disable 2 days after today datepicker
<p>I want to disable 2 days after today with jquery datepicker, for example today is 12/29/2016 I want the enable date from 1/1/2017. I look the someone code in jsfiddle but I don't know what should I edit 
<a href="https://jsfiddle.net/AcbUf/574/" rel="nofollow noreferrer">https://jsfiddle.net/AcbUf/574/</a></p>

<p><strong>Html</strong></p>

<pre><code>&lt;input type="text" id="from" /&gt;
&lt;input type="text" id="to" /&gt;
</code></pre>

<p><strong>Js</strong></p>

<pre><code>$(document).ready(function () {
var d = new Date();
var monthNames = ["January", "February", "March", "April", "May", "June",
    "July", "August", "September", "October", "November", "December"];
today = monthNames[d.getMonth()] + ' ' + d.getDate() + ' ' + d.getFullYear();

$('#to').attr('disabled', 'disabled');
$('#from').datepicker({
    defaultDate: "+3d",
    minDate: 1,
    maxDate: "+3M",
    dateFormat: 'dd M yy',
    showOtherMonths: true,
    changeMonth: true,
    selectOtherMonths: true,
    required: true,
    showOn: "focus",
    numberOfMonths: 1,
});

$('#from').change(function () {
    var from = $('#from').datepicker('getDate');
    var date_diff = Math.ceil((from.getTime() - Date.parse(today)) / 86400000);
    var maxDate_d = date_diff+7+'d';
    date_diff = date_diff + 'd';
    $('#to').val('').removeAttr('disabled').removeClass('hasDatepicker').datepicker({
        dateFormat: 'dd.mm.yy',
        minDate: date_diff,
        maxDate: maxDate_d
    });
});

$('#to').keyup(function () {
    $(this).val('');
    alert('Please select date from Calendar');
});
$('#from').keyup(function () {
    $('#from,#to').val('');
    $('#to').attr('disabled', 'disabled');
    alert('Please select date from Calendar');
});
});
</code></pre>