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Introduction to JSON and PHP
Introduction to Computer Storage and Memory
Cross Browser CSS Opacity and the JavaScript Fade / Fading Effect100%
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Optimizing Web Sites for High Performance (YSlow Guide)
By Andrew Johnson (archived Dec 21, 2008)
The popular Firebug add on YSlow by Yahoo! is a great tool that can show you some very easy yet powerful ways a web site can be optimized. Such optimizations include fewer HTTP requests, content delivery networks, far future expirations, gzip compression, CSS and JavaScript ...
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Optimize Your Web Site by Using CSS Image Sprites
By Andrew Johnson (archived Dec 12, 2008)
Many web developers have replaced image slicing for a much better technique known as CSS Sprites. This technique results in cleaner markup, fewer HTTP requests, smaller file sizes and saves bandwidth. In this article you'll learn how CSS Sprites work and how to use them.