1 files changed, 9 insertions, 7 deletions

diff --git a/hesla.js b/hesla.js
index 5e6d3b4..af1802f 100644
--- a/hesla.js
+++ b/hesla.js
@@ -1,3 +1,5 @@
+"use strict";
+
 if (!Date.prototype.toISODateString) {
 
   (function() {
@@ -20,17 +22,18 @@ if (!Date.prototype.toISODateString) {
 
 (function () {
   function Page() {
+    var that = this;
     this.cur_date = null;
     document.getElementById("czech_nav").addEventListener("click",
         function(evt) {
           localStorage.language = "cs";
-          lang_reload();
+          that.lang_reload();
         }, false);
 
     document.getElementById("german_nav").addEventListener("click",
         function(evt) {
           localStorage.language = "de";
-          lang_reload();
+          that.lang_reload();
         }, false);
 
   }
@@ -38,7 +41,7 @@ if (!Date.prototype.toISODateString) {
   // Display cur_date losungen
   Page.prototype.display = function display(new_date) {
     if (this.cur_date !== null) {
-      document.getElementById(cur_date.toISODateString()).style.display = 'none';
+      document.getElementById(this.cur_date.toISODateString()).style.display = 'none';
     }
 
     if (new_date === undefined) {
@@ -64,14 +67,13 @@ if (!Date.prototype.toISODateString) {
 
   // Switch langauge
   Page.prototype.lang_reload = function lang_reload() {
-    var new_basename = "index.html";
-    var new_url = "NOURL";
+    var new_basename = "index.html", new_url = "NOURL",
+      old_basename = window.location.pathname.split("/").slice(-1);
+
     if (localStorage.language && (localStorage.language === "de")) {
         new_basename = "index_de.html";
     }
 
-    var old_basename = window.location.pathname.split("/").slice(-1);
-
     if ((old_basename !== new_basename) || (window.location.pathname.length === 0)) {
       new_url = window.location.href.replace(/(index[a-zA-Z-_]*\.html)?$/,
     new_basename);