To make it sure if the ARIA role are being render on proper markup, I gathered the following markup which is using YUI tabset and Sparkle tabset with and without label facet. It shows that roles are being applied properly.
YUI Tabset:
<div class="yui-navset yui-navset-top" id="demo">
<ul class="yui-nav" role="tablist">
<li role="presentation" title="active" class="selected">
<a tabindex="-1" id="yui-gen0" role="tab">
<em>Tab One Label</em>
</a>
</li>
<li role="presentation" title="">
<a tabindex="-1" id="yui-gen1" role="tab">
<em>Tab Two Label</em>
</a>
</li>
</ul>
<div class="yui-content">
<div id="tab1" role="tabpanel" labelledby="yui-gen0"><p>Tab One Content</p></div>
<div id="tab2" role="tabpanel" labelledby="yui-gen1" class="yui-hidden"><p>Tab Two Content</p></div>
<div id="tab3" role="tabpanel" labelledby="yui-gen2" class="yui-hidden"><p>Tab Three Content</p></div>
</div>
------------------------------
Sparkle Tabset without label facet:
<div class="yui-navset yui-navset-top">
<ul class="yui-nav" role="tablist">
<li class="selected" title="active" role="presentation">
<div class="yui-navdiv" tabindex="0" id="yui-gen0" role="tab">
<em>
Tab contents
<a style="visibility: hidden;"></a>
</em>
</div>
</li>
<li role="presentation">
<div class="yui-navdiv" tabindex="-1" id="yui-gen1" role="tab">
<em>
Disabled tab
<a style="visibility: hidden;"></a>
</em>
</div>
</li>
</ul>
<div id="j_idt8:j_idt10cnt" class="yui-content">
<div id="j_idt8:j_idt11" class="" role="tabpanel" labelledby="yui-gen0">
YUI generally
</div>
<div id="j_idt8:j_idt13" class="yui-hidden" role="tabpanel" labelledby="yui-gen1">
The TabView control
</div>
</div>
<div>
------------------------
Sparkle Tabset with label facet:
<div class="myTab yui-navset yui-navset-top">
<ul class="yui-nav" role="tablist">
<li class="selected" title="active" role="presentation">
<div class="yui-navdiv" tabindex="0" id="yui-gen3" role="tab">
<em>
Tab is using
<a style="visibility: hidden;"></a>
</em>
</div>
</li>
<li role="presentation">
<div class="yui-navdiv" tabindex="-1" id="yui-gen4" role="tab">
<em>
Disabled tab
<a style="visibility: hidden;"></a>
</em>
</div>
</li>
</ul>
<div class="yui-content">
<div id="j_idt8:j_idt20" class="" role="tabpanel" labelledby="yui-gen3">
test contents
</div>
<div id="j_idt8:j_idt23" class="yui-hidden iceOutConStatActv" role="tabpanel" labelledby="yui-gen4">
</div>
</div>
</div>
Modified: D:\work\development\head\svn\ossrepo\icefaces\scratchpads\sparkle\component\resources\org.icefaces.component.util\util.js
Modified: D:\work\development\head\svn\ossrepo\icefaces\scratchpads\sparkle\component\src\org\icefaces\component\tab\TabMeta.java
Modified: D:\work\development\head\svn\ossrepo\icefaces\scratchpads\sparkle\component\src\org\icefaces\component\tab\TabSetRenderer.java
Sending content: D:\work\development\head\svn\ossrepo\icefaces\scratchpads\sparkle\component\src\org\icefaces\component\tab\TabSetRenderer.java
Sending content: D:\work\development\head\svn\ossrepo\icefaces\scratchpads\sparkle\component\src\org\icefaces\component\tab\TabMeta.java
Sending content: D:\work\development\head\svn\ossrepo\icefaces\scratchpads\sparkle\component\resources\org.icefaces.component.util\util.js
Completed: At revision: 21056