Change design Style of the ajax calender control

<style>

.cal_Calendar .ajax__calendar_title,

.cal_Calendar .ajax__calendar_next,

.cal_Calendar .ajax__calendar_prev  

 {

    color: #004080;

    padding-top: 3px;

}

 .cal_Calendar .ajax_calendar_invalid .ajax_calendar_day,

  /* Add class for your Invalid dates*/

  .ajax_calendar_invalid

  {

       color:red;  text-decoration:strike; cursor:pointer;

  }

</style>

//html

<ajax:CalendarExtender ID="CalendarExtender1" runat="server"

                  TargetControlID="txtSateDate"

                  PopupButtonID="imgSateDate"

           StartDate = "01/01/2012"

                  CssClass=".cal_Calendar" />

//result