// JScript 文件

function doClick(o){
    o.className="nav_current";
    var j;
    var id;
    var e;
    for(var i=1;i<=2;i++){
    id ="nav"+i;
    j = document.getElementById(id);
    e = document.getElementById("sub"+i);
    if(id != o.id){
      j.className="nav_link";
      e.style.display = "none";
    }else{
   e.style.display = "block";
    }
  }
}
function doClick_down(o){
  o.className="down_current";
  var j;
  var id;
  var e;
  for(var i=1;i<=4;i++){
    id ="down"+i;
    j = document.getElementById(id);
    e = document.getElementById("d_con"+i);
    if(id != o.id){
      j.className="down_link";
      e.style.display = "none";
    }else{
  e.style.display = "block";
    }
  }
}