title: How to include JS libraries in SpiderMonkey
body: <p>I want to use Underscore.js and Backbone.js in a stand-alone SpiderMonkey scriptfile.  I can find only very simple examples of SpiderMonkey scripts.</p>
  
  <p>How do I include Underscore.js and Backbone.js (and other libraries like jQuery) in a stand-alone SpiderMonkey scriptfile? Can you point me to any other useful resources for writing SpiderMonkey js scripts?</p>