.bl {background:url(../images/bl3.gif) 0 100% no-repeat}
.br {background:url(../images/br3.gif) 100% 100% no-repeat}
.tl {background:url(../images/tl3.gif) 0 0 no-repeat}
.tr {background:url(../images/tr3.gif) 100% 0 no-repeat}
.t {background:url(../images/dot3.gif) 0 0 repeat-x}
.b {background:url(../images/dot3.gif) 0 100% repeat-x}
.l {background:url(../images/dot3.gif) 0 0 repeat-y}
.r {background:url(../images/dot3.gif) 100% 0 repeat-y}
.v {background:url(../images/dot3.gif) 0 0 repeat-y}