jQuery Calendar
Set the stepMonths property of the jqxCalendar.
Author: http://jqwidgets.com
HTML
<script src="http:\\jqwidgets.com\jquery-widgets-demo\jqwidgets\globalization/globalize.js"></script>
<script src="http://jqwidgets.com/public/jqwidgets/jqx-all.js"></script>
<link rel="stylesheet" href="http://jqwidgets.com/public/jqwidgets/styles/jqx.base.css">
<link rel="stylesheet" href="http://jqwidgets.com/public/jqwidgets/styles/jqx.energyblue.css">
<div id='jqxCalendar'></div>
JavaScript
$("#jqxCalendar").jqxCalendar({
theme: 'energyblue',
width: '200px',
height: '200px',
stepMonths: 3
});