a.dp-choose-date {
    float: left;
    width: 16px;
    height: 16px;
    padding: 0;
    margin: 5px 3px 0;
    display: block;
    text-indent: -2000px;
    overflow: hidden;
    background: url(calendar.png) no-repeat; 
}
a.dp-choose-date.dp-disabled {
    background-position: 0 -20px;
    cursor: default;
}
/* makes the input field shorter once the date picker code
 * has run (to allow space for the calendar icon
 */
input.dp-applied {
    width: 140px;
    float: left;
}