Write Ajax code towards your REST web applications with a very simple Rails like API.
resource.js uses prototype.js and specially marked up html code. If you follow rails conventions for dom id's and and use Rail's restful controllers you should be all set to use resource.
A quick example:
Given a DIV with the id 'person_12'.
Call '$REC('person_12').destroy()' will send a http delete action to '/people/12' on your server.