.clear { /* generic container (i.e. div) for floating buttons */
    overflow: hidden;
    width: 100%;
}

a.button {
    background: url(../images/bg_button_a_16.gif) no-repeat right top;
    color: #444;
    display: block;
    float: right;
    font: 10px arial, sans-serif;
    height: 16px;
    margin-right: 6px;
    padding-right: 12px; /* sliding doors padding */
    text-decoration: none;
}

a.button span {
    background: url(../images/bg_button_span_16.gif) no-repeat;
    display: block;
    line-height: 12px;
    padding: 2px 0 2px 12px;
} 

a.button:active {
    background-position: bottom right;
    color: #000;
    outline: none; /* hide dotted outline in Firefox */
}

a.button:active span {
    background-position: left bottom;
    padding: 2px 0 2px 12px; /* push text down 1px */
}