function go2url (id) {
if (id == '0') {self.location = 'http://prag-guide.cz/index.php'}
else {self.location = 'http://prag-guide.cz/index.php?id=' + id}
}

function change(id) {
  document.getElementById('a_'+id).style.color = '#7e8c39';  
  document.getElementById('li_'+id).style.background = 'url(\'../img/bg-menu-selected.png\') top left repeat-x';
  document.getElementById('li_'+id).style.cursor = 'hand';
 // document.getElementById('li_'+id).style.cursor = 'pointer';
  
}

function change_back(id) {
  document.getElementById('a_'+id).style.color = '#fefefe';
  document.getElementById('li_'+id).style.background = 'url(\'../img/bg-menu.png\') top left repeat-x';
  document.getElementById('li_'+id).style.cursor = 'default';
}