diff --git a/assets/js/app.js b/assets/js/v1_app.js
similarity index 99%
rename from assets/js/app.js
rename to assets/js/v1_app.js
index 2d54cc5..39ca807 100644
--- a/assets/js/app.js
+++ b/assets/js/v1_app.js
@@ -439,7 +439,7 @@ function galleryControl(e,f,g,h) {
 }
 
 function loopControl(e,f,g) {
-  if(f){if(g+1==e+1){e=1;}else{e=e+1;}}else{if(0==e-1){e=g;}else{e=e-1;}}return e;
+  if(f){if(0==e-1){e=g;}else{e=e-1;}}else{if(g+1==e+1){e=1;}else{e=e+1;}}return e;
 }
 
 function menuControl(e,f) {
diff --git a/index.html b/index.html
index 0171fa6..44376fb 100644
--- a/index.html
+++ b/index.html
@@ -647,6 +647,6 @@
     </div>
 	</footer>
 
-	<script src="assets/js/app.js"></script>
+	<script src="assets/js/v1_app.js"></script>
 </body>
 </html>