.dark_blue-tl {
	background-image: url(../images/nav-corner-t_l.png);
	background-repeat: no-repeat;
	background-position: left top;
	height: 2px;
	width: 2px;
}
.dark_blue-tr {
	background-image: url(../images/nav-corner-t_r.png);
	background-repeat: no-repeat;
	background-position: right top;
	height: 2px;
	width: 2px;
}
.dark_blue-bl {
	background-image: url(../images/nav-corner-b_l.png);
	background-repeat: no-repeat;
	background-position: left bottom;
	height: 2px;
	width: 2px;
}
.dark_blue-br {
	background-image: url(../images/nav-corner-b_r.png);
	background-repeat: no-repeat;
	background-position: right bottom;
	height: 2px;
	width: 2px;
}