// temp vars used below
var currentTime = new Date() 
var minDate = new Date(currentTime.getFullYear(), currentTime.getMonth(), +1); //one day next before month
var maxDate =  new Date(currentTime.getFullYear(), currentTime.getMonth() +2, +0); // one day before next month
$( "#datepicker" ).datepicker({ 
minDate: minDate, 
maxDate: maxDate 
});