Datepicker fiddle

HTML

<div class="demo">
    <label for="from">From</label>
    <input type="text" id="from" name="from" />
    <br/>
    <label for="resultant">Resultant</label>
    <input type="text" id="resultant" />
</div>

JavaScript

$(function () {
     $("#from").datepicker({
        defaultDate: "+1w",
        changeMonth: true,
        numberOfMonths: 3,
        onSelect: function (selectedDate) {
            this.focus();

        },
        onClose: function (selectedDate) {            
            $('#resultant').datepicker("option", "minDate", selectedDate);
        }
    });

    $("#resultant").datepicker({
        defaultDate: "+1w",
        changeMonth: true,
        numberOfMonths: 3       
    });    
});