JSF统一导航系统（菜单，面包屑，站点地图）

We're using MyFaces, Richfaces & Restfaces to build a website on top of Oracle Stellant CMS. We're not using Site Studio. Are there any widgets/combination of widgets out there that could provide a unified navigation system? The site structure needs to be read from a DB table and CMS metadata fields, and we need a top tab menu, an expandable sidebar menu, breadcrumbs, and a sitemap (bonus points if it uses the sitemaps.org standard). We're currently using a combination of autonomous hand-rolled and off-the shelf widgets that aren't interoperating very well - the different navigation features aren't staying in sync as the site is navigated.We're using MyFaces, Richfaces & Restfaces to b