This script is very neat. Setup a bookmarlet. Visit del.icio.us. Click on the bookmarklet, and it instantly transforms your ugly del.icio.us web interface into a fancy AJAX-driven DHTML interface.
This is an amazing example of what AJAX can do. If you don’t know what del.icio.us is …well think of it as a way of storing a list of interesting links at a website that is accessible from anywehre.
del.icio.us direc.tor: Delivering A High-Performance AJAX Web Service Broker
del.icio.us direc.tor is a prototype for an alternative web-based rich UI for del.icio.us. It leverages the XML and XSL services of modern browsers to deliver a responsive interface for managing user accounts with a large number of records.
This delves a bit more into the actual code behind how this thing works. Not exactly reading for the light-hearted.
Wandering the Interwebs 