static function display_children($parent, $level)
{
$clases = [1 => 'dropdown-toggle', 2 => 'dropdown-menu', 3 => 'dropdown-toggle'];
$data = Menu::menu($parent);
echo "<ul class='nav navbar-nav'>";
foreach ($data as $que) {
if ($que->Count > 0) {
echo "<li class='dropdown'>\n <a class='" . $clases[$level] . "'href='" . $que->url . "'>" . $level . " " . $que->nombre . "</a> <span class='caret'></span></a>";
Menu::display_children($que->id, $level + 1);
echo "</li>";
} elseif ($que->Count == 0) {
echo "<li><a href='" . $que->url . "'>" . $que->nombre . "</a></li>";
} else {
}
}
echo "</ul>";
}