All links in the trail now are active, not only the bottom one

template.php

@@ -231,20 +231,31 @@ function valencia_links__system_main_menu($vars) {
  * Follows http://design.ubuntu.com/web-style-guide/scaffolding#navigation
  */
 function valencia_header_menu($vars) {
-	// Var with all HTML of the menu
-	$html = '<ul>';
+    // Var with all HTML of the menu
+    $html = '<ul>';
 
-	foreach ($vars['links'] as $key => $link) {
-		// To print every menu voice only one, see Drupal API
-		if (is_numeric($key)) {
-			$link_title = $link['#title'];
-			$link_href = $link['#href'];
-			$html .= '<li>' . l($link_title, $link_href, array('html' => 'true')) . '</li>';
-		}
-	}
+    foreach ($vars['links'] as $key => $link) {
+        // To print every menu voice only one, see Drupal API
+        if (is_numeric($key)) {
+            $link_title = $link['#title'];
+            $link_href = $link['#href'];
+
+            if ($link['#original_link']['in_active_trail']) {
+                $html .= '<li>' . l($link_title, $link_href, array(
+                    'html' => 'true',
+                    'attributes' => array(
+                        'class' => array(
+                            'active'
+                    )))) . '</li>';
+            }
+            else {
+                $html .= '<li>' . l($link_title, $link_href, array('html' => 'true')) . '</li>';
+            }
+        }
+    }
 
-	$html .= '</ul>';
-	return $html;
+    $html .= '</ul>';
+    return $html;
 }
 
 /**