Microsoft Internet Explorer
http://www.microsoft.com/workshop/prog/ie4/
Latest Version: 4.01

Dynamic HTML - SiteBuilder Network
http://www.microsoft.com/sitebuilder/workshop/author/dhtml/
a.k.a Anything you can do, I can do better.
The starting point for exploring Explorer's DHTML

Dynamic HTML Documentation - Internet Client SDK Invaluable!
http://www.microsoft.com/msdn/sdk/inetsdk/help/
The Complete Reference for Internet Explorer DHTML.

DHTML Dude
http://www.microsoft.com/sitebuilder/columnists/default.asp
Microsoft's own regular DHTML column with a name I wish I had thought of.

Microsoft DHTML Editing Component
http://www.microsoft.com/sitebuilder/features/dhtmledit.asp
Preview of a new DHTML editing component thacan be included in any HTML or COM based application.

Dynamic HTML Gallery
http://www.microsoft.com/gallery/files/html/
DHTML Examples in an Explorer flavour..

JavaScript, The Complete Reference Updated! - Must Have!!
http://developer.netscape.com/library/documentation/communicator/jsref/index.htm
Finally available, the comprehensive documentation for JavaScript, both client and server. Includes the JavaScript 1.2 addendum. The new JavaScript Bible. Can be viewed online, or downloaded as:

JavaScript Guide
http://developer.netscape.com/library/documentation/communicator/jsguide4/index.htm
Describes the core JavaScript language, including JavaScript 1.2 features. Serves as a quick reference to JavaScript structure. Full description of properties and methods, however, only in The JavaScript Reference. Can be viewed online, or downloaded as:

JavaScript 1.2 Addendum
http://developer.netscape.com/library/documentation/communicator/jsguide/js1_2.htm
Puts the Dynamic in Netscape's Dynamic HTML. Now also available as part of The JavaScript Reference. Can be viewed online, or downloaded as:

ECMAscript
http://www.ecma.ch/STAND/Ecma-262.htm
The new international web scripting language standard based on JavaScript 1.1, recently ratified by ECMA, now available for downloading, in
self-expanding MS WORD or Acrobat PDF format.
You read it here first: ECMA stands for European Computer Manufacturers Association

Microsoft Scripting
http://www.microsoft.com/scripting/
Microsoft's new home page for all its scripting docs, articles and links.

JScript
http://www.microsoft.com/jscript/
Complete Reference for JScript 3 for IE4.

What's New in JScript 3.0
http://www.microsoft.com/workshop/prog/ie4/jscript3.htm
Answers the question "How compatible is JScript 3 with JavaScript 1.2?"

VBScript
http://www.microsoft.com/vbscript/
The 8-track tape of scripting.

Netscape JavaScript Bugs
http://developer.netscape.com/support/bugs/index.html?content=known/javascript.html

Communicator CSS1 Known Issues
http://developer.netscape.com/support/bugs/known/css.html