Ecco lo script che ho creato.
codice:
<HTML>
<BODY onLoad="res();">
<SCRIPT language="Javascript1.2">
function res()
{
window.moveTo(0,0);
window.resizeTo(400,300);
var x=screen.width;
var y=screen.height;
var hx=x/2;
var hy=y/2;
var a=800; //Inserire i valori per il resize
var b=600; //della finestra popup a=x; b=y;
var ha=a/2;
var hb=b/2;
var dx=hx-ha;
var dy=(hy-hb)-20;
var param="width="+a+",height="+b+",left="+dx+",top="+dy+",screenX="+dx+",screenY="+dy;
window.open("http://www.google.com/","Popup",param);
}
</SCRIPT></BODY></HTML>