【 tulaoshi.com - ASP 】
                             
                            <SCRIPT language="javascript" 
  function IfWindowClosed() 
  {   
    var win = null; 
    try 
    { 
      window.opener.name = "ss"; 
      if ( window.opener.name != "ss" ) 
      { 
        win = window.open("quit.asp","","width=100,height=100,left=10000,top=10000"); 
        window.setTimeout("window.close();",0); 
      } 
      window.opener.name = ""; 
    } 
    catch(e) 
    { 
      win = window.open("quit.asp","","width=100,height=100,left=10000,top=10000"); 
      window.setTimeout("window.close();",0); 
    } 
  }    
  window.setInterval("IfWindowClosed()",100); 
  window.setTimeout("window.close();",510); 
</SCRIPT 
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用onunload事件打开上面的文件 
quit.asp为保存数据的文件,上面的文件用来检测窗口是关闭还是刷新 
ie5兼容,以前使用 window.opener.closed来判断,ie5不支持closed 属性。 
上面的代码经过多次测试,暂时没有发现问题