diff --git fancybox.module fancybox.module
index cf1dca1..331ae14 100644
--- fancybox.module
+++ fancybox.module
@@ -38,7 +38,14 @@ function fancybox_activate($settings = NULL) {
   
     drupal_add_css($path .  $files['css']);
     drupal_add_js($path . $files['js']);
-
+    
+    // Unset unused variables
+    foreach($settings['options'] as $key => $value) {
+      if (empty($value)) {
+        unset($settings['options'][$key]);
+      }
+    }
+    
     // Expose settings to the DOM.
     $exposed_settings['options'] = $settings['options'];
     $exposed_settings['selector'] = $settings['activation']['selector'];