Merge pull request #316 from andreasrosdal/master

Add check that root.$layer exists, to prevent calling hide() on an defined object.

Author: bbrala

src/jquery.contextMenu.js

@@ -439,7 +439,7 @@
                     var triggerAction = ((root.trigger === 'left' && button === 0) || (root.trigger === 'right' && button === 2));
 
                     // find the element that would've been clicked, wasn't the layer in the way
-                    if (document.elementFromPoint) {
+                    if (document.elementFromPoint && root.$layer) {
                         root.$layer.hide();
                         target = document.elementFromPoint(x - $win.scrollLeft(), y - $win.scrollTop());
                         root.$layer.show();