First of all I have to say that to create a pure AJAX file upload system is not possible because of security limitations of JavaScript. All of the Ajax upload systems I know use some third party tool/package or only mimics the AJAX feeling. Even so it makes file upload process a bit nicer. In the next section I will present you a solution which imitates the AJAX process, but uses a normal upload process and iFrams.

To view: http://www.darkmindz.com/articles/ajax-file-upload-tutorial-num264.html

In this tutorial you will learn the basics of AJAX using Prototype (A JavaScript framework) and PHP.

http://www.vipercreations.com/tutorials/AJAX/34.html

Create an Ajax autosuggest/autocomplete search form with results from database by following this tutorial

http://www.roscripts.com/Ajax_autosuggest_autocomplete_from_database-154.html

Learn how to use AJAX in order to process and validate your forms.

http://www.roscripts.com/Ajax_form_validation-152.html

A tutorial to teach you how to use Ajax to collect email addresses for your

newsletter.

To view this tutorial: http://www.roscripts.com/Ajax_newsletter_form-146.html

In this tutorial we will learn how to implement a rating system to a blog.

To view this tutorial: http://www.roscripts.com/AJAX_PHP_rating_script-145.html

A tutorial that shows you how to create a draggable sortable lists that can be saved when the order is changed.

To view: http://www.zenperfect.com/2007/07/26/sortable-lists-in-php-walkthrough/

This tutorial shows how you can implement an advanced window which can be modal, dragable, resizable, closable with the hijax framework Gaia Ajax Widgets. Gaia is an open source framework for ASP.NET 2.0.

To view:

http://ajaxwidgets.com/Blogs/thomas/a_gaia_ajax_window_tutorial.bb

A tutorial for explaining how to set up a basic AJAX engine.

To view: http://tutorials.yaxay.com/showthread.php?t=45776

A good beginners guide tutorial to Ajax.

To view this tutorial: http://good-tutorials.com/tutorials/javascript/ajax?p=2&s=