var url = new String(document.location); 
var match = url.match(/^http:\/\/[^\/]+\/([A-Z_-]+)/i);

function menu(name)
{
  var item = new obj(name);

  if (item.id)
  {
    item.style.display = "block";
  }
}

if (match)
{
  var div = new obj(match[1]);

  if (div.id)
  {
    div.style.display = "block";

    match = url.match(/^http:\/\/[^\/]+\/[^\/]+\/([A-Z_-]+)/i);
    if (match)
    {
      menu(match[1]);
    }
  }
  else
  {
    show_home();
  }
}
else
{
  show_home();
}

function show_home()
{
  var home = new obj("home");
  home.style.display = "block";
}

function obj(name)
{
  return document.getElementById(name);
}