DHTML

You can take the dynamic nature of javascript, and add the positioning abilities of CSS to create dynamic pages that respond to the user's clicks and drags etc.

Hide and Display Text with DHTML
Combine CSS, JavaScript, and HTML to hide and display text and other elements.

dHTML Navbar
dHTML Navbar(Dynamic HTML) - sometimes known as a javascript dropdown menus or javascript navbar.

Dynamic HTML examples
Quickly check out what you can do with Dynamic HTML.

Dynamic HTML Tutorial (Webmonkey, 9 Mar 1998)
By mastering client-side scripting, the DOM, and stylesheets, you, too, can become a dynamic HTML dynamo.

Making Stuff Zoom Around (Webmonkey, 6 Aug 1997)
Sure it looks cool, but making images fly ain't easy. Can you say, "cross-platform incompatiblity?"

NAME, ID, and CLASS in Dynamic HTML and JavaScript Image Arrays (Webmonkey, 5 Feb 1998)
NAME, ID, and CLASS are used as identifiers for other elements like stylesheets and server-side scripts. But which one to use?