#header li {
  float: left;
  display: inline;
}

#header li a {
  display: block;
  text-indent: -9999px;
}

#header li a.btn-home {
  width: 131px;
  height: 174px;
  background: url('http://www.coloradoenergystarhomes.com/images/site/home.jpg') top left no-repeat;
}

#header li a.btn-buyer {
  width: 129px;
  height: 174px;
  background: url('http://www.coloradoenergystarhomes.com/images/site/homebuyer.jpg') top left no-repeat;
}

#header li a.btn-builder {
  width: 130px;
  height: 174px;
  background: url('http://www.coloradoenergystarhomes.com/images/site/homebuilder.jpg') top right no-repeat;
}

#header li a.btn-local {
  width: 152px;
  height: 174px;
  background: url('http://www.coloradoenergystarhomes.com/images/site/local.jpg') top right no-repeat;
}

#header li a.btn-resources {
  width: 129px;
  height: 174px;
  background: url('http://www.coloradoenergystarhomes.com/images/site/resources.jpg') top left no-repeat;
}

#header li a.btn-events {
  width: 113px;
  height: 174px;
  background: url('http://www.coloradoenergystarhomes.com/images/site/events.jpg') top left no-repeat;
}

#header li a.btn-home:hover {
  width: 131px;
  height: 174px;
  background: url('http://www.coloradoenergystarhomes.com/images/site/home.jpg') bottom left no-repeat;
}

#header li a.btn-buyer:hover {
  width: 129px;
  height: 174px;
  background: url('http://www.coloradoenergystarhomes.com/images/site/homebuyer.jpg') bottom left no-repeat;
}

#header li a.btn-builder:hover {
  width: 130px;
  height: 174px;
  background: url('http://www.coloradoenergystarhomes.com/images/site/homebuilder.jpg') bottom right no-repeat;
}

#header li a.btn-local:hover {
  width: 152px;
  height: 174px;
  background: url('http://www.coloradoenergystarhomes.com/images/site/local.jpg') bottom right no-repeat;
}

#header li a.btn-resources:hover {
  width: 129px;
  height: 174px;
  background: url('http://www.coloradoenergystarhomes.com/images/site/resources.jpg') bottom left no-repeat;
}

#header li a.btn-events:hover {
  width: 113px;
  height: 174px;
  background: url('http://www.coloradoenergystarhomes.com/images/site/events.jpg') bottom left no-repeat;
}