关闭窗口时屏蔽关闭提示 IE6/IE7

 1<!--[if IE 6]>
 2  <script language="JavaScript" type="text/JavaScript">
 3    function MM_openBrWindow(theURL,winName,features) { //v2.0
 4      window.open(theURL,winName,features);
 5      window.opener=null;
 6      window.close();
 7    }
 8</script>
 9<![endif]-->

<!--[if IE 7]>
<script language="JavaScript" type="text/JavaScript">
    function MM_openBrWindow(theURL,winName,features) { //v2.0
      window.open(theURL,winName,features);
      window.open('','_top');
      window.opener=null;
      window.top.close();
    }
</script>
<![endif]-->