function animation_effect_show (site_number) {
  
  //Pfeil austauschen
  document.getElementById("lexicon_closed_"+site_number).style.display = 'none';   
  document.getElementById("lexicon_opened_"+site_number).style.display = 'block';
  
  //Hintergrundfarbe tauschen
  document.getElementById("lexicon_entry_"+site_number).style.backgroundColor = '#E6E6E6';
  
  //slide effekt
  //new Effect.BlindDown(document.getElementById("lexicon_descr_"+site_number), {duration:3});
  //new Effect.BlindDown(document.getElementById("lexicon_print_div_"+site_number), {duration:3});
  document.getElementById("lexicon_descr_"+site_number).style.display = 'block';
  document.getElementById("lexicon_print_div_"+site_number).style.display = 'block';
}

function animation_effect_hide (site_number) {
  //Pfeil austauschen
  document.getElementById("lexicon_closed_"+site_number).style.display = 'block'; 
  document.getElementById("lexicon_opened_"+site_number).style.display = 'none'; 
   
  //Hintergrundfarbe tauschen
  document.getElementById("lexicon_entry_"+site_number).style.backgroundColor = '#FFFFFF';
     
  //slide effekt
  document.getElementById("lexicon_descr_"+site_number).style.display = 'none';
  document.getElementById("lexicon_print_div_"+site_number).style.display = 'none';
}

function article_more_links_show() {
  document.getElementById("article_more_links_container").style.display = 'block'; 
  //article_more_links_container

}