function secBoard3(elementID,listName,n) {
 var elem3 = document.getElementById(elementID);
 var elemlist3 = elem3.getElementsByTagName("li");
 for (var i=0; i<elemlist3.length; i++) {
  elemlist3[i].className = "normal";
  var m = i+1;
  document.getElementById(listName+"_"+m).className = "normal";
 }
  elemlist3[n-1].className = "current";
  document.getElementById(listName+"_"+n).className = "current";
}