.navheader {
  position: absolute;
  left: 0px;
  top: 0px;
  width: 920px;
  height: 103px;
  z-index: 10000;
  background: url("/powerofgreen/img/nav_main.gif"); }
  .navheader .menu-collections {
    position: absolute;
    width: 920px;
    margin-left: 22px;
    margin-top: 19.5px; }
    .navheader .menu-collections .item {
      float: left;
      width: 146px;
      height: 81px; }
      .navheader .menu-collections .item img {
        opacity: 0;
        width: 145px;
        height: 80px;
        -moz-transition: opacity 200ms ease-in-out;
        -webkit-transition: opacity 200ms ease-in-out;
        transition: opacity 200ms ease-in-out; }
      .navheader .menu-collections .item:hover img {
        opacity: 1; }
      .navheader .menu-collections .item.home {
        width: 160px; }
      .navheader .menu-collections .item.active img {
        opacity: 1; }