Paste code

<div id="advanced_select_date">
   <span id="advanced_search_lbl">Issue Date</span>
   <p>
    <span class="select">January 2008</span>
    <select name="select_from" class="styled">
     <option selected value="January 2008">January 2008</option>
     <option value="February 2008">February 2008</option>
     <option value="March 2008">March 2008</option>
     <option value="April 2008">April 2008</option>
     <option value="May 2008">May 2008</option>
     <option value="June 2008">June 2008</option>
     <option value="July 2008">July 2008</option>
     <option value="August 2008">August 2008</option>
     <option value="September 2008">September 2008</option>
     <option value="October 2008">October 2008</option>
     <option value="November 2008">November 2008</option>
     <option value="December 2008">December 2008</option>
    </select>
   </p>
                 </div>


span.select {
    background: url("/images/advanced_search_select.png") no-repeat scroll 0 0 transparent;
    border: 1px solid #CCCCCC;
    color: #7A7A7A;
    font: 12px/21px arial,sans-serif;
    height: 20px;
    overflow: hidden;
    padding: 0 24px 0 8px;
    position: absolute;
    width: 115px;
 display:none; /*quit this attribute*/
}

.styled {
    opacity: 1;
    position: relative;
    width: 149px;
    z-index: 5;
 float:left;
 margin-right: 10px;
}