function bar(url) {
  win = window.open(url);
  return (typeof(win)=='object') ? false : true;
}

function kamerka(url) {
  win = window.open(url, 'kamerka',
        'width=680, height=650, location=no, '+
        'directories=no, menubar=no, toolbar=no, '+
        'status=no, resizable=no, scrollbars=no');
  win.focus();
  return (typeof(win)=='object') ? false : true;
}