diff -r 139737335c8a -r 5d392dea4f49 client/app/annotationclient.html
--- a/client/app/annotationclient.html	Fri Oct 17 13:52:24 2014 +0200
+++ b/client/app/annotationclient.html	Fri Oct 17 15:55:51 2014 +0200
@@ -33,7 +33,7 @@
               </div>
           </div>
         </div>
-        <div class="mons-button hand send" id="sendButton" ng-click="sendAnnotation(yourchoice)" ng-class="{'success-border':sendBtnSuccess}">
+        <div class="mons-button hand send" id="sendButton" ng-click="sendAnnotation(yourchoice)" ng-class="{'success-border':sendBtnSuccess, 'error-border':sendBtnError}">
           <div class="content">
               <div class="table">
                 <div class="table-cell">
@@ -47,7 +47,7 @@
     <div class="mons-content">
       <div ng-show="!selectedlevel">
           <div class="mons-button hand" ng-repeat="c in data.categories" style="background-color: {{ '{{' }} c.color {{ '}}' }}"
-                                        ng-click="selectLevel(c.label, c.code, c)" ng-class="{'success-border':c.sendSuccess}">
+                                        ng-click="selectLevel(c.label, c.code, c)" ng-class="{'success-border':c.sendSuccess, 'error-border':c.sendError}">
             <div class="content">
                 <div class="table">
                   <div class="table-cell">
@@ -60,7 +60,7 @@
       </div>
       <div ng-show="selectedlevel">
           <div class="mons-button hand" ng-repeat="c in selectedlevel" style="background-color: {{ '{{' }} c.color {{ '}}' }}"
-                                        ng-click="sendAnnotation(c.label, c.code, c)" ng-class="{'success-border':c.sendSuccess}">
+                                        ng-click="sendAnnotation(c.label, c.code, c)" ng-class="{'success-border':c.sendSuccess, 'error-border':c.sendError}">
             <div class="content">
                 <div class="table">
                   <div class="table-cell">