Typecho自定义面包屑导航调用方法

<div class="crumbs_patch">
<a href="<?php $this->options->siteUrl(); ?>">Home</a> &raquo;</li>
<?php if ($this->is('index')): ?><!-- 页面为首页时 -->
Latest Post
<?php elseif ($this->is('post')): ?><!-- 页面为文章单页时 -->
<?php $this->category(); ?> &raquo; <?php $this->title() ?>
<?php else: ?><!-- 页面为其他页时 -->
<?php $this->archiveTitle(' &raquo; ','',''); ?>
<?php endif; ?>
</div>