rem: if (!this.isBTBookmark(target.id)) 
add: if (!this.isBTBookmark(target.id) && target.id != "bookmarks-ptf") 
context:   createContextMenu: function (aEvent)  {    var target = document.popupNode;    if (!this.isBTBookmark(target.id))      return false;    target.focus() // buttons in the pt have -moz-user-focus: ignore -->    this._selection   = this.getBTSelection(target);    this._orientation = this.getBTOrientation(aEvent, target);    this._target      = this.getBTTarget(target, this._orientation);    BookmarksCommand.createContextMenu(aEvent, this._selection);    this.onCommandUpdate();    aEvent.target.addEventListener("mousemove", BookmarksMenuController.onMouseMove, false);    return true;  },
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/01282cf13216913670a98fca0c6afa242260d377/bookmarksMenu.js/buggy/xpfe/components/bookmarks/resources/bookmarksMenu.js