jQuery UI按钮-如何更改样式和图标检查按钮?

<script type="text/javascript">
    jQuery(document).ready(function($){
        $('.date').datepicker($.datepicker.regional['cs']);
        $(".votePollState").button({ icons: {primary:'ui-icon-closethick'},text: false });
    });
</script>
<script type="text/javascript">
    jQuery(docu