Over the last week or so I implemented AJAX into a web application for the first time. I am pretty impressed that it was very easy to do, thanks (at least in a small part) to the Prototype.js (good info here, too) JavaScript library. Also, I was very glad I discovered JSON (JavaScript Object Notation) which made processing data coming back from the AJAX request very easy. While I still generally find JavaScript a real pain to work in, I am much better with it n.ow than before (since I have written quite a lot of it over the last year or so). I would highly recommend the JavaScript Shell and the document A (Re)-Introduction to JavaScript.