pbootcms内页子栏目当前栏目如何实现高亮显示

{pboot:nav num=10 parent={sort:tcode}}

{pboot:if('[nav:scode]'=='{sort:scode}')}

<li><a class="biglink left_active" href="[nav:link]">[nav:name]</a></li>

{else}

<li><a class="biglink" href="[nav:link]">[nav:name]</a></li>

{/pboot:if}

{/pboot:nav}