#lang  {
  position: absolute;
  top: 0px;
  right: 0px;
  height: 36px;
  width: 70px;
  background-image: url('../images/bg/lang_cz.jpg');
  background-position: left top;
  background-repeat: no-repeat;
}
#lang:hover  {
  background-image: url('../images/bg/lang_cz_on.jpg');
}
#legenda  {
  background-image: url('../images/bg/legenda_cz.jpg');
}