Can't selectOtherMonths

Can't selectOtherMonths


I can't use 'selectOtherMonths: true' .
In my page, I can show other months, but I can't select this, could
you help me.
I want select and click other months date.
Thanks!
My code is below:
<link type="text/css" href="../css/themes_3/ui.all.css"
rel="Stylesheet" />
<script type="text/javascript" src="../lib/jquery/jquery-1.3.1.js"></
script>
<script type="text/javascript" src="../lib/jquery/jquery-ui-
personalized-1.6rc6.js"></script>
<link type="text/css" href="../css/demos.css" rel="stylesheet" />
<script type="text/javascript">
$(document).ready(function(){
$('#cal').datepicker({
        showOtherMonths: true,
        selectOtherMonths: true,
        showOn: 'both',
        showButtonPanel: true,
        buttonImage: '../images/icon_calendar.gif',
        buttonText: 'View calendar',
        buttonImageOnly: true,
        duration: 'fast',
        numberOfMonths: 2
    });
});
</script>
</head>
<body>
<h5>calendar_3.html</h5>
    <div class="primarycontent" id=0>
    <input type="text" id="cal" value="Date picker" />
    </div>
</body>