javascript中实现新更弹出窗口并刷新父窗口

<div class="demo-container">
<SCRIPT  language=javascript>
<!--
function  showtime()
{
 var now = new  Date();
 var hours = now.getHours();
 var minutes = now.getMinutes();
 var seconds = now.getSeconds();
 var timeValue = "" + hours;
 timeValue += ((minutes < 10) ? ":0" : ":") + minutes;
 timeValue += ((seconds < 10) ? ":0" : ":") + seconds;

 document.write(timeValue);
}
showtime();     
//-->
</SCRIPT>

<br /><br />

<a href="javascript:void(0)" onclick="window.open('http://www.111cn.net','child','width=400,height=300,left=200,top=200');">打开子窗口</a>
 
</div>