I have treepanel. On some specific condition I want to show image on mouse enter and remove that image on mouseleave in treenode. but when i hover the mouse quickly image get added but not getting removed as itemmouseleave event is not getting fired.  I have prepared jsfiidle to understand my problem in which I am trying to change text of node on mouseenter and mouseleave. on slow motion it is working fine but if hover quickly it shows mouseenter even if we are away from node.