diff --git a/mindplot/src/main/javascript/DesignerKeyboard.js b/mindplot/src/main/javascript/DesignerKeyboard.js
index df992657..49ce9ca9 100644
--- a/mindplot/src/main/javascript/DesignerKeyboard.js
+++ b/mindplot/src/main/javascript/DesignerKeyboard.js
@@ -225,7 +225,7 @@ mindplot.DesignerKeyboard = new Class({
                 designer.selectAll();
             },
 
-            'right':function () {
+            'right':function (event) {
                 var node = model.selectedTopic();
                 if (node) {
                     if (node.getTopicType() == mindplot.model.INodeModel.CENTRAL_TOPIC_TYPE) {
@@ -243,9 +243,11 @@ mindplot.DesignerKeyboard = new Class({
                     var centralTopic = model.getCentralTopic();
                     this._goToNode(designer, centralTopic);
                 }
+                event.preventDefault();
+                event.stopPropagation();
             }.bind(this),
 
-            'left':function () {
+            'left':function (event) {
                 var node = model.selectedTopic();
                 if (node) {
                     if (node.getTopicType() == mindplot.model.INodeModel.CENTRAL_TOPIC_TYPE) {
@@ -263,9 +265,11 @@ mindplot.DesignerKeyboard = new Class({
                     var centralTopic = model.getCentralTopic();
                     this._goToNode(designer, centralTopic);
                 }
+                event.preventDefault();
+                event.stopPropagation();
             }.bind(this),
 
-            'up':function () {
+            'up':function (event) {
                 var node = model.selectedTopic();
                 if (node) {
                     if (node.getTopicType() != mindplot.model.INodeModel.CENTRAL_TOPIC_TYPE) {
@@ -275,9 +279,11 @@ mindplot.DesignerKeyboard = new Class({
                     var centralTopic = model.getCentralTopic();
                     this._goToNode(designer, centralTopic);
                 }
+                event.preventDefault();
+                event.stopPropagation();
             }.bind(this),
 
-            'down':function () {
+            'down':function (event) {
                 var node = model.selectedTopic();
                 if (node) {
                     if (node.getTopicType() != mindplot.model.INodeModel.CENTRAL_TOPIC_TYPE) {
@@ -287,6 +293,8 @@ mindplot.DesignerKeyboard = new Class({
                     var centralTopic = model.getCentralTopic();
                     this._goToNode(designer, centralTopic);
                 }
+                event.preventDefault();
+                event.stopPropagation();
             }.bind(this)
         };
         this.addEvents(keyboardEvents);