@namespace url(http://www.w3.org/1999/xhtml);

a:hover>img{

  -moz-outline: 2px solid #FC9C00 !important;
  -moz-outline-offset: 1px !important;
  -moz-outline-radius: 5px !important;
}
a:focus>img { -moz-outline: none !important; }