<script type="text/javascript">
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     function Popup(apri) {
        window.open(apri, "", stile);
     }
 //-->
</script> 

<script type="text/javascript">
 <!--
 function PopupCentrata() {
   var w = 400;
   var h = 250;
   var l = Math.floor((screen.width-w)/2);
   var t = Math.floor((screen.height-h)/2);
      window.open("mioFile.htm","","width=" + w + ",height=" + h + ",top=" + t + ",left=" + l);
 }
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</script> 

<script type="text/javascript">
 <!--
 function PopupCentrata(pagina) {
   var w = 400;
   var h = 250;
   var l = Math.floor((screen.width-w)/2);
   var t = Math.floor((screen.height-h)/2);
      window.open(pagina,"","width=" + w + ",height=" + h + ",top=" + t + ",left=" + l);
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</script> 

<script language="javascript">
var win = null;
function NewWindow(mypage,myname,w,h){
LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
settings =
'height='+h+',width='+w+',top='+TopPosition+',left  ='+LeftPosition+',scrollbars=no ,menubar=no ,resizable=no'
win = window.open(mypage,myname,settings)
}

</script>