Asp.net Ajax DatePicker

Does somone knows where can I find an ajax DatePicker to use in Asp.net 2010? I want it to work like the one in winforms.

TY

ajaxToolkit:CalendarExtender ?

http://www.asp.net/ajax/ajaxcontroltoolkit/Samples/Calendar/Calendar.aspx

The Ajax Control Toolkit has the CalendarExtender and also jQuery date picker plugins.

http://www.asp.net/ajax/ajaxcontroltoolkit/Samples/Calendar/Calendar.aspx

http://marcgrabanski.com/pages/code/jquery-ui-datepicker