问Zeroclipboard不会复制文本

EN

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script type="text/javascript" src="js/jquery.zclip.js"></script>
<script type="text/javascript" src="js/jquery.zclip.min.js"></script>
<script>
    $(document).ready(function() {
        $('a#copy-url').zclip({
            path: 'js/ZeroClipboard.swf',
            copy: $('input#shorturl').text()
        });
    });
</script><a href="#" id="copy-url" />Klik hier om de URL automatisch te kopi&euml;ren</a>
<div id="shorten_link">
    <input type="text" name="url" id="shorturl" value="<?php echo $nwUrl; ?>" />
</div>