
We do a lot of work with our clients working on testing and improving the performance of various web-based systems. One of the sites that is a fantastic resource for this is Yahoo Developer Network – Exceptional Performance site. They also have a fantastic tool called YSlow that works with the Firebug Mozilla plugin.
When most folks look at improving performance they focus on improving server side throughput and response time. These resources from Yahoo take a different approach in that they focus on improving the perceived client-side performance. By restructuring HTML, CSS and JavaScript you can help the browser make better forward-looking decisions that allow it to partially render pages more quickly.
–Dan
dan _at_ denimgroup.com