link classes

I am working on making a theme into a wordpress theme for my professional photographer website and one issue i ran into is that the current html design of the theme uses anchor link classes like here:

orangestonephotography.com
orangestonephotography.com/test/new/entry.html

<li><a href="blog.html">Blog</a></li>
<li><a>class="navEffect" href="portfolio.html">Portfolio</a></li>
<li><a>class="navEffect" href="about.html">About Us</a> </li>

but instead it is working like this:

<li class="page_item page-item-19 current_page_item"><a href="http://www.adivix.com" title=""></a>
<li class="page_item page-item-23"><a href="http://www.adivix.com/blog/" title="Blog">Blog</a>

<li class="page_item page-item-2"><a href="http://www.adivix.com/about/" title="About Us">About Us</a>

here is the current working theme site:

adivix.com

so i need to be able to set in header.php if index then it uses the home link class then if it is the current page it uses the current link class and other pages uses the navEffect link class.

How can I set this up properly? Please advise!