jQuery multiselect + datepicker implementation

Hi,

i have look around for a module to implement jQuery multiselect dropdowns and datepicker for dropdowns and date related fields created with "Profile_checkboxes" ....to gather user information and dispaying it on the user profile

Like descriped here:
Multiselect: http://code.google.com/p/dropdown-check-list/

and for the datepicker : http://keith-wood.name/datepick.html

Any idea is greatly appriciated