Assuming you have the desired vertical menu to use with this script, getting the two to work should be simple enough. The tabs used by the script is simply a regular UL list, and with CSS, can be transformed to a vertical layout:
Code:
<ul id="countrytabs" class="shadetabs">
<li><a href="#" rel="country1" class="selected">Tab 1</a></li>
<li><a href="#" rel="country2">Tab 2</a></li>
<li><a href="#" rel="country3">Tab 3</a></li>
<li><a href="#" rel="country4">Tab 4</a></li>
<li><a href="http://www.dynamicdrive.com">Dynamic Drive</a></li>
</ul>
Bookmarks