Start always Today in left calendar

[xd1510]

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