รบกวนดู code ให้หน่อยค่ะ Error Query [SELECT * FROM building authority WHERE

<form name="frmSearch" method="get" action="<?=$_SERVER['SCRIPT_NAME'];?>">
  <table width="599" border="1">
    <tr>
      <th>Keyword
      <input name="txtKeyword" type="text" id="txtKeyword" value="<?=$_GET["txtKeyword"];?>">
      <input type="submit" value="Search"></th>
    </tr>
  </table>
</form>
<?
if($_GET["txtKeyword"] != "")
	{
	$objConnect = mysql_connect("localhost","root","123456") or die("Error Connect to Database");
	$objDB = mysql_select_db("vehicles");
	// Search By Name or Email
	$strSQL = "SELECT  * FROM building authority   WHERE (Au_Bu_Name LIKE '%".$_GET["txtKeyword"]."%' or ID_Autho LIKE '%".$_GET["txtKeyword"]."%' )  ";
	$objQuery = mysql_query($strSQL) or die ("Error Query [".$strSQL."]");
	?>
<table width="600" border="1">
  <tr>
    <th width="91"> <div align="center">ID </div></th>
    <th width="98"> <div align="center">Name </div></th>
    <th width="198"> <div align="center">Lastname </div></th>
    <th width="97"> <div align="center">Username </div></th>
    <th width="59"> <div align="center">Password</div></th>
    <th width="71"> <div align="center">Del</div></th>
  </tr>
  <?
	while($objResult = mysql_fetch_array($objQuery))
	{
	?>
  <tr>
    <td><div align="center">
      <?=$objResult["ID_Autho"];?>
    </div></td>
    <td><?=$objResult["Au_Bu_Name"];?></td>
    <td><?=$objResult["Au_Bu_LN"];?></td>
    <td><div align="center">
      <?=$objResult["User_Au_Bu"];?>
    </div></td>
    <td align="right"><?=$objResult["Pass_Au_Bu"];?></td>
  </tr>
  <?
	}
	?>
</table>
<?
	mysql_close($objConnect);
}
?>