function okence(url,winName,w,h) { //v2.0
  var winl = (screen.width - w) / 2;
  var wint = (screen.height - h) / 2;
  window.open(url,winName,'width='+w+',height='+h+',top='+wint+',left='+winl+',menubar=no,location=no,resizable=no,scrollbars=yes,status=no');
}