WordPress.org

Ok so I have 2 different menus running in one page and I would like for the current page highlight image I coded into css to work here. I tried codex but cannot seem to have the correct instructions for wp_nav_menu. Can you specify which code should be added to this so it can highlight the current page people are looking at?

\\\the page.php code///
<div id="menu">

<h4>How To</h4>
<?php wp_nav_menu( array('menu' => 'How To' )); ?>
<h4>Tools & Resources</h4>
<?php wp_nav_menu( array('menu' => 'Tools and Resources' )); ?>

\\\the page.php code///

\\\the css//

#menu ul li a:hover {
background:url(img/light_blue.png) repeat-x;
text-shadow:#fff 1px 1px 1px;

}

#menu ul li .current {
background:url(img/light_blue.png) repeat-x;
text-shadow:#fff 1px 1px 1px;
}

\\\the css///

http://websitemakingtutorial.com/ = The site I am working on.

For the current menu, the class "current-menu-item" will be added to