var stile = "top=20, left=20, width=550, height=600, status=no, menubar=no, toolbar=no scrollbar=yes";
     function Popup(apri) {
        window.open(apri, "", stile);
     }

  function openPopUp(url, width, height) {
        if (width == undefined)
            width = 500;

        if (height == undefined)
            height = 400;

        popupWindow = window.open(url, "popup", "width=" + width + ",height=" + height + ",resizable=yes,scrollbars=yes,toolbar=no,directories=no,status=no,menubar=no");
        popupWindow.focus();
    }