Ben Huson

<h4>Add missing classes</h4>
Adds missing classes for selected menu states. Classes added include:
<ul>
<li><code>current-page-parent</code> and <code>current_page_parent</code></li>
<li><code>current-page-ancestor</code> and <code>current_page_ancestor</code></li>
<li><code>current-menu-ancestor</code></li>
<li><code>current-menu-parent</code></li>
</ul>
The classes are added in the following scenarios:
<ul>
<li>When viewing an attachment page classes are added to any parent pages and their menu ancestors.</li>
<li>When viewing a post classes are added to any relevant taxonomy menu items and their manu ancestors.</li>
</ul>
<h4>Manage Menu Select States</h4>
Allows you to control which menu items should be selected (or deselected) when viewing certain pages of your site. You need to add classes to the menu items for this to work.
<ul>
<li><code>ecms-archive-{$post_type}</code> – Select menu item when viewing a post type archive page.</li>
<li><code>ecms-single-{$post_type}</code> – Select menu item when viewing a single post type page.</li>
<li><code>ecms-taxonomy-{$taxonomy}</code> – Select menu item when viewing a taxonomy archive.</li>
<li><code>ecms-taxonomy-{$taxonomy}-term-{$term}</code> – Select menu item when viewing a taxonomy term archive.</li>
<li>
<code>ecms-404</code> – Select menu item when viewing a 404 page.
</li>
<li>
<code>ecms-no-archive-{$post_type}</code> – Deselect menu item when viewing a post type archive page.
</li>
<li><code>ecms-no-single-{$post_type}</code> – Deselect menu item when viewing a single post type page.</li>
<li><code>ecms-no-taxonomy-{$taxonomy}</code> – Deselect menu item when viewing a taxonomy archive.</li>
<li><code>ecms-no-taxonomy-{$taxonomy}-term-{$term}</code> – Deselect menu item when viewing a taxonomy term archive.</li>
<li><code>ecms-no-404</code> – Deselect menu item when viewing a 404 page.</li>
</ul>

Extra Classes

Adds classes for selected menu states such as highlighting categories when viewing a blog post or parent page when viewing an attachment page.

Aiken1

Simple plugin that adds extra functionality to menu items. The plugin will allow to set predefined CSS classes (Select field) to menu items. 
Support for the plugin “If Menu”: https://wordpress.org/plugins/if-menu/ – does not break the “If Menu” plugin.
Example of defining CSS classes for menu items is in the “FAQ” tab here.
Custom Menu Class is 100% free. if you have questions or need additional information u can comment on my website ( http://deving.de – http://deving.de/blog/wordpress/2292-wordpress-plugin-fuer-voreingestellte-css-klassen-fuer-menue-links/ ) or in the “Support” tab here.
Check out my <a href="http://themeforest.net/user/Aiken1/portfolio?ref=Aiken1" title="Themeforest" rel="nofollow ugc">Themeforest Account</a>

Extra Classes vs Custom Menu Class