.bl {background: url(common/images/leftcorner.gif) 0 100% no-repeat}
.br {background: url(common/images/rightcorner.gif) 100% 100% no-repeat}
.tl {background: url(common/images/leftcorner_top.gif) 0 0 no-repeat}
.tr {background: url(common/images/rightcorner_top.gif) 100% 0 no-repeat; padding:10px}
.tss {background: url(dot.gif) 0 0 repeat-x; width: 145px}
.t {background: url(dot.gif) 0 0 repeat-x; width: 600px}
.b {background: url(dot.gif) 0 100% repeat-x}
.l {background: url(dot.gif) 0 0 repeat-y}
.r {background: url(dot.gif) 100% 0 repeat-y}
.f {background: url(dot.gif) 0 0 repeat-x; width: 705px}