function newwin(url, naam, breedte, hoogte, resize, scrollbars) {
  var winopen = window.open(url, naam, "width=" + breedte + ",height=" + hoogte + ",left=10, top=10, screenx=10, directories=no, location=no, menubar=no, resizable=" + resize + ",scrollbars=" + scrollbars + ",status=no,toolbar=no");
  winopen.focus();
}