function setTab(name,cursel,n){
for(i=1;i<=n;i++){
  var menu=document.getElementById(name+i);
  var con = document.getElementById("con_" + name + "_" + i);
  if (menu != null && con != null) {
      menu.className = i == cursel ? "hover" : "";
      con.style.display = i == cursel ? "block" : "none";
  }
}
}