WebVR.js: Avoid glow effect.

examples/js/vr/WebVR.js

@@ -63,6 +63,7 @@ var WEBVR = {
 			element.style.font = 'normal 13px sans-serif';
 			element.style.textAlign = 'center';
 			element.style.opacity = '0.5';
+			element.style.outline = 'none';
 			element.style.zIndex = '999';
 
 		}