If set to true, show datepicker on input focus.
Examples
True
<input id="datepicker" width="312" />
<script>
$('#datepicker').datepicker({ showOnFocus: true, showRightIcon: false });
</script>
False
<input id="datepicker" width="312" />
<script>
$('#datepicker').datepicker({ showOnFocus: false });
</script>