Limit a link's parents 'ul, ol' inside tinyNav scope

Limit 'a' link's parents 'ul, ol' inside TinyNav scope, such TinyNav will function correctly when inside other 'ul, ol'

Like this:
```
<ul><!-- TinyNav wrapped in a 'ul' -->
    <ul class="tinyNav">
      <li class="selected"><a href="demo.html">Demo page</a></li>
      <li><a href="http://bing.com">Bing</a> </li>
      <li><a href="http://yahoo.com">Yahoo</a></li>
    </ul>
</ul>
```