I understand what you mean.
Such a modification would require additional jQuery script and some modifications to existing code. Check out http://jsfiddle.net/jpXjH/6/ and see the example of such a feature.
You can use the jQuery code from this example as a start.
Also, you will have problems with the mobile display.
In my opinion, it would be much simpler to put a link at the bottom of tab content which would return the user to a tab display.
To do this, you will have to add an id to
<ul class="tabs vertical">, let’s say “tabs”:
<ul class="tabs vertical" id="tabs"> and the link at the end of tab content would look like:
<a href="#tabs">Return to tabs</a>.