อัพโหลดรูปภาพและใส่ข้อมูล โดย Submit Form แบบไม่เปลี่ยนหน้า ต้องทำไงค่ะ

<form action="save_factorytour.php" name="frmMain" method="post" target="iframe_target">
	<iframe id="iframe_target" name="iframe_target" src="#" style="width:0;height:0;border:0px solid #fff;"></iframe>
  <script language="JavaScript">
		function showResult(result)
		{
			if(result==1)
			{
				document.getElementById("divResult").innerHTML = "<font color=green> Save successfully! </font>  <br>";
			}
			else
			{
				document.getElementById("divResult").innerHTML = "<font color=red> Error!! Cannot save data </font> <br>";
			}
		}
	</script>
	<div id="divResult"></div>
  <table width="800" border="1">
	  <th width="224" class="style9"><div align="left"><span class="style9">สถาบัน  / หน่วยงาน / องค์กร *:</span></div></th>
		<td width="560"><input name="txtAgencies" type="text" id="txtAgencies" size="40" /></td>
		</tr>
    <tr>
    <tr>
	  <th class="style9"><div align="left"><span class="style9">จำนวนผู้เยี่ยมชม  *: </span></div></th>
	  <td><input name="txtNum" type="text" id="txtNum" /></td>
	  </tr>
    <tr>
	  <th class="style9"><div align="left"><span class="style9">วัตถุประสงค์ของการเยี่ยมชม *:</span></div></th>
	  <td><textarea name="txtObjective" cols="40" id="txtObjective"></textarea></td>
	  </tr>
    <tr>
	  <th class="style9"><div align="left"><span class="style9">ชื่อและนามสกุล  *: </span></div></th>
	  <td><input name="txtName" type="text" id="txtName" size="40" /></td>
	  </tr>
    <tr>
	  <th class="style9"><div align="left"><span class="style9">เบอร์โทรติดต่อ *:</span></div></th>
	  <td><input name="txtTel" type="text" id="txtTel" size="40" /></td>
	  </tr>
    <tr>
	  <th class="style9"><div align="left"><span class="style9">อีเมล *:</span></div></th>
	  <td><input name="txtMail" type="text" id="txtMail" size="40" /></td>
	  </tr>
    <tr>
      <th class="style9"><div align="left"><span class="style9">ที่อยู่ *:</span></div></th>
      <td><textarea name="txtAddress" cols="40" id="txtAddress"></textarea></td>
    </tr>
    <tr>
      <th class="style9"><div align="left"><span class="style9">เอกสารขอเยี่ยมชมโรงงาน (ถ้ามี)  : </span></div></th>
      <td><input type="file" name="filUpload" /></td>
    </tr>
  </table>
	  <input type="submit" name="submit" value="submit">
</form>

<meta http-equiv=Content-Type content="text/html; charset=utf-8">
<?
		echo "Copy/Upload Complete<br>";
	$objConnect = mysql_connect("localhost","root","root") or die("Error Connect to Database");
	$objDB = mysql_select_db("aaa_web");
	mysql_query("SET NAMES UTF8");
$strSQL = "INSERT INTO aaaa ";
$strSQL .="(date,Agencies,Num,Objective,Name,Tel,Mail,Address,FilesName) ";
$strSQL .="VALUES ";
$strSQL .="('".date("Y-m-d H:i:s")."','".$_POST["txtAgencies"]."','".$_POST["txtNum"]."','".$_POST["txtObjective"]."' ";
$strSQL .=",'".$_POST["txtName"]."','".$_POST["txtTel"]."','".$_POST["txtMail"]."','".$_POST["txtAddress"]."','".$_FILES["filUpload"]["name"]."') ";
$objQuery = mysql_query($strSQL);
if($objQuery)
{
	//echo "<script>alert('Save successfully!');</script>";
	echo "<script>window.top.window.showResult('1');</script>";
}
else
{
	//echo "<script>alert('Error! Cannot save data');</script>";
	echo "<script>window.top.window.showResult('2');</script>";
}
mysql_close($objConnect);
?>

	if(copy($_FILES["filUpload"]["tmp_name"],"myfile/".$_FILES["filUpload"]["name"]))