diff --git a/adduser.php b/adduser.php
index ebc4632..1ccad89 100644
--- a/adduser.php
+++ b/adduser.php
@@ -57,7 +57,7 @@
     }
     $query->store_result();
     if ($query->num_rows) {
-      exitWithStatus(true, "User exists");
+      exitWithStatus(true, $lang_userexists);
     }
     $query->free_result();
     $query->close();
diff --git a/admin.js b/admin.js
index 3bc693f..b118c38 100644
--- a/admin.js
+++ b/admin.js
@@ -32,10 +32,10 @@ function removeModal() {
 
 function addUser() {
   var form = '<form id="userForm" method="post" onsubmit="submitUser(); return false">';
-  form += '<label><b>User name</b></label><input type="text" placeholder="Enter user login" name="login" required>';
-  form += '<label><b>Password</b></label><input type="password" placeholder="Enter Password" name="pass" required>';
-  form += '<label><b>Repeat password</b></label><input type="password" placeholder="Enter Password" name="pass2" required>';
-  form += '<button type="button" onclick="removeModal()">Cancel</button><button type="submit">Submit</button>';
+  form += '<label><b>' + lang_username + '</b></label><input type="text" placeholder="' + lang_usernameenter + '" name="login" required>';
+  form += '<label><b>' + lang_password + '</b></label><input type="password" placeholder="' + lang_passwordenter + '" name="pass" required>';
+  form += '<label><b>' + lang_passwordrepeat + '</b></label><input type="password" placeholder="' + lang_passwordenter + '" name="pass2" required>';
+  form += '<button type="button" onclick="removeModal()">' + lang_cancel + '</button><button type="submit">' + lang_submit + '</button>';
   form += '</form>';
   showModal(form);
 }
diff --git a/index.php b/index.php
index 0bce681..ddc1237 100755
--- a/index.php
+++ b/index.php
@@ -164,6 +164,13 @@ print
       var lang_latest = "'.$lang_latest.'";
       var lang_track = "'.$lang_track.'";
       var lang_newinterval = "'.$lang_newinterval.'";
+      var lang_username = "'.$lang_username.'";
+      var lang_password = "'.$lang_password.'";
+      var lang_passwordrepeat = "'.$lang_passwordrepeat.'";
+      var lang_passwordenter = "'.$lang_passwordenter.'";
+      var lang_usernameenter = "'.$lang_usernameenter.'";
+      var lang_cancel = "'.$lang_cancel.'";
+      var lang_submit = "'.$lang_submit.'";
       var units = "'.$units.'";
       var mapapi = "'.$mapapi.'";
       var gkey = '.(isset($gkey)?'"'.$gkey.'"':'null').';
diff --git a/lang.php b/lang.php
index bad5d89..90670c7 100755
--- a/lang.php
+++ b/lang.php
@@ -54,8 +54,13 @@ switch($lang) {
     $lang_metric = "Metric";
     $lang_imperial = "Imperial/US";
     $lang_adminmenu = "Administration";
+    $lang_passwordrepeat = "Repeat password";
+    $lang_passwordenter = "Enter password";
+    $lang_usernameenter = "Enter username";
     $lang_adduser = "Add user";
     $lang_userexists = "User exists";
+    $lang_cancel ="Cancel";
+    $lang_submit = "Submit";
     break;
 
   case "pl":
@@ -93,8 +98,13 @@ switch($lang) {
     $lang_metric = "Metryczne";
     $lang_imperial = "Anglosaskie";
     $lang_adminmenu = "Administracja";
+    $lang_passwordrepeat = "Powtórz hasło";
+    $lang_passwordenter = "Podaj hasło";
+    $lang_usernameenter = "Podaj użytkownika";
     $lang_adduser = "Dodaj użytkownika";
     $lang_userexists = "Użytkownik istnieje";
+    $lang_cancel ="Anuluj";
+    $lang_submit = "Zatwierdź";
     break;
 
     case "de":
@@ -132,10 +142,13 @@ switch($lang) {
     $lang_metric = "Metrisches";
     $lang_imperial = "Angloamerikanisches";
     $lang_adminmenu = "Verwaltung";
-
-    // todo: translate
-    $lang_adduser = "Add user";
-    $lang_userexists = "User exists";
+    $lang_passwordrepeat = "Repeat password"; // todo: translate
+    $lang_passwordenter = "Enter password"; // todo: translate
+    $lang_usernameenter = "Enter username"; // todo: translate
+    $lang_adduser = "Add user"; // todo: translate
+    $lang_userexists = "User exists"; // todo: translate
+    $lang_cancel ="Cancel"; // todo: translate
+    $lang_submit = "Submit"; // todo: translate
     break;
 
   case "hu":
@@ -173,9 +186,13 @@ switch($lang) {
     $lang_metric = "Metrikus";
     $lang_imperial = "Imperal/US";
     $lang_adminmenu = "Adminisztráció";
-    // todo: translate
-    $lang_adduser = "Add user"; 
-    $lang_userexists = "User exists";
+    $lang_passwordrepeat = "Repeat password"; // todo: translate
+    $lang_passwordenter = "Enter password"; // todo: translate
+    $lang_usernameenter = "Enter username"; // todo: translate
+    $lang_adduser = "Add user"; // todo: translate
+    $lang_userexists = "User exists"; // todo: translate
+    $lang_cancel ="Cancel"; // todo: translate
+    $lang_submit = "Submit"; // todo: translate
     break;
 }
 ?>