navbar
Github

	function navbar() {
		return _class('html')->navbar([
			'brand'	=> [
				'link'	=> url('/'),
				'name'	=> 'Title',
			],
			[
				'link'	=> url('/home'),
				'name'	=> 'Home',
			],
			[
				'link'	=> url('/link1'),
				'name'	=> 'Link1',
			],
			[
				'link'	=> url('/link2'),
				'name'	=> 'Link2',
			],
		]);
	}
	function navbar($data = [], $extra = []) {
		$extra['id'] = $extra['id'] ?: __FUNCTION__.'_'.++$this->_ids[__FUNCTION__];
		$items = [];
		$brand = '';
		if (isset($data['brand'])) {
			$b = $data['brand'];
			unset($data['brand']);
			$brand = '<a class="brand navbar-brand'.($b['class'] ? ' '.$b['class'] : '').'" href="'.$b['link'].'" title="'.$b['name'].'">'.$b['name'].'</a>';
		}
		$data = _prepare_html($data);
		foreach ((array)$data as $k => $v) {
			if (isset($extra['selected'])) {
				$is_selected = ($extra['selected'] == $k);
			} else {
				$is_selected = (++$i == 1);
			}
			$class_item = $v['class_item'] ?: $extra['class_item'];
			$badge = $v['badge'] ? ' <sup class="badge badge-'.($v['class_badge'] ?: 'info').'">'.$v['badge'].'</sup>' : '';
			$items[] = '<li class="'.($is_selected ? ' active' : ''). ($class_item ? ' '.$class_item : '').'"><a href="'.$v['link'].'" title="'.$v['name'].'">'. $v['name']. $badge. '</a></li>';
		}
		return
			'<div class="navbar navbar-default'.($extra['class'] ? ' '.$extra['class'] : '').'" id="'.$extra['id'].'">
				<div class="navbar-inner navbar-header">'
					.$brand
					.'<ul class="nav navbar-nav">'.implode(PHP_EOL, (array)$items).'</a>
				</div>
			</div>';
	}
Navbar widget based on bootstrap navbar markup.

http://getbootstrap.com/components/#navbar