JavaScript is the most widely used scripting language for the Web and continues to grow in popularity. With this Premium Edition of Mastering JavaScript and its companion CD, savvy HTML users can learn to write JavaScript programs that will make their Web sites come alive! This is the most comprehensive tutorial and reference available, with information on both Netscape and Microsoft's enhancements of JavaScript. The book starts with everything beginners need to know and then moves on to more advanced topics, such as scripting ActiveX components, working with plug-ins, building multimedia applications, and interfacing with CGI programs. The author is a well-known Internet programming expert and has led the development of secure networks for the Department of Defense.