Introduction

Over the last decade or so, the World Wide Web has grown in scope from being a relatively simple information repository to becoming the first stop for many people when seeking entertainment, education, news, or business resources.

Websites themselves need no longer be limited to a number of static pages containing text and perhaps simple images; the tools now available allow the development of highly interactive and engaging pages involving animations, visual effects, context-sensitive content, embedded productivity tools, and much more.

The list of technologies available for producing such pages is broad. However, those based on Open Source licenses have become, and remain, highly popular due to their typically low (often zero) ...

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