#nav {
  margin-left: 100px;
}

#nav li a:hover {
  background-position: 0 -47px;
}

#nav_home {
}

#nb_0 {
  width: 51px;
  height: 47px;
  background: url("/images/assembly/nav2_home.gif") no-repeat;
  text-indent: -999em;
}

#nb_1 {
  width: 91px;
  height: 47px;
  background: url("/images/assembly/nav2_about.gif") no-repeat;
  text-indent: -999em;
}

#nb_2 {
  width: 121px;
  height: 47px;
  background: url("/images/assembly/nav2_explore.gif") no-repeat;
  text-indent: -999em;
}

#nb_3 {
  width: 106px;
  height: 47px;
  background: url("/images/assembly/nav2_protected.gif") no-repeat;
  text-indent: -999em;
}

#nb_4 {
  width: 132px;
  height: 47px;
  background: url("/images/assembly/nav2_preserve.gif") no-repeat;
  text-indent: -999em;
}

#nb_5 {
  width: 80px;
  height: 47px;
  background: url("/images/assembly/nav2_resources.gif") no-repeat;
  text-indent: -999em;
}