For some effects, it is desirable to wrap the <a> element with an html element. A common use-case is for creating a certain kind of "tab" effect (using "sliding-door" image backgrounds) and having the anchor highlight the entire tab.

this patch adds an optional simple "wrapperElement" to the <cmsu:simpleNavigation> so that it can be used to output elements that are wrapped with a given tag. When the tag is used, the following output will result:

<cmsu:simpleNavigation startLevel="3" style="mystyle" wrapperElement="span"/>
Will output the following:
<ul class="level3 mystyle">
<li><span><a href="...">page 1 name </a></span></li>
<li><span><a href="...">page 2 name </a></span></li>
<li class="trail"><span><a href="...">page 3 name </a></span>
<ul class="level3">
<li><span><a href="...">subpage 1 name </a></span></li>
<li><span><a href="...">subpage 2 name </a></span></li>
<li><span><strong><a href="...">selected page name </a></span></strong></li>
</ul>
</li>
<li><span><a href="...">page 4 name </a></span></li>
</ul>

Any simple element can be specified, (such as "em", "strong", "span", "div"... etc)