.rbroundbox { background: url('cajas/01nt.gif'); }
.rbtop div { background: url('cajas/01tl.gif') no-repeat top left; }
.rbtop { background: url('cajas/01tr.gif') no-repeat top right; }
.rbbot div { background: url('cajas/01bl.gif') no-repeat bottom left; }
.rbbot { background: url('cajas/01br.gif') no-repeat bottom right; }

.rbtop div, .rbtop, .rbbot div, .rbbot {
width: 100%;
height: 7px;
font-size: 1px;
}
.rbcontent { margin: 0 7px; }
.rbroundbox { width: 60%; }

.rbroundbox1 { background: url('cajas/01nt.gif'); }
.rbtop1 div { background: url('cajas/01tl.gif') no-repeat top left; }
.rbtop1 { background: url('cajas/01tr.gif') no-repeat top right; }
.rbbot1 div { background: url('cajas/01bl.gif') no-repeat bottom left; }
.rbbot1 { background: url('cajas/01br.gif') no-repeat bottom right; }

.rbtop1 div, .rbtop1, .rbbot1 div, .rbbot1 {
width: 100%;
height: 7px;
font-size: 1px;
}
.rbcontent1 { margin: 0 7px; }
.rbroundbox1 { width: 100%; }

.rbroundbox2 { background: url('cajas/02nt.gif'); }
.rbtop2 div { background: url('cajas/02tl.gif') no-repeat top left; }
.rbtop2 { background: url('cajas/02tr.gif') no-repeat top right; }
.rbbot2 div { background: url('cajas/02bl.gif') no-repeat bottom left; }
.rbbot2 { background: url('cajas/02br.gif') no-repeat bottom right; }

.rbtop2 div, .rbtop2, .rbbot2 div, .rbbot2 {
width: 100%;
height: 7px;
font-size: 1px;
}
.rbcontent2 { margin: 0 7px; }
.rbroundbox2 { width: 100%; }

.rbroundbox3 { background: url('cajas/03nt.gif'); }
.rbtop3 div { background: url('cajas/03tl.gif') no-repeat top left; }
.rbtop3 { background: url('cajas/03tr.gif') no-repeat top right; }
.rbbot3 div { background: url('cajas/03bl.gif') no-repeat bottom left; }
.rbbot3 { background: url('cajas/03br.gif') no-repeat bottom right; }

.rbtop3 div, .rbtop3, .rbbot3 div, .rbbot3 {
width: 100%;
height: 7px;
font-size: 1px;
}
.rbcontent3 { margin: 0 7px; }
.rbroundbox3 { width: 100%; }

.rbroundbox4 { background: url('cajas/04nt.gif'); }
.rbtop4 div { background: url('cajas/04tl.gif') no-repeat top left; }
.rbtop4 { background: url('cajas/04tr.gif') no-repeat top right; }
.rbbot4 div { background: url('cajas/04bl.gif') no-repeat bottom left; }
.rbbot4 { background: url('cajas/04br.gif') no-repeat bottom right; }

.rbtop4 div, .rbtop4, .rbbot4 div, .rbbot4 {
width: 100%;
height: 7px;
font-size: 1px;
}
.rbcontent4 { margin: 0 7px; }
.rbroundbox4 { width: 100%; }

.rbroundbox5 { background: url('cajas/05nt.gif'); }
.rbtop5 div { background: url('cajas/05tl.gif') no-repeat top left; }
.rbtop5 { background: url('cajas/05tr.gif') no-repeat top right; }
.rbbot5 div { background: url('cajas/05bl.gif') no-repeat bottom left; }
.rbbot5 { background: url('cajas/05br.gif') no-repeat bottom right; }

.rbtop5 div, .rbtop5, .rbbot5 div, .rbbot5 {
width: 100%;
height: 7px;
font-size: 1px;
}
.rbcontent5 { margin: 0 7px; }
.rbroundbox5 { width: 100%; }

.rbroundbox6 { background: url('cajas/06nt.gif'); }
.rbtop6 div { background: url('cajas/06tl.gif') no-repeat top left; }
.rbtop6 { background: url('cajas/06tr.gif') no-repeat top right; }
.rbbot6 div { background: url('cajas/06bl.gif') no-repeat bottom left; }
.rbbot6 { background: url('cajas/06br.gif') no-repeat bottom right; }

.rbtop6 div, .rbtop6, .rbbot6 div, .rbbot6 {
width: 100%;
height: 7px;
font-size: 1px;
}
.rbcontent6 { margin: 0 7px; }
.rbroundbox6 { width: 100%; }