We've found that the popular date library moment.js fails on date parsing when used alongside the calendar.js file included by default with web2py projects.
I've submitted a bug report: http://code.google.com/p/web2py/issues/detail?id=1243 We removed calendar.js from our projects, but I'm unclear as to what it's there for? Where is it used, and why is it included by default? Is there a reason web2py doesn't use jquery's datepicker instead? --