Using JQuery + Prototype in Rails
Original info was found here. It was posted about 3 years ago, so JQuery has changed a little since then with the implementation of JQuery.noconflict().
In a nutshell, just in clude JQuery first and then include the other libraries(s) that may use the $( function. Make sure you call JQuery stuff with JQuery(xxx) instead of $( from now on. You include JQuery in rails usually in your main layout file by typing:
<%= javascript_include_tag ‘jquery’ %>
Make sure the jquery download files are in your /public/javascript directory of your project.
The JQuery site suggested adding the noconflict at the end of the jquery.js file, but instead I did it this way in the layout file.
<script>jQuery.noConflict(); </script>