#content ul#main-av-nav {
  background-image: url(/images/home-nav-square.gif);
  height: 160px;
  width: 540px;
  position: relative;
  margin: 1em auto 1em auto;
  list-style: none;
  list-style-type: none;
}

#content ul#main-av-nav li a {
  display: block;
  text-indent: -999em;
  margin: 0;
  position: absolute;
  top: 0;
  height: 160px;
  width: 160px;
  overflow: hidden;
}

#content ul#main-av-nav li a:hover {
  background-image: url(/images/home-nav-square.gif);
  background-repeat: no-repeat;
}

#content ul#main-av-nav div {
  position: absolute;
  top: 0;
  width: 160px;
  height: 160px;
  background-image: url(/images/home-nav-square.gif);
  background-repeat: no-repeat;
}

#content ul#main-av-nav li.net-new a:link,
#content ul#main-av-nav li.net-new a:visited,
#content ul#main-av-nav li.net-new a:active {
  left: 15px;
}

#content ul#main-av-nav li.net-new a:hover {
  background-position: -15px -160px;
}

#content ul#main-av-nav .nav-net-new {
  left: 15px;
  background-position: -15px -160px;
}

#content ul#main-av-nav li.continuous-improvement a:link,
#content ul#main-av-nav li.continuous-improvement a:visited,
#content ul#main-av-nav li.continuous-improvement a:active {
  left: 192px;
}

#content ul#main-av-nav li.continuous-improvement a:hover {
  background-position: -192px -160px;
}

#content ul#main-av-nav .nav-continuous-improvement {
  left: 192px;
  background-position: -192px -160px;
}

#content ul#main-av-nav li.why-c3 a:link,
#content ul#main-av-nav li.why-c3 a:visited,
#content ul#main-av-nav li.why-c3 a:active {
  left: 369px;
}

#content ul#main-av-nav li.why-c3 a:hover {
  background-position: -369px -160px;
}

#content ul#main-av-nav .nav-why-c3 {
  left: 369px;
  background-position: -369px -160px;
}