javascript实现关闭子窗口同时刷新父窗口

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

子窗口
<script language="JavaScript" type="text/javascript">
<!--
function refreshParent() {   
window.opener.location.href = window.opener.location.href;    
if (window.opener.progressWindow)   
{        
window.opener.progressWindow.close();    
}    
window.close();
} //-->
</script> 

<a href="javascript:void(0)" onclick="refreshParent()">刷新父窗口并关闭当前窗口</a>