&sidebar.whats-related.label;
chrome://communicator/content/related/related-panel.xul
&sidebar.search.label;
chrome://communicator/content/search/search-panel.xul
&sidebar.client-bookmarks.label;
chrome://communicator/content/bookmarks/bm-panel.xul
&sidebar.client-history.label;
chrome://communicator/content/history/history-panel.xul
&sidebar.client-addressbook.label;
chrome://messenger/content/addressbook/addressbook-panel.xul