Start always Today in left calendar

i tried --
 var today;
        var now = new Date();
        if (now.getMonth() == 11) {
            today = new Date(now.getFullYear() + 1, 0, 1);
        } else {
            today = new Date(now.getFullYear(), now.getMonth() + 1, 1);
        }
...
 date: new Date(today)

the start day is marked well, but is not showing, 
no matter the initial date set, always begins with the same month

How 
