Setting minDate and maxDate for jquery datepicker

$(function () {
    var dateToday = new Date();
    var startDate = new Date(dateToday.getFullYear(), 
                 dateToday.getMonth(), dateToday.getDate() - 30);
    $("#txtFromDate").datepicker({
        minDate: startDate,
        maxDate: dateToday
    });
    $("#txtToDate").datepicker({
        minDate: startDate,
        maxDate: dateToday
    });
});