.diva{
    width: 133px;
    padding: 11px;
    margin: 11px;
    float: left;
    border: 1px solid #000;
    behavior: url("css/PIE.htc");
    -moz-border-radius: 7px;
    -khtml-border-radius: 7px;
    -webkit-border-radius: 7px;
    border-radius: 7px;
    position: relative;
}
.divb{
    width: 133px;
    padding: 11px;
    margin: 11px;
    float: left;
    border: 1px solid #000;
}