.tl { position:absolute; top:-1px;left:-1px; background-position: 100% 100%; }
.tr { position:absolute; top:-1px;right:-1px; background-position: 0 100%; }
.br { position:absolute; bottom:-1px;right:-1px; background-position: 0 0; }
.bl { position:absolute; bottom:-1px;left:-1px; background-position: 100% 0; }

ul.menu_sitemap  { padding-left: 1em }
.menu_sitemap ul { padding-left: 1em }

img {border:none}