prova questo

codice:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml" lang="it" xml:lang="it">

<head>
<title>Test</title>

<script type="text/javascript">
// <![CDATA[
    var stackPopup = new Array();

    function openPopup(page, title, params) {
    
        numPopup = stackPopup.length;
        stackPopup.push(numPopup);        
        stackPopup[numPopup] = window.open(page, title, params);
        
    }


    function closeAllPopup() {
      
        if (stackPopup.length == 0) return;
        for (i=0; i<stackPopup.length; i++) {
          stackPopup[i].close();
        }
      
    }

    window.onunload = function() {
      closeAllPopup();
    }
// ]]>
</script>
</head>

<body>
    Apri un pò di popup
    


    e poi Fai un refresh (o premi F5)
</body>
</html>

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