.nav_button{
  background-image: url(/components/nav/nav_button.gif);
  background-repeat: no-repeat;
  background-position: center;
  color: #ffffff;
  cursor: pointer;
  display: block;
  padding-left: 16px;
  padding-bottom: 12px;
  padding-top: 12px;
  text-decoration: none;
}