Hey everybody, currently I am in the process of designing a theme for a client based on Zurb Foundation ,
I am totally a beginner, After two days of research I have created a Mega Menu base on zurb doc
http://foundation.zurb.com/docs/navigation.php

Though of Sharing, Maybe someone need a similar one, I know there are modules for Mega Menu, i hadn't used just because I wanted the menu
to match with the Zurb Foundation way.

The code I have added to template.php is as following :

function themename_menu_link(array $variables) {
// Remove Drupal attributes
  unset($variables['element']['#attributes']['class']);
 
  $element = $variables['element'];
  $sub_menu = '';
  $subsub_menu = '';

if ($element['#below']) {
    // Ad our own wrapper
    unset($element['#below']['#theme_wrappers']);
     if($element['#original_link']['depth'] == 1) {
    $sub_menu = '<div class="flyout large"><div class="row"><div class="twelve columns">' . drupal_render($element['#below']) . '</div></div></div>';
   }
  
   // Check if this element is nested within another
   if ((!empty($element['#original_link']['depth'])) && ($element['#original_link']['depth'] > 1)) {
   $subsub_menu = '<ol class="square">' . drupal_render($element['#below']) . '</ol>';
    }
   else {
      // Generate as standard dropdown
     $element['#attributes']['class'][] = 'has-flyout';
     $element['#localized_options']['html'] = TRUE;
     $element['#title'] .= '<a href="#" class="flyout-toggle"><span> </span></a>';
   }
}

$output = l($element['#title'] , $element['#href'], $element['#localized_options']);

if($element['#original_link']['depth'] == 2) {
return '<div class="six columns"><h6 class="subheader"' . drupal_attributes($element['#attributes']) . '>' . $element['#title'] . $sub_menu . '</h6>' . $subsub_menu .'</div>' ;
}

else {

    return '<li ' . drupal_attributes($element['#attributes']) . '>' . $output . $sub_menu . "</li>\n";
}

}

Then I wrap it into
<ul class="nav-bar"></ul>

This will generate a mega menu , first nested element will act as headers , second will be list of links

nobody click here