diff --git a/js/imgGallery.js b/js/imgGallery.js
index 711afaf..a17eae3 100644
--- a/js/imgGallery.js
+++ b/js/imgGallery.js
@@ -13,6 +13,9 @@ directionDetermined = false;
 touchDragStartX = null;
 touchDirection = null;
 
+// changes to style.rotate are necessary because transformed elements
+// get stuck in front of the gallery images
+
 function enlargeImage (filename) {
   viewState = photos.indexOf(filename);
   galleryImage.fullRes = filename;