ContentSyndication/MozillaSidebar

header

<script type="text/javascript" language="JavaScript">
<!--
function addTab(tabName,tabURL,tabCURL) { 
  if ((window.sidebar) && (window.sidebar.addPanel)) {
      try {
         window.sidebar.addPanel(tabName,tabURL,tabCURL); 
      }
      catch (e) {
         alert('An error occurred when trying to add our tab to your '+
               'Sidebar. This is most likely the result of a known bug '+
               '(see Bugzilla #97016) in some Netscape6/Mozilla versions. '+
               'You should be able to click the add tab link again now '+
               'and it should work properly.\n\n'+
               'If you continue to have problems, try opening your sidebar '+
               'first, and then click the add tab link.');
      }
  } else { 
      alert('Sorry, you can only add the '+tabName+' tab if you are '+
            'running Netscape 6 or Mozilla.');
  } 
}

//-->
</script>

body

<a href="info.html" onclick="addTab('und sonst in bremen?','http://www.dekoder.de/zakk/entwurfv4.1/sidebar.html','')"> mozilla-sidebar</a>