HTML

<base target=htmz>

<!-- Loads static HTML onto #my-tab-panel -->
<div role="tablist">
  <a role="tab" href="/dog.html#my-tab-panel">Dog</a> |
  <a role="tab" href="/cat.html#my-tab-panel">Cat</a> |
  <a role="tab" href="/horse.html#my-tab-panel">Horse</a>
</div>

<!-- This will be replaced by the loaded HTML -->
<div id="my-tab-panel" role="tabpanel"></div>

Result