#nav_top {
  background: url(/static/backgrounds/Bilder/blau_01.jpg?1000) no-repeat;
  width: 900px;
  height: 147px;
}

#nav_bottom {
  background: url(/static/backgrounds/Bilder/blau_02.jpg) no-repeat;
  width: 900px;
  height: 33px;
}

#menu {
  border: solid blue 2px;
}