This is a new kind of JavaScript book. It's not cut'n'paste, it's not a reference, and it's not an exhaustive investigation of the JavaScript language. It is about client-side, web focused, and task-oriented JavaScript. JavaScript is a core skill for web professionals, and as every web professional knows, client-side JavaScript can produce all sorts of glitches and bugs. 'Practical JavaScript for the Usable Web' takes a two pronged approach to learning the JavaScript that you need to get your work done: teaching the core client-side JavaScript that you need to incorporate usable interactivity into your web applications, including many short functional scripts, and building up a complete application with shopping cart functionality. When you have finished working with this book, you'll have a thorough grounding in Client-side JavaScript, and be able to construct your own client-side functionality quickly, easily, and without falling into any of the usability traps that this technology leaves wide open. This book covers: DHTML for IE4 and NN4 browsers, and the Dom for the latest browsers Usability techniques Working scripts that can be incorporated into your web applications immediately Step-by-step breakdown of JavaScript shopping cart functionality Advanced Data Validation Techniques Book Info Covers DHTML for IE4 and NN4 browsers, and the Dom for the latest browsers. Discusses working scripts that can be incorporated into your web applications immediately. Provides advanced data validation techniques. From the Publisher This is for readers who are either learning JavaScript from scratch, or who have a little experience - perhaps with DreamWeaver behaviors, or incorporating scripts into their pages. It assumes a though understanding of HTML, and a little CSS experience. About the Author After an initial stint as a Visual Basic applications programmer at the Ministry of Defence in the UK, Paul Wilton found himself pulled into the Net. He is currently working freelance and is busy trying to piece together the Microsoft .Net jigsaw. Paul's main skills are in developing web front ends using DHTML, JavaScript, VBScript, and Visual Basic, and back-end solutions with ASP, Visual Basic, and SQL Server. Stephen Williams recently co-founded Chimera Digital Ltd, a company that brings together expertise in the fields of education, video production and web technologies, and produces content packages suitable for business in training, promotion, marketing, and more. Prior to this he worked for Edison Interactive, where he was the lead Vignette developer for their Switch2 entertainment portal web site. His interests in artificial life lead him from his PhD in Molecular Microbiology at the University of Birmingham, into object-oriented programming and the Internet. Sing Li is an active author, consultant, and entrepreneur. He has written for popular technical journals and is the creator of the "Internet Global Phone", one of the very first Internet phones available. His wide-ranging consulting expertise spans Internet and Intranet systems design, distributed architectures, web services, embedded systems, real-time technologies, and cross-platform software design. He also participates in the Jini and Jxta communities.