Based spiritually on Josh Nathanson’s ClockPick, this is an improved time chooser with some of the options carried over from ui.datepicker.
I don’t really know much of the ui core, so I ended up making do with what I had.
Anyway, I’m using this in production (that is, it’s purpose-developed, and I’m in the middle of project development for something requiring a flexible time picker to go along side the date picker), and it’s thus tested in IE, FF and Safari. I’ll document it later. For now, the options are described in lines 67 through 74.