<!--
function change(id,name,co){
	if(document.getElementById(name+"0"))
		document.getElementById(name+"0").style.display="none";
  for(i=1;i<=co;i++){
   class_name=name+i;
   class_name2=name+"_"+i;
   if (id==i){
    document.getElementById(class_name).style.display="block";

   }else{
    document.getElementById(class_name).style.display="none";

   }
  }
 }
//-->