diff --git a/index.php b/index.php
index 66c7a63..f65683e 100644
--- a/index.php
+++ b/index.php
@@ -30,7 +30,17 @@
             <h2>Folders</h2>
         </div>
         <div class="card-body">
-            <p>Select a catagory to start browsing</p>
+            <?php
+                if(!$isDir){
+                    echo <<< errorblock
+                        <h2><b>THERE ARE NO TRACKED DIRECTORIES, 
+                            OR THERE IS AN ERROR IN YOU CONFIGURATION. 
+                            PLEASE CHECK 'var/config'</b></h2>
+                    errorblock;
+                    exit();
+                }
+            ?>
+            <p>Select a category to start browsing</p>
             <table id="catTable" class="display table text-white">
                 <thead>
                     <tr>
diff --git a/var/config.php b/var/config.php
index cac6aa4..f25ca35 100644
--- a/var/config.php
+++ b/var/config.php
@@ -14,11 +14,20 @@
      * These can start with "#" to direct to a tag on the page, could be an internal
      * link by using "/listing.php?folder=SomeFolder", or could be an external site
      *
+     * $nav_rname and $nav_rlink are for a link on the right side of the nav bar.
+     * This link is by default an ad for this repo, however you can disable it by
+     * setting $isrNav to false, or change it to advertise anything you choose!
+     *
+     * The navbar can be disabled by changing isNav to false
+     *
      * These associate in order ie the Tag $nav_names[3] will direct the user to
      * the link in $nav_links[3]
      *
      */
 
+    $isNav = true;
+    $isrNav = true;
+
     $nav_names = array(
         'Home',
         'Github',
@@ -29,6 +38,10 @@
         'https://github.com/Clortox',
     );
 
+    //$nav_rname = 'Git this site!';
+    //$nav_rlink = 'https://github.com/Clortox/SimpleFileRepository';
+
+
     /* Directory Variables
      * 
      * Each variable in $dir_dirs will be a listing
@@ -43,6 +56,8 @@
      * the title $dir_names[3]
      */
 
+    $isDir = true;
+
     $dir_names = array(
         'Printable Guns',
         'GNU Software',
@@ -85,4 +100,20 @@
         ' is asking for help with their homework from ',
     );
 
+    //Be safe, check arrays
+    if(empty($nav_names) or empty($nav_links)){
+        $isNav = false;
+    } else if(count($nav_names) !== count($nav_links)){
+        $isNav = false;
+    }
+
+    if(empty($dir_names) or empty($dir_dirs)){
+        $isDir = false;
+    } else if (count($dir_names) !== count($dir_dirs)){
+        $isDir = false;
+    }
+
+    if(empty($convo)){
+        $isConvo = false;
+    }
 ?>
diff --git a/www/header.php b/www/header.php
index 03e715b..a92ad80 100644
--- a/www/header.php
+++ b/www/header.php
@@ -12,17 +12,18 @@
             $saying = $convo[rand(0,count($convo)-1)];
             echo '<p>' . $clientip . $saying . $serverip . '</p>';
         }
+        
+        if($isNav){
+            echo '<nav class="navbar navbar-expand-lg 
+                navbar-dark border border-secondary">';
+                    foreach($nav_names as $index=>$name){
+                        echo '<a class="navbar-brand" href="' . $nav_links[$index] . '">'
+                            . $name . '</a>';
+                    }
+            echo '</nav>';
+        }
     ?>
 
-        <nav class="navbar navbar-expand-lg navbar-dark border border-secondary">
-            <?php
-                foreach($nav_names as $index=>$name){
-                    echo '<a class="navbar-brand" href="' . $nav_links[$index] . '">'
-                        . $name . '</a>';
-                }
-            ?>
-        </nav>
-
 
     </div>
 </header>