#ui-datepicker-div
{
    display: none;
}


.ui-datepicker {
    background: white;
    border: 1px solid #555;
    color: black;
 }

.ui-datepicker th { /for the headers in the pop up calendar/
color: black;
}

.ui-datepicker th.ui-datepicker-week-end {
color:red;
}