jquery datepicker not working with windows phone

jquery datepicker not working with windows phone

jquery datepicker not working with windows phone 7. It is working with IE
9. In phone keyboard will appear instead of datepicker.
<script>
$(function() {
$( "#from-date" ).datepicker();
});
</script>
<input type="text" name="departure" id="from-date" value=""
novalidate="true" />