rem: document.getElementById("bookmarks-chevron").parentNode 
add: document.getElementById("overflow-padder") 
context:   get mObservers ()  {    if (!this._observers) {      this._observers = [        document.getElementById("bookmarks-ptf"),        document.getElementById("bookmarks-menu").parentNode,        document.getElementById("bookmarks-chevron").parentNode      ]    }    return this._observers;  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/2e17cd23168e235c5cbecb8ee31d99200b5c8071/bookmarksMenu.js/clean/browser/components/bookmarks/content/bookmarksMenu.js