diff --git a/cas_server/static/cas_server/cas.js b/cas_server/static/cas_server/cas.js
index 4c42dde..06e1a5d 100644
--- a/cas_server/static/cas_server/cas.js
+++ b/cas_server/static/cas_server/cas.js
@@ -1,55 +1,52 @@
 function cas_login(cas_server_login, service, login_service, callback){
-  url = cas_server_login + '?service=' + encodeURIComponent(service);
+  var url = cas_server_login + "?service=" + encodeURIComponent(service);
   $.ajax({
-    type: 'GET',
-    url:url,
-    beforeSend: function (request) {   
+    type: "GET",
+    url,
+    beforeSend(request) {
       request.setRequestHeader("X-AJAX", "1");
     },
     xhrFields: {
       withCredentials: true
     },
-    success: function(data, textStatus, request){
-      if(data.status == 'success'){
+    success(data, textStatus, request){
+      if(data.status === "success"){
         $.ajax({
-          type: 'GET',
+          type: "GET",
           url: data.url,
           xhrFields: {
             withCredentials: true
           },
           success: callback,
-          error: function (request, textStatus, errorThrown) {},
+          error(request, textStatus, errorThrown) {},
         });
       } else {
-        if(data.detail == "login required"){
-          window.location.href = cas_server_login + '?service=' + encodeURIComponent(login_service);
+        if(data.detail === "login required"){
+          window.location.href = cas_server_login + "?service=" + encodeURIComponent(login_service);
         } else {
-          alert('error: ' + data.messages[1].message);
+          alert("error: " + data.messages[1].message);
         }
       }
     },
-    error: function (request, textStatus, errorThrown) {},
+    error(request, textStatus, errorThrown) {},
   });
 }
 
 function cas_logout(cas_server_logout){
   $.ajax({
-    type: 'GET',
-    url:cas_server_logout,
-    beforeSend: function (request) {   
+    type: "GET",
+    url: cas_server_logout,
+    beforeSend(request) {
       request.setRequestHeader("X-AJAX", "1");
     },
     xhrFields: {
       withCredentials: true
     },
-    error: function (request, textStatus, errorThrown) {},
-    success: function(data, textStatus, request){
-      if(data.status == 'error'){
-        alert('error: ' + data.messages[1].message);
+    error(request, textStatus, errorThrown) {},
+    success(data, textStatus, request){
+      if(data.status === "error"){
+        alert("error: " + data.messages[1].message);
       }
     },
   });
 }
-    
-
-