wrong menus are displaying

I created two menus
but when I call the main menu I get the other one.
I am using this in the header.php to call the main menu
<?php wp_nav_menu( array( 'top_nav' => 'topNav' ) ); ?>
but get the menu for engineering
and I use this
wp_nav_menu( array( 'eng_nav' => 'engNav', 'container_class' => 'container' ) ); in an entirely diff page but this one is showing up as the top menu in the main page (thebigmeow.us)
so far the menu that works is the one that has the original html next to the search box.