.ro {
	background:url(roundedbox_ro.gif) top right no-repeat;
	margin:0;
	padding:0;
}

.lo {
	background:url(roundedbox_lo.gif) top left no-repeat;
	margin:0;
	padding:0;
}

.ru {
	background:url(roundedbox_ru.gif) bottom right no-repeat;
	margin:0;
	padding:0;
}

.lu {
	background:url(roundedbox_lu.gif) bottom left no-repeat;
	margin:0;
	padding:0;
}