title: AJAX with Rails 3.0
body: <p>I read in <a href="http://guides.rubyonrails.org/ajax_on_rails.html" rel="nofollow">this guide</a> about AJAX with Rails that "Rails 3.1 ships with jQuery as the default JavaScript library". If I'm using Rails 3.0, how would the use of AJAX differ from what's specified in this guide? (It's hard for me to upgrade Rails version right now.)</p>