Not to move off-topic here, but the original request was for managing a specific page of clicks and entries which are used to modify other items on the page. There is no need or call here for repeated calls to the server to fill out content.

AJAX, in standard terminology is the behavior of altering content though hidden back-end communications between the client and the server.

This user is requesting help on managing a single page with a simple rule-set. The solution might be extended to an AJAX type solution, but a properly loaded page will have all the rules provided in a single page hit to satisfy this design. The complexity of AJAX is not warranted here. Merely using simple Dynamic HTML with Javascript will satisfy the form rules as outlined simply and without the overhead of additional client/server communications.

Since you provided a reference resource... I'll include my own:

• _JavaScript - The Definitive Guide_ 5th ed, O'Reilly, isbn-10: 0-596-10199-2
• _JavaScript & DHTML Cookbook_, O'Reilly, isbn-10: 0-596-00467-2

And, rather than looking at books, there are lots of ECMAScript (aka. JavaScript) toolkits out there to make it easier to write dynamic pages. (I assume the more recent 5th ed. JavaScript book would mention them, but the DHTML cookbook is 4yrs old):

• Dojo
• Google Web Toolkit
• script.aculo.us
• Yahoo! User Interface Library
• MochiKit
• Prototype
• Ext JS