diff --git a/.babelrc b/.babelrc
index ebe44981..d3289f3a 100644
--- a/.babelrc
+++ b/.babelrc
@@ -2,6 +2,7 @@
   "presets": ["es2015"],
   "plugins": [
     "transform-es3-property-literals",
-    "transform-es3-member-expression-literals"
+    "transform-es3-member-expression-literals",
+    "transform-runtime"
   ]
 }
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 00000000..cb336928
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,5 @@
+language: node_js
+node_js: "6"
+before_script:
+  - npm install -g gulp
+script: gulp
\ No newline at end of file
diff --git a/lib/network/modules/InteractionHandler.js b/lib/network/modules/InteractionHandler.js
index 4d61d5a1..3f7a139d 100644
--- a/lib/network/modules/InteractionHandler.js
+++ b/lib/network/modules/InteractionHandler.js
@@ -694,7 +694,7 @@ class InteractionHandler {
         // we initially only check stillOnObj because this is much faster.
         if (stillOnObj === true) {
           let overNode = this.selectionHandler.getNodeAt(pointer);
-          stillOnObj = overNode.id === this.popup.popupTargetId;
+          stillOnObj = overNode === undefined ? false : overNode.id === this.popup.popupTargetId;
         }
       }
     }
diff --git a/lib/network/modules/SelectionHandler.js b/lib/network/modules/SelectionHandler.js
index 8c5eaf37..121a2e93 100644
--- a/lib/network/modules/SelectionHandler.js
+++ b/lib/network/modules/SelectionHandler.js
@@ -535,8 +535,8 @@ class SelectionHandler {
           delete this.hoverObj.edges[edgeId];
         }
         // if the blur remains the same and the object is undefined (mouse off) or another
-        // edge has been hovered, we blur the edge
-        else if (object === undefined || object instanceof Edge) {
+        // edge has been hovered, or another node has been hovered we blur the edge.
+        else if (object === undefined || (object instanceof Edge && object.id != edgeId) || (object instanceof Node && !object.hover)) {
           this.blurObject(this.hoverObj.edges[edgeId]);
           delete this.hoverObj.edges[edgeId];
           hoverChanged = true;
diff --git a/lib/timeline/component/TimeAxis.js b/lib/timeline/component/TimeAxis.js
index 30f1903b..f575af4b 100644
--- a/lib/timeline/component/TimeAxis.js
+++ b/lib/timeline/component/TimeAxis.js
@@ -364,14 +364,12 @@ TimeAxis.prototype._repaintMajorText = function (x, text, orientation, className
   if (!label) {
     // create label
     var content = document.createElement('div');
-    content.innerHTML = text;
     label = document.createElement('div');
     label.appendChild(content);
     this.dom.foreground.appendChild(label);
   }
-  this.dom.majorTexts.push(label);
 
-  label.childNodes[0].nodeValue = text;
+  label.childNodes[0].innerHTML = text;
   label.className = 'vis-text vis-major ' + className;
   //label.title = title; // TODO: this is a heavy operation
 
@@ -383,6 +381,7 @@ TimeAxis.prototype._repaintMajorText = function (x, text, orientation, className
     label.style.left = x + 'px';
   };
 
+  this.dom.majorTexts.push(label);
   return label;
 };
 
diff --git a/package.json b/package.json
index df792ba8..cbbce13b 100644
--- a/package.json
+++ b/package.json
@@ -29,6 +29,8 @@
     "watch-dev": "gulp watch --bundle"
   },
   "dependencies": {
+    "babel-polyfill": "^6.20.0",
+    "babel-runtime": "^6.20.0",    
     "emitter-component": "^1.1.1",
     "moment": "^2.12.0",
     "propagating-hammerjs": "^1.4.6",
@@ -41,6 +43,7 @@
     "babel-loader": "^6.2.10",
     "babel-plugin-transform-es3-member-expression-literals": "^6.8.0",
     "babel-plugin-transform-es3-property-literals": "^6.8.0",
+    "babel-plugin-transform-runtime": "^6.15.0",
     "babel-preset-es2015": "^6.18.0",
     "babelify": "^7.3.0",
     "clean-css": "^3.4.10",