a.navisub_link_abaplib {
   background: url(../but/lib_selected_sub.png) no-repeat;
}
a.navisub_link_abaplib:hover {
   background: url(../but/lib_selected_sub.png) no-repeat;
}
.sub_nav_container_products {
  display: block;
}
a.navimain_link_products {
   background: url(../but/products_selected.png) no-repeat;
}
a.navimain_link_products:hover {
   background: url(../but/products_selected.png) no-repeat;
}