function SwSearch(name) {
  Oeko = document.getElementById('Suche_Oeko');
  Google = document.getElementById('Suche_Google');
  switch(name) {
    case "Oeko" :
       Google.style.display = 'none';
       Oeko.style.display = 'block';
       return true;
       break;
    case "Google" :
       Oeko.style.display = 'none';
       Google.style.display = 'block';
       return true;
       break;
  
  }

}