rem: aEvent.target.removeEventListener("mousemove", BookmarksMenuController.onMouseMove, false) 
add: aEvent.target.removeEventListener("mousemove", BookmarksMenuController.onMouseMove, false); 
context:   destroyContextMenu: function (aEvent)  {    if (content)       content.focus()    BookmarksMenuDNDObserver.onDragRemoveFeedBack(document.popupNode); // needed on cancel    aEvent.target.removeEventListener("mousemove", BookmarksMenuController.onMouseMove, false)  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/91826d00aaee6161d23473d1b93a86ba438c2948/bookmarksMenu.js/clean/xpfe/components/bookmarks/resources/bookmarksMenu.js