function switch_div(d_id){
obj=document.getElementById(d_id);
flager=document.getElementById("indi"+d_id);

if(obj){
 if(obj.style.display=='none'||!obj.style.display){
  obj.style.display='block';
  flager.innerHTML='<img src="/images/img/cat_minus.gif" id="katarr" style="text-decoration: none;"/>';}
 else {
  obj.style.display='none';
  flager.innerHTML='<img src="/images/img/cat_plus.gif" id="katarr" style="text-decoration: none;"/>';}
 }

}