This book is about developing Rich Internet Applications / Single Page Applications using "Single Master Application Resource Template" web pages. These "SMART-Pages" slot content resources into web site templates, and hide and show site sections as users navigate sites. The emphasis is on providing true end-user functionality, and cross-browser design, coding, testing, and debugging are reviewed extensively. Topics include using HTML, CSS, JavaScript, and AJAX in browsers, and PHP on servers. And more than 80 screen shots and over 80 code examples are provided in the book. The accompanying web site has fully operational examples of the code discussed. Working samples on the site include mashups, and database-backed web pages that use databases from several vendors. And all the widgets discussed in the book are available for download at the accompanying web site. New in the 2nd edition is a chapter on Cyber Security that includes a detailed description of the Stanford JavaScript Crypto Library ( SJCL ). And the SJCL is also included in the widgets.zip downloadable file, along with the other widgets described in the book.