function show_news()
{
  news_hide_all();
  
  $('homepage_news').show();
  $('homepage_news_more').show();
  $('btn_mainnews').addClassName('active');
};
function show_features() {
  news_hide_all();
  
  $('homepage_features').show();
  $('homepage_features_more').show();
  $('btn_features').addClassName('active');
};
function show_blogs() {
  news_hide_all();
  
  $('homepage_blogs').show();
  if ($('homepage_blogs_more'))
    $('homepage_blogs_more').show();
  $('btn_blogs').addClassName('active');
};
function show_columnists() {
  news_hide_all();
  
  $('homepage_columnists').show();
  $('homepage_columnists_more').show();
  $('btn_columnists').addClassName('active');
};
function show_tournews() {
  news_hide_all();
  
  $('homepage_tournews').show();
  $('homepage_tournews_more').show();
  $('btn_tournews').addClassName('active');
};

function news_hide_all() {
  $$('#latest_news #tournament_news .post_news').invoke('hide');
  $$('#latest_news #tournament_news .homepage_more_news').invoke('hide');
  $$('#latest_news li a').each(function(elm){ elm.removeClassName('active'); });
}