[js window] 关闭窗口

<div id="show-pic">
<div onclick="windowClose()">关闭窗口</div>

</div>
<script  language="JavaScript" type="text/javascript">
function windowClose()
{
    var close_window = '您是否关闭当前窗口';
    if(window.confirm(close_window))
    {
        window.opener=null;
        window.open('','_self');
        window.close();
    }
}
</script>