diff --git a/assets/javascripts/app.js b/assets/javascripts/app.js
index 725c407..15d6713 100644
--- a/assets/javascripts/app.js
+++ b/assets/javascripts/app.js
@@ -894,16 +894,17 @@ function transdate(){
         window.has_hover = true;
       }
     });
-
-  $('header #main-nav>li').hover(function(){
-    if (!calc_menu_flag){
-      calc_menu_pos();
-    }
-  });
-  $('header #main-nav>li>a').on('focus',function(){
-    if (!calc_menu_flag){
-      calc_menu_pos();
-    }
+  $(document).ready(function(){
+    $('header #main-nav>li').hover(function(){
+      if (!calc_menu_flag){
+        calc_menu_pos();
+      }
+    });
+    $('header #main-nav>li>a').on('focus',function(){
+      if (!calc_menu_flag){
+        calc_menu_pos();
+      }
+    });
   });
   $(window).load(function(){
     //calc_menu_pos();