diff --git a/src/main/webapp/dynamic.html b/src/main/webapp/dynamic.html
index ef52960..55e5fb3 100644
--- a/src/main/webapp/dynamic.html
+++ b/src/main/webapp/dynamic.html
@@ -180,7 +180,7 @@ $(function() {
 
 
 	  var selectedImg = window.location.search;
-  var selectedPos;
+  var selectedPos = undefined;
   if (/^\?focus=/.test(selectedImg)) {
     selectedImg = selectedImg.substring('?focus='.length);
     $("a.ss").each(function(index) {
@@ -191,7 +191,7 @@ $(function() {
   }
  
  
-    if (selectedPos) {
+    if (selectedPos !== undefined) {
         $(gallery[selectedPos]).trigger('click');
     }
   });