Vey good link for Ajax and javascript  developers.  tooo good must visit

AJAX Auto Completer (5)
AJAX Instant Edit (3)
AJAX Menus, Tabs (9)
AJAX Date, Time, Calendars (2)
AJAX Interactive Elements (3)
AJAX Developer’s Suite (16)
Enhanced AJAX Solutions (7)
Ajax Forms (9)
AJAX Grids, Tables (5)
AJAX Lightboxes, Galleries, Showcases (5)
Visual Effects, Animation (10)
Useful Basic JavaScripts (5)
Galleries, Resources (5)

and more.. its a treat for Ajax and javascript developers.

Visit http://www.smashingmagazine.com/2007/06/20/ajax-javascript-solutions-for-professional-coding/