Matt Hawley has been working around the clock, it seems, and has publicly released v2.0 of his free ASP.NET server controls.  Controls included:

CalendarPopup	a great calendar tool to allow users to choose a date
CollapsablePanel	a panel that can be collapsed on the client
FaqRepeater	databound FAQ-style listing control
ListTransfer	(re-order listbox or move items from one listbox to another)
MaskedTextBox	add a masked textbox to your forms
MultiTextDropDownList	drop-down list with multiple columns
MultiTextListBox	listbox with multiple columns
NumericBox	add a textbox that only accepts numerical input
TimePicker	add time selections to a form

I believe that each of these controls are cross-browser compatible.  Download the release candidate and check them out!