rem: return false; 
add: else this._enabled = false; 
context:   get enabled() {    if (this._mode == ADD_BOOKMARK_MODE) {      // If we're adding a bookmark, we only have to worry about livemarks      // and bookmarking multiple tabs.      if ("feedURL" in gArg || gArg.bBookmarkAllTabs)        return false;    }    else if (this._mode == EDIT_BOOKMARK_MODE) {      // If we're modifying a bookmark, it could be a livemark, separator,      // folder, or regular page.  The picker is only enabled for regular pages.      var isLivemark = BookmarksUtils.resolveType(gResource) == "Livemark";      var isSeparator = BookmarksUtils.resolveType(gResource) == "BookmarkSeparator";      var isContainer = RDFCU.IsContainer(BMDS, gResource);      if (isLivemark || isSeparator || isContainer)        return false;    }    else {      // We should never get to this point, since we're only being used      // in the Add Bookmark and Bookmark Properties dialogs, but if we're here      // for some reason, be conservative and assume the picker is disabled.      return false;    }      // We haven't found a reason to disable the picker, so say it's enabled.    return true;  },
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/8395/dd14aef9c61674bd4649cc5ed528a0809d0e1811/microsummaryPicker.js/clean/browser/components/bookmarks/content/microsummaryPicker.js