Adding Navigation Links

I wanted to add a navigation bar. Where the links go to a different section with in the same page.

The only time i wanted a new page to load and open was all the link to the NASA website for more information.

So i noticed i could add an anchor in any place with in the HTML document, and this create a Href link with a # that stays on the same page but change the centered documents. Using the the code below to create different section for the planets that can be navigated too.

<a name="Section name"></a>

<div class="Navi"> <a href="#Section name">name</a> </div>