rem: commandNode = document.getElementById("cmd_bm_copy"); 
add: commandNode = document.getElementById("cmd_copy"); 
context:   onCommandUpdate: function ()  {    var selection = this._selection;    var target    = this._target;    BookmarksController.onCommandUpdate(selection, target);    if (document.popupNode.id == "bookmarks-ptf") {      // disabling 'cut' and 'copy' on the empty area of the personal toolbar      var commandNode = document.getElementById("cmd_bm_cut");      commandNode.setAttribute("disabled", "true");      commandNode = document.getElementById("cmd_bm_copy");      commandNode.setAttribute("disabled", "true");    }  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/0be55187c2a3fb192f00adece327303caa8c1f8e/bookmarksMenu.js/clean/browser/components/bookmarks/content/bookmarksMenu.js