code: function(fnName, fn) {
          var pageCount = this.cfg.getProperty(DEF_CFG.PAGES.key);
      
          for (var p=0;p<pageCount;++p) {
              this.pages[p][fnName] = fn;
          }
      }
docs: Adds a function to all child Calendars within this CalendarGroup.
  @method setChildFunction
  @param {String}  fnName  The name of the function
  @param {Function}  fn   The function to apply to each Calendar page object