hide interactive part on error

login.html

@@ -17,6 +17,7 @@
         <h3>State</h3>
         The process should also return the state provided.
         <pre class="code" id="state-param"></pre>
+        <div id="oncode">
             <h2>Code</h2>
             <p>The code is generated by the Authentication server and send back
                 to the client via the resource's owner user-agent</p>
@@ -54,13 +55,14 @@
             <p>This is why the client must require a new access token using its
                 <em>refresh token</em>.
                 That is just making another call to <code>/token</code>
-            But with different parameters.
+                But with different parameters. </p>
             <div class="button"
                  onclick="getAccessToken();">
                 Get Access Tokens from Refresh Token
             </div>
             <pre id="refreshed" class="code">Nothing yet.</pre>
             <pre id="refreshed-access-token" class="code">Nothing yet.</pre>
+        </div>
         <script>
          function getJsonFromUrl() {
              var query = location.search.substr(1);
@@ -76,6 +78,7 @@
          if (params.error) {
              authstatus = "REFUSED: " + params.error;
              $('#authorization_status').addClass('refused');
+            $('#oncode').hide();
          } else {
              authstatus = "AUTHORIZED" ;
              $('#authorization_status').addClass('authorized');