phpcmsV9 如果实现导航切换
其实v9和08是一样的 08只不过是通过body=onlod($catid)方法加载
而v9我们可以通过判断导航id还当前打开页面的栏目id是否相等
代码：
{if($r[catid]==$catid)}加载指定的css样式{/if}
有的可能是二级页面或者更多级次的页面只需加载他是否和父类的id相等就行
{if($r[catid]==$category[cid][catid] $$ $r[catid]==$catid)}加载css样式{/if}
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