.t_ {background: #d1d3d4; url(../images/dot.gif) 0 0 repeat-x}
.b_ {background: url(../images/dot.gif) 0 100% repeat-x}
.l_ {background: url(../images/dot.gif) 0 0 repeat-y}
.r_ {background: url(../images/dot.gif) 100% 0 repeat-y}
.bl_ {background: url(../images/bl.png) 0 100% no-repeat}
.br_ {background: url(../images/br.png) 100% 100% no-repeat}
.tl_ {background: url(../images/tl.png) 0 0 no-repeat}
.tr_ {background: url(../images/tr.png) 100% 0 no-repeat; padding:10px}