Page.addMethods({
  toggle_topic_display: function(link) {
    var topic_li = $(link).up('.topic');
    if(!topic_li){ return false; }
    
    var see_more_el = $(topic_li).down('.see_more')
    
    if($(see_more_el).visible()) {
      $(link).update("Show more...")
    } else {
      $(link).update("...Show less")      
    }
    
    $(see_more_el).toggle();
  }
});