Kevin Yank writes about
Simply javascript: The Three Layers of the Web [JavaScript & AJAX Tutorials]
In my viwe there are four layers:
What can be done at the lowest level on the web server
On an Apache server:
Network and System Administration I 10
Testing my sites in this
Search engine SPAM detector
and I get a lot of hidden text warnings, even if all of them are part of the DreamWeaver templates (navigation). A nightmare If I have to correct that.