NJ Transit has a special present for traveling families: the agency's Family SuperSaver fares will be available all week between the Christmas/Chanuka/Kwanzaa and New Year's weekends.  The fares, normally available only on weekends or holidays, allow one or two children under age 12 to travel for free with each fare-paying customer.  The special fare went into effect as usual on Friday, Dec. 23 at 7 p.m., and will stay in effect "the entire holiday period."  The precise ending of the deal was not specified, but presumably  this will be 6 a.m. Tuesday, January 3.