.r20-bl {
	background: url('../images/r20-bl.png') 0 100% no-repeat;
	display: block;
	float: left;
	width: 100%;
	height: 100%;
}

.r20-br {
	background: url('../images/r20-br.png') 100% 100% no-repeat;
	display: block;
	float: left;
	width: 100%;
	height: 100%;
}

.r20-tl {
	background: url('../images/r20-tl.png') 0 0 no-repeat;
	display: block;
	float: left;
	width: 100%;
	height: 100%;
}

.r20-tr {
	background: url('../images/r20-tr.png') 100% 0 no-repeat;
	display: block;
	float: left;
	width: 100%;
	height: 100%;
}

.r30-bl {
	background: url('../images/r30-bl.png') 0 100% no-repeat;
	display: block;
	float: left;
	width: 100%;
	height: 100%;
}

.r30-br {
	background: url('../images/r30-br.png') 100% 100% no-repeat;
	display: block;
	float: left;
	width: 100%;
	height: 100%;
}

.r30-tl {
	background: url('../images/r30-tl.png') 0 0 no-repeat;
	display: block;
	float: left;
	width: 100%;
	height: 100%;
}

.r30-tr {
	background: url('../images/r30-tr.png') 100% 0 no-repeat;
	display: block;
	float: left;
	width: 100%;
	height: 100%;
}

.corner-bl {
	background: url('../images/corner-bl.png') 0 100% no-repeat;
	display: block;
	float: left;
	width: 100%;
	height: 100%;
}

.corner-br {
	background: url('../images/corner-br.png') 100% 100% no-repeat;
	display: block;
	float: left;
	width: 100%;
	height: 100%;
}