diff --git a/frontend/bower.json b/frontend/bower.json
index d6cfe44..8bd94ce 100644
--- a/frontend/bower.json
+++ b/frontend/bower.json
@@ -57,6 +57,7 @@
     "iron-collapse": "^1.2.1",
     "paper-spinner": "^1.0.0",
     "iron-resizable-behavior": "^1.0.4",
-    "paper-checkbox": "^1.2.0"
+    "paper-checkbox": "^1.2.0",
+    "webcomponentsjs": "^v1.1.0"
   }
 }
diff --git a/frontend/src/ketr-photos/ketr-photos.html b/frontend/src/ketr-photos/ketr-photos.html
index 847eab2..7d75f3f 100755
--- a/frontend/src/ketr-photos/ketr-photos.html
+++ b/frontend/src/ketr-photos/ketr-photos.html
@@ -302,15 +302,6 @@
         },
 
 
-        isThumbInView: function(el) {
-          var rect = el.getBoundingClientRect(),
-            height = (window.innerHeight || document.documentElement.clientHeight),
-            width = (window.innerWidth || document.documentElement.clientWidth);
-
-          return ((rect.top <= height) && ((rect.top + rect.height) >= 0) &&
-              (rect.left <= width) && ((rect.left + rect.width) >= 0));
-        },
-
         onScroll: function(event) {
           if (this.disableScrolling) {
             event.preventDefault();