wr_last 에서 날짜 입력을 받구요

아래처럼 소스를 구해서 적용했는데 잘안되가지구요 ㅠㅠ


<form name=fsearch2 method=get style="margin:0px;">
<input type=hidden name=bo_table value="<?=$bo_table?>">
<tr>
    <td width="50%" height="40">
        <select name=wr_last>
            <option value='wr_last'>진행일자 검색</option>
        </select>
           

<input class='ed' type=t_start id=t_start name='wr_last' size=8 maxlength=8 minlength=8 
itemname='시작일' value='<?=$wr_last?>' readonly >
<a href="javascript:win_calendar('t_start', document.getElementById('t_start').value, '');">
<img src='<?=$board_skin_path?>/img/calendar.gif' border=0 align=absmiddle title='시작일을 입력하세요'></a>
&nbsp;~&nbsp;<input class='ed' type=t_end id=t_end name='wr_last' size=8 maxlength=8 minlength=8 
itemname='마지막일' value='<?=$wr_last?>' readonly >
<a href="javascript:win_calendar('t_end', document.getElementById('t_end').value, '');">
<img src='<?=$board_skin_path?>/img/calendar.gif' border=0 align=absmiddle title='종료일을 입력하세요'></a>
        <input type=image src="<?=$board_skin_path?>/img/search_btn.gif" border=0 align=absmiddle>
</form>
    </td>
    <td align="right">

        </td>
</tr>
</form>

도움좀 주세요 ㅠㅠ