Event time on Google analytic

<script type="text/javascript">
    var currentTime = new Date()
    var hours = currentTime.getHours()
    var minutes = currentTime.getMinutes()
    var timeStamp = (hours + ":" + minutes + " ");</script>

onClick="_gaq.push(['_trackEvent', 'cata', 'act', 'label','timeStamp '])"