Bring interactivity to any Web site with this easy-to-follow guidebook on JavaScript. Author Scott Duffy takes the fear out of working with a programming language by delivering instruction and theory in manageable doses, along with practical examples and plenty of ready-to-use code. Learn to write a program by exploring statements, variables, and functions--the three basic building blocks of any program. Use JavaScript as the behind-the-scenes director of your Web browser presentation. Create basic and advanced JavaScript applications--plus, modify existing scripts to suit your needs--all with the help of this great resource. Write your own program using statements, variables, and functions Learn the history of the language and what it can do for you Enable movement and interactivity for your Web site Determine which version of JavaScript is right for you Store dates, numbers, and more with built-in classes Create scripts that work in every browser Understand the basics of expressions, and organize your code into functions Cause text or graphics to change on mouse rollovers Automatically change a formatted date on a Web page Coordinate objects and events seamlessly with built-in or scripted classes.