function expand() {
 if(document.getElementById('moreBricks').style.display=='block')
 {  document.getElementById('moreBricks').style.display='none';  document.getElementById('was').innerHTML = 'Alle Kategorien anzeigen';}
 else{  document.getElementById('moreBricks').style.display='block';  document.getElementById('was').innerHTML = 'Weniger Kategorien anzeigen';}
}