>[info] 判断当前页面是否**一级**导航
```php
{eq name="catid1" value="当前栏目ID"}
...
{/eq}
```
<br/>
>[info] 判断当前页面是否**二级**导航
```php
{eq name="catid2" value="当前栏目ID"}
...
{/eq}
```
<br/>
>[info] 判断当前页面是否**三级**导航
```php
{eq name="catid3" value="当前栏目ID"}
...
{/eq}
```
