Wordpress menu: How to make www.link.com/#name never contain current_page_item class?

Question

I am using the wordpress menus on a website, but the problem is that one of the links on that menu is www.homepage.com/#order

So, when I am on the homepage, both "home" and "order" links on the menu contain the class current_page_item, which with my css it makes them appear both as the active button.

How can I make it so the #order link never contains that the current_page_item class?

Here's a screenshot of how the menu looks when visiting the homepage and how I set it up on the admin panel:

http://img87.imageshack.us/img87/7666/screenshotrq.png

On the firebug panel you can see that both www.homepage.com and www.homepage.com/#order menu links contain the current_page_item class.

This is the php code I am using to display the menus:

<?php 
$args = array(
    'menu' => 'Top Menu',
     'sort_column' => 'menu_order',
     'container_class' => ' '
);
wp_nav_menu($args); 
?>

Answer 1

a bit hacky, but it works:

add_filter('nav_menu_css_class', 'remove_some_menu_classes', 420 ,3);
function remove_some_menu_classes($classes, $item, $args){
  if(strpos($item->url, '#order') !== false)
    // in the 2nd array put the classes you want removed
    return array_diff($classes, array('current_page_item', 'current-menu-item'));

  return $classes;
}