달력 입력폼 클릭시 달력이 안뜨네요.. 채택완료

사이트에서 경매를 사용하고 있는데 입력폼을 클릭하면 달력이 떠야되는데

 익스플로러 9에서는 되는데 11에서는 안되네요..  어떻게 고쳐야될까요?

도와주세요. ㅜ.ㅜ

<? if (trim($board['bo_4_subj'])) { ?>
<tr>
    <td class=write_head><?=$board['bo_4_subj']?></td>
    <td><input class='ed' size=30 name=wr_4 itemname="<?=$board['bo_4_subj']?>" value="<?=$write["wr_4"]?>"></td></tr>
<tr><td colspan=2 height=1 bgcolor=#e7e7e7></td></tr>
<? } ?>

<?
 //경매종료시간
 if (trim($board['bo_5_subj'])) {

  //$write["wr_5"]
$w_date ="";
$schedule_hour ="";
$schedule_min ="";
if(trim($write["wr_5"])){
$datearr =explode(" ",$write["wr_5"]);
$hmarr =explode(":",$datearr[1]);

$w_date =$datearr[0];
$schedule_hour =$hmarr[0];
$schedule_min =$hmarr[1];
}

  ?>
<tr>
    <td class=write_head><?=$board['bo_5_subj']?></td>
    <td>

 <input name="w_date" id="w_date" itemname="종료일" required value="<?=$w_date?>" type="text" value="" style="cursor: hand" size="10" onclick="Calendar_D(document.fwrite.w_date)"  readonly />일

<select name="w_hour" class="input_01" style="width: 60px;" >
    <option value="00">00 시</option>
    <?
           for ($strs= 1; $strs <= 23; $strs++) {
            if (strlen($strs) == 1) {
             $strs= "0" . $strs;
            } else {
             $strs= $strs;
            }
            $BUFFER .= "<option value='".$strs."' ";
                                                if($strs == $schedule_hour){
                                                   $BUFFER .="selected";
                                                }
                                                $BUFFER .= " >".$strs." 시</option> \n";
           }
           echo $BUFFER;
           ?>
  </select>
  <select name="w_min" class="input_02" style="width: 60px;" >
    <option value="00">00 분</option>
    <?
           $BUFFER= "";
           for ($strs= 5; $strs <= 55; $strs= $strs +5) {
            if (strlen($strs) == 1) {
             $strs= "0" . $strs;
            } else {
             $strs= $strs;
            }

                                                $BUFFER .= "<option value='".$strs."' ";
                                                if($strs == $schedule_min){
                                                   $BUFFER .="selected";
                                                }
                                                $BUFFER .= " >".$strs." 분</option> \n";

           }
           echo $BUFFER;
           ?>
  </select>
<input type="hidden" name="wr_5" value="" />
<? /*
 <input class='ed' size=30 name=wr_5 itemname="<?=$board['bo_5_subj']?>" value="<?=$write["wr_5"]?>">
 <? */?>