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<ul id="menu">
<li><a href="...">Main Nav Level #1 Item #1</a>
<div class="dropdown">
<ul>
<li class="headline"><a href="...">Level #2 Item #1</a></li>
<!-- following items are read from the database table of a simple module -->
<li><a href="..."><span class="subline">17.03.2015</span><br />DB Item #1</a></li>
<li><a href="..."><span class="subline">17.03.2015</span><br />DB Item #....</a></li>
<li><a href="..."><span class="subline">17.03.2015</span><br />DB Item #5</a></li>
</ul>
<ul>
<li class="headline"><a href="...">Level #2 Item #2</a></li>
<!-- following items are read from the database table of a simple module -->
<li><a href="..."><span class="subline">04.04.2015 / Hilfeleistungseinsatz</span><br />DB Item #1</a></li>
<li><a href="..."><span class="subline">04.04.2015 / Hilfeleistungseinsatz</span><br />DB Item #...</a></li>
<li><a href="..."><span class="subline">04.04.2015 / Hilfeleistungseinsatz</span><br />DB Item #5</a></li>
</ul>
<ul>
<li class="headline"><a href="...">Level #2 Item #3</a></li>
<!-- following items are read from the database table of a simple module -->
<li><a><span class="subline">09.04.2015 / 19:30:00 Uhr</span><br />DB Item #1</a></li>
<li><a><span class="subline">09.04.2015 / 19:30:00 Uhr</span><br />DB Item #...</a></li>
<li><a><span class="subline">09.04.2015 / 19:30:00 Uhr</span><br />DB Item #5</a></li>
</ul>
<ul>
<li class="headline"><a href="...">Level #2 Item #4</a></li>
<!-- following items are read from the database table of a simple module -->
<li><a href="..." class="fancybox-gallery" rel="gallery_presse_menue"><span class="subline">30.03.2015 / Frankfurter Neue Presse</span><br />DB Item #1</a></li>
<li><a href="..." class="fancybox-gallery" rel="gallery_presse_menue"><span class="subline">30.03.2015 / Frankfurter Neue Presse</span><br />DB Item #...</a></li>
<li><a href="..." class="fancybox-gallery" rel="gallery_presse_menue"><span class="subline">30.03.2015 / Frankfurter Neue Presse</span><br />DB Item #5</a></li>
</ul>
</div>
</li>
<li><a href="...">Main Nav Level #1 Item #2</a>
<div class="dropdown">
<ul>
<li class="headline"><a href="...">Level #2 Item #1</a></li>
<li><a href="...">Level #3 Item #1</a></li>
<li><a href="...">Level #3 Item #2</a></li>
</ul>
<ul>
<li class="headline"><a href="...">Level #2 Item #2</a></li>
<li><a href="...">Level #3 Item #1</a></li>
<li><a href="...">Level #3 Item #2</a></li>
</ul>
<ul>
<li class="headline"><a href="...">Level #2 Item #3</a></li>
<li><a href="...">Level #3 Item #1</a></li>
<li><a href="...">Level #3 Item #2</a></li>
</ul>
<ul>
<li class="headline"><a href="...">Level #2 Item #4</a></li>
<li><a href="...">Level #3 Item #1</a></li>
<li><a href="...">Level #3 Item #2</a></li>
</ul>
</div>
</li>
<li><a href="...">Main Nav Level #1 Item #3</a>
</li>
</ul>
Comments
<span class="subline">17.03.2015</span><br />DB Item #1
For the "class="headline" on the li, you can use the "styles" parameter for the fuel_nav function. This can be an array syntax that matches the nesting of your menu. For example, $styles[0][0] would reference the level 2 item 1 (0 indexed array).
$styles[0][0] = 'headline'; echo fuel_nav(array('styles' => $styles));
For dynamically generated menu items, you would need to use something like the "append" parameter for fuel_nav to insert extra menu items not found by default from the _variables/nav.php file.
All the above would be parameters for the fuel_nav function. However, menu link attributes are controlled on a per menu item basis. So adding these classes:
class="fancybox-gallery" rel="gallery_presse_menue"
Would mean they would need to be added to the nav array as the attributes parameter:
$nav['level2/item4'] = array('label' => 'Level #2 Item #4', 'attributes' => 'class="fancybox-gallery" rel="gallery_presse_menue"', 'parent_id' => 'level2');
Here are some potentially helpful documentation and forum links:
http://docs.getfuelcms.com/libraries/fuel_navigation#func_render
http://docs.getfuelcms.com/general/navigation
http://docs.getfuelcms.com/libraries/menu
http://forum.getfuelcms.com/discussion/comment/7261#Comment_7261
for selecting the dynamic menue items I should also use the pre_process function I think. correct? So I can keep the layout files clean of php code.