#tb_cont {
    position: relative;
    width: auto;
}
#clear_input {
    width: 12px;
    height: 12px;
    display: inline-block;
    position: absolute;
    right: 8px;
    top: 4px;
    text-align: center;
    background-color: #999999;
    color: #FFFFFF;
    font-size: 10px;
    font-family: monospace;
    border-radius: 10px;
    -o-border-radius: 10px;
    -moz-border-radius: 10px;
    -webkit-border-radius: 10px;
    cursor: pointer;
}