Kent Johnson has released YPulse a simple open source wrapper for the YUI Animation library that makes creating highlight fades and pulsing button glows a bit easier.
You pulse away with something like:
Stephen Celis got tired of wiring together two date pickers for the common use case of grabbing a date range, so he created timeframe, which is "Click-draggable. Range-makeable. A better calendar."
Based on Prototype, you can whip up some code such as:
And then you get:
Check out the live example to really see it at work.
John Dyer has seen other colour pickers but has come up with his own that mimics Photoshop:
Some pickers try to generate the entire color map in JavaScript by drawing a 256x256 grid made of div. This is very slow, which is why color pickers that go the JavaScript route often don't draw the entire map, but instead only 4x4 or 8x8 blocks.