I'm trying to validate input as a date, using the Y.DataType.Date.parse() function and isValidDate(). My trouble is that in Firefox, Date.parse() accepts values that I believe should be considered
invalid:

var d = Y.DataType.Date.parse('1/19/2012 112:011'); //note the time

var value = d.toString();                           //"Mon Jan 23 2012 16:11:00 GMT-0800 (PST)"

var isValid = Y.DataType.Date.isValidDate(d);       //true

Similarly, entering invalid dates like February 31st of March 33rd simply returns a valid Date object.

If I understand correctly, Y.DataType.Date.parse passes the date parsing on to the browser natively (the above from Firefox 10.0.1; Webkit works as I'd expect). Since FF is considerably more lax in
its date parsing, this seems like a poor method for validating user input.