Videobox is a 6kb script, which shows your videos in the page with an overlay. It was inspired from Lightbox.v2 and uses some of the Slimbox's code. It's written for the wonderful mootools library. And used swfobject to embed flash.
I thought i would write this tutorial because most of the auto completer applications i have seen just dump the code into a zip and tell you how to use it rather than how and why it works, knowing about this enables you to customise it a lot more (this has been demonstrated with the other apps i have written here)!
hnGuestbook is a simple guestbook that uses a flat file to store the messages. That means that no SQL database is required. The guestbook uses AJAX technology, so you could view the pages, and sign the guestbook without reloading the whole page. Some of the features are a bad words filter, spam protection, and a simple admin panel to manage the messages.
Control.TextArea provides a toolbar for textareas where users are entering text in one of these markup languages. In addition to a toolbar it provides access to a cross browser text selection and manipulation API so that creating new functionality, or integration with your custom application features is vastly easier.