.t {background: url(../images/global/box/top_line.gif) 0 0 repeat-x #efefef;}
.b {background: url(../images/global/box/bottom_line.gif) 0 100% repeat-x;padding-bottom:1px;}
.l {background: url(../images/global/box/left_line.gif) 0 0 repeat-y;}
.r {background: url(../images/global/box/right_line.gif) 100% 0 repeat-y;}

.bl {background: url(../images/global/box/bottom_left.gif) 0 100% no-repeat;}
.br {background: url(../images/global/box/bottom_right.gif) 100% 100% no-repeat;}
.tl {background: url(../images/global/box/top_left.gif) 0 0 no-repeat;}
.tr {background: url(../images/global/box/top_right.gif) 100% 0 no-repeat; padding:10px;}