JS not recognized in link_to_remote respond_to?

In my view I have this test...

<%= link_to_remote('AJAX Alert', :url => '/sandbox/submit', :success => 'alert(request.responseText)') %>

In my controller, this works and alerts "AJAX Response"...

  def submit     render :layout => false   end

But if I add the respond_to block, the format.js never gets recognized...

  def submit     respond_to do |format|       format.js {         render :layout => false       }       format.html {         # render normal layout       }     end   end