function NewWindow(mypage,myname,w,h,scroll, menu, res){
    var winl = (screen.width - w) / 2;
    var wint = (screen.height - h) / 2;
    winprops = 'height=' + h + ',width=' + w + ',top=' + wint + ',left=' + winl + ',scrollbars=' + scroll + 
    ', resizable=' + res + ', location=no, directories=no, status=yes, menubar=' + menu;
    win = window.open(mypage,myname,winprops);
    if(parseInt(navigator.appVersion) > 3){
        win.window.focus();
    }
}