The market for mobile apps continues to evolve at a breakneck pace, as tablets join the parade of smartphones and feature phones. If you're an experienced web developer, this second edition of this popular book shows you how to build HTML5 and CSS3-based apps that access GPS tools, calendars, and other features in these mobile devices. You'll learn how to build a standard app core that you can extend to work with specific devices. You'll also discover how to deal with platform variations, finicky browsers, CSS compatibility, Ajax design patterns for mobile development, and other issues. Learn how to use your existing web skills to move into mobile development Discover the particulars and pitfalls of building mobile apps with HTML, CSS, and other standard web tools Create effective user interfaces in the mobile environment Understand variations among iOS, Android, Windows Phone, BlackBerry, and other mobile platforms Bypass the browser to create offline apps and widgets using web technologies Build apps for the App Store, Android Market, Windows Phone Marketplace, App World, and other online retailers