[jQuery] increment a date inside of an array fetched by json and processed by plugin

[marksimon]

I'm using this plugin 'fullCalendar" (http://arshaw.com/fullcalendar/
docs/) that is a very nice jquery plugin. It has some parameters for
events where the end date of the event is displayed as the day before
the end date of the data that feeds the calendar. Not sure why that is
but I need a workaround because my data comes from a database where
the end date of an event is truly the end date. (i.e. if event ends
2009-07-22 the calendar renders it through 2009-07-21). The calendar
is populated from a json array. Can you help me write code to
increment the 'end' values within the returned
array?                                                               $
(document).ready(function() {

                $('#calendar').fullCalendar({
                        draggable: true,
                        eventSources: [
                                        $.fullCalendar.gcalFeed(
                                        
'http://www.google.com/calendar/feeds/usa__en
%40holiday.calendar.google.com/public/basic',
                                        {draggable: false, className: 
'mygcal'}),

                                        "../sources-json/travel-cal.php",
                                        "../sources-json/projects-cal.php",
                                        "../sources-json/time-byday-cal.php"

                                ]
                });

        });