rem: this.removeSelection(aAction, aSelection, aTarget); 
add: this.removeSelection(aAction, aSelection); 
context:   removeAndCheckSelection: function (aAction, aSelection)  {    isValid = BookmarksUtils.isSelectionValidForDeletion(aSelection);    if (!isValid) {      SOUND.beep();      return false;    }    this.removeSelection(aAction, aSelection, aTarget);    BookmarksUtils.flushDataSource();    return true;  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/d021e8e05b99f062c58869fab512ebe527a81492/bookmarks.js/buggy/browser/components/bookmarks/content/bookmarks.js