* {
       font-size:13px;
}

.bton-s,
.bton-m,
.bton-l,
.bton-xl,
.bton-xxl {
       height:23px;
       line-height:23px;
       font-size:1.1em;
}

.bton-s {
       width:40px;
       background:url('../images/button-40-23.gif') bottom left no-repeat;
}

.bton-m {
       width:80px;
       background:url('../images/button-80-23.gif') bottom left no-repeat;
}

.bton-l {
       width:120px;
       background:url('../images/button-120-23.gif') bottom left no-repeat;
}

.bton-xl {
       width:160px;
       background:url('../images/button-160-23.gif') bottom left no-repeat;
}

.bton-xxl {
       width:220px;
       background:url('../images/button-220-23.gif') bottom left no-repeat;
}