// otevirani do novych oken
function bar(url) {
  wasOpen = false;
  win = window.open(url);    
  return (typeof(win) == 'object')?true:false;
}
function popup(url) {
  wasOpen = false;
  win = window.open(url);    
  return (typeof(win) == 'object')?true:false;
}