It seems that you are adding in the navigation correctly. Do you have a link to the live site where this is occurring? I would like to check this out on the page that is giving you this result.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.