The documentation for the Datepicker widget includes the option "constrainInput". I do not see this option in the source code for ui.datepicker.js versions 1.5.2 or 1.6 RC2. Am a missing something or has the version supporting this option not yet been released? http://docs.jquery.com/UI/Datepicker/datepicker#options http://ui.jquery.com/bugs/changeset/755 Any assistance is appreciated.