function changeImage(id,cid,dir,color,dname){
      if(dir == '1'){
          document.getElementById('cat_'+id).src = '/images/selector_cat_'+id+'_selected.png';
          document.getElementById('cat_'+cid).src = '/images/selector_cat_'+cid+'.png';
          document.getElementById('headline_text').innerHTML = dname;
          }
      else{
          document.getElementById('cat_'+cid).src = '/images/selector_cat_'+cid+'_selected.png';
          document.getElementById('cat_'+id).src = '/images/selector_cat_'+id+'.png';
          document.getElementById('headline_text').innerHTML = dname;
          } 
      document.getElementById('headline').style.background = color;
				}