A Coding Fool: jQuery 1.3 Cheat Sheet
http://acodingfool.typepad.com/blog/jquery-13-cheat-sheet.html
Release:jQuery 1.3 - jQuery JavaScript Library
http://docs.jquery.com/Release:jQuery_1.3

Sizzle (new selector engine, available separately), Live Events (a variant of event delegation), Feature Detection (instead of user agent sniffing), faster HTML injection and more.

January 14th, 2009: The jQuery team is pleased to release the latest major release of the jQuery JavaScript library! A lot of coding, testing, and documenting has gone in to this release and we're really quite proud of it.

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