<script type="text/javascript">
dojo.require("dojo.widget.TabContainer");
dojo.require("dojo.widget.LinkPane");
dojo.require("dojo.widget.ContentPane");
dojo.require("dojo.io.cookie");
dojo.addOnLoad(function(){
    var tabContainer=dojo.widget.byId("foo");
    dojo.event.connect(tabContainer,"selectChild",function(evt){
        dojo.io.cookie.setCookie("Struts2TabbedPanel_selectedTab_foo",evt.widgetId,1,null,null,null);
        }
    )
});
</script>
<div dojoType="TabContainer" id="foo" selectedTab="bar" doLayout="false">
</div>