Current Menu Highlight?

I have a custom menu made with div’s

<div id="nav">
      <div id="navigation">
         <a href="<?php echo get_option('home'); ?>">
            MENU ITEM 1
         </a>
      </div>
      <div id="navigation">
         <a href="#">
            MENU ITEM 2
         </a>
      </div>
      <div id="navigation">
         <a href="#">
            MENU ITEM 3
         </a>
      </div>
      <div id="navigation">
         <a href="#">
            MENU ITEM 4
         </a>
      </div>
   </div>

It works fine, however, when i click on different menu items and the page loads, the current menu item is not highlighted based on which page the user is on.

Anyway to add current menu item in this custom menu please?