.path
+    end
+  end
+  
+  private
+  
+  def generate_etag
+    headers['ETag'] = Digest::MD5.hexdigest(js_behaviours.to_s)
+  end
+  
+  def modified?
+    request.env['HTTP_IF_NONE_MATCH'] != headers['ETag']
+  end
+  
+  def render_script
+    render :text => js_behaviours.to_s, :layout => false
+  end
+  
+  def render_304
+    render :nothing => true, :status => 304
+  end
+  
+  def behaviour_caching_enabled?
+    js_behaviours && js_behaviours.cache?
+  end
+end