Yahoo UI Library (JavaScript + AJAX) is Worth Looking
By Angsuman Chakraborty, Gaea News NetworkFriday, February 17, 2006
Yahoo released an UI library for web applications, developed using Javascript and AJAX.
It provides some nifty components like dual-calendar, tree, drag-and-drop, slidedrs etc.
Very much worth adding to your toolkit. Personally I found the performance somewhat sluggish.
DOJO is another alternative (better?).
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