Vælg mellem IE og netscape

Kan man få dette dokument til at hente en anden appletplayer, hvis det er netscape der åbne dokument ? (Appletplayer.jar og easy002.jar)

<body onload='main()'>
<p><b>Loading, please wait...</b></p>
<p><img src='Progress.gif' align='middle' width='100' height='20'></p>

<applet code='AppletPlayer' cabbase='easy0002/easy0002.cab, AppletPlayer.cab'align='top' width='1' height='1' name='AppletPlayer' codebase=''>
<param name='tutorNo' value='easy0002'>
<param name='url' value=''>
<param name='standalone' value='1'>
<param name='audio' value='0'>
<param name='media' value='0'>
<param name='lms' value='1'>
<param name='index' value='0'>
</applet>

<script language=JavaScript> 
var LMS = false;

function main() {   
    ret=document.AppletPlayer.jsCheck(); 

    if (ret=='0') {   
        setTimeout('main()',100);   
        return; 
    } 
    else if (ret=='1') {   
        parent.close();
        self.close(); 
    } 
    else if (ret=='2') {   
        self.close();     
        alert('Lessonimages larger than screenresolution. Set screenresolution to at least 1024 x 768.'); 
    }   

    self.close(); 
}
</script>
</body>