@SCRIPT:
outeritem1.accessibilityIndex
outeritem2.accessibilityIndex
middleitem1.accessibilityIndex
middleitem2.accessibilityIndex
inneritem1.accessibilityIndex
inneritem2.accessibilityIndex
-->
<!DOCTYPE html>
<html>
<body>
<ul role="tree">
<li id="outeritem1" role="treeitem" aria-checked="mixed"><a href="#animals">Animals</a>
<ul role="group">
<li id="middleitem1"role="treeitem"><a href="#domesticated">Domesticated</a>
<ul role="group">
<li id="inneritem1" role="treeitem" aria-checked="true"><a href="#dog">Dog</a></li>
<li id="inneritem2" role="treeitem" aria-checked="false"><a href="#cat">Cat</a></li>
</ul>
</li>
<li id="middleitem2" role="treeitem"><a href="#wild">Wild</a></li>
</ul>
</li>
<li id="outeritem2" role="treeitem"><a href="#plants">Plants</a></li>
</ul>
</body>
</html>