ติ๊ก Checkbox แล้ว สามารถ Browse ได้คะ หนูอยาก คลิกที่ช่อง Checkbox แล้วสามารถ Browse ได้อะคะ

<?
		$sqlEditKn ="select * from knowledge ";
		$resultEditKn = mysql_query($sqlEditKn,$conn);

	$whereEditKnow = $_GET['id']  ? "where kn_id ='". $_GET['id']."'"  : "where kn_id ='".$_SESSION['id']."'";
			// กำหนด id เพื่อที่จะให้รู้ว่าจะ update ID ไหน  
     		$sqlEditKnow="select * from knowledge where kn_id ='".$_GET['id']."'"; 
		    //echo $sqlEditKnow;
		    $resultEditKnow = mysql_query($sqlEditKnow,$conn);
		    $resEditKnow = mysql_fetch_array($resultEditKnow);
			
			// Query category_knowledge
			$sqlKnowCate ="select * from category_knowledge ";
			$resultKnowCate = mysql_query($sqlKnowCate,$conn);
?>
<form name="form3" id="form3" method="post" action="?name=admin&file=knowledge&action=editknow&addk=edit" enctype="multipart/form-data">
<input type="hidden" name="id" value="<?=$resEditKnow['kn_id']?>">

<table width="957" >
    <tr >
      <td width="172"><b>หัวข้อ : </b></td>
      <td width="900"><input name="titleKnow1" type="text" id="titles" value="<? echo $resEditKnow['title'];?>" size="50"/></td>
    </tr>
    <tr>
      <td><b>รายละเอียดย่อสั้นๆ : </b></td>
      <td><input name="textKnow" type="text" id="texts" value="<? echo $resEditKnow['text_kn'];?>" size="80"/></td>
    </tr>
    <tr>
      <td><b>หมวดหมู่ : </b></td>
   		<td><select name="categoryKnow">
    	<option value="">--</option>
		<? while($dataKn = mysql_fetch_array($resultKnowCate)){?>
              <option value="<?=$dataKn['cate_id']?>" <? echo ($dataKn['cate_id']==$resEditKnow['cate_id'] ? "SELECTED" : "" );?>><? echo $dataKn['cate_name']?></option>
		<? }?>
 		</select></td>
    </tr>
    <tr>
      <td><b>รูปไอคอนความรู้: </b></td>  
      <td><? if( $resEditKnow['picture']){ ?> 
			<img src="images/knowledge/<?=$resEditKnow['picture']?>" />
			<? }else {?>
			<img src="images/knowledge/knowledge_blank.gif"/>
			<? }?><br>
		<input name="imageKnow" type="file" size="50"
			<? if($resEditKnow['picture']){
				echo "disabled";
			   }?>/>
        <input type="checkbox" name="deleteimage" value="1" />
		<input type="hidden" name="oldimage" value="<?=$resEditKnow['picture']?>" />
        ลบรูปภาพ</td>
    </tr>
    <tr>
      <td><b>เนื้อหา : </b></td>
      <td>
	  <textarea name="detailKnow" id="details" cols="50" rows="10"><? echo $resEditKnow['detail'];?></textarea>
	  </td>
    </tr>
  </table>
  <p><br>
    <input type="submit" name="Submit" value="แก้ไขความรู้" />
	<input name="hidAction" id="hidAction" type="hidden" value="Add">
</p>
</form>
<?
			$sqlUppic="select * from knowledge where picture='".$_POST['picture']."' ";
			$resultUppic = mysql_query($sqlUppic,$conn);
			$resUppic = mysql_num_rows($resultUppic);
				
?>

<? }elseif($_GET['action'] == "editknow" && $_GET['addk'] == "edit"){
			if($_POST['deleteimage']) {
			 	$objMaster->deleteFiles("images/knowledge/",$_POST['oldimage'],$_POST['oldimage']);
			 	$imagename=$objMaster->uploadImage("image","images/knowledge/","imageKnow","",$_FILES);
			}else{
				$imagename = $_POST['oldimage'];
			}

		$updateKnow = "UPDATE  knowledge SET title='".$_POST['titleKnow1']."' ,text_kn= '".$_POST['textKnow']."' ,detail='".$_POST['detailKnow']."' ,picture='".$imagename."',date_time='".time()."' WHERE kn_id='".$_POST['id']."'";
			//echo $updateKnow;	
			mysql_query($updateKnow,$conn);  	
			mysql_close($conn);
			unset ($_SESSION['editknow']); 			
?>
<?
  		echo "<script type='text/javascript'>";
        echo "location.href='?name=admin&file=knowledge' ";
		echo "</script>";
   
?>