มีปัญหาในการใช้งาน auto complete ครับ ช่วยดูให้ทีครับ

<?php
session_start();
ob_start();
require_once "config.php";

if($_POST['sID']=='2'){
	if($_POST['course']!=""){
	$Cond = "  AND  post_job LIKE '%".$_POST['course']."%'";
	}
	}

?>
<title>jQuery Autocomplete Plugin</title>
<script type="text/javascript" src="jquery.js"></script>
<script type='text/javascript' src='jquery.autocomplete.js'></script>
<link rel="stylesheet" type="text/css" href="jquery.autocomplete.css" />

<script type="text/javascript">
$().ready(function() {
	$("#course").keyup(function(){
		if($('#sID').val()==""){
			alert("กรุณาเลือกหมวดที่ต้องการค้นหา");
			$('#sID').focus();
			return false;
			}
		//if($('#sID').val()==1){
		//$("#course").autocomplete("get_course_listID.php", {
		//width: 260,
	//	matchContains: true,
//		mustMatch: true,
//		minChars: 0,
//		multiple: true,
//		highlight: false,
//		multipleSeparator: ",",
		//selectFirst: false
	//});
//	}
		if($('#sID').val()==2){
		$("#course").autocomplete("get_course_listName.php", {
		width: 260,
//		matchContains: true,
//		mustMatch: true,
//		minChars: 0,
//		multiple: true,
//		highlight: false,
//		multipleSeparator: ",",
		selectFirst: false
			});
			}
		
		
		});
	
});
function Fncselect(){
	if($('#sID').val()==""){
		alert('กรุณาเลือกหมวดที่ต้องการค้นหา');
		$('#sID').focus();
		}
	}
</script>

<?php
$sql = "select * from job_post where  1=1  ".$Cond."";
$Query = mysql_query($sql);

?>
<div id="content">
	<form autocomplete="off" method="post" action="#">
	  
			ระบุงานที่ต้องการค้นหา <label>:</label>
          
			<input type="text" name="course" id="course" value="<?php echo $_POST['course'];?>" />
			<!--input type="button" value="Get Value" /-->
		
		<input type="submit" value="search" />

  </form></div></center>
  
  
  
          <center> <table width="34%" border="1">
        <tr bgcolor="#CCCCCC">
        <td width="23%" align="center" nowrap>ลำดับ</td>
          <td width="61%" align="center" nowrap>สถานประกอบการ</td>
            <td width="61%" align="center" nowrap>ตำแหน่งงาน</td>
              <td width="61%" align="center" nowrap>ที่อยู่</td>
           <td width="61%" align="center" nowrap>รายละเอียด</td>
        </tr>
        <?php 
		$i=1;
		while($recQuery = mysql_fetch_array($Query)) {
			?>
           <tr>
        <td align="center" nowrap><?php echo $i;?></td>
        <td align="left" nowrap><?php echo $recQuery['post_company'];?></td>
        <td align="left" nowrap><?php echo $recQuery['post_job'];?></td>
         <td align="left" nowrap><?php echo $recQuery['ad_company'];?></td>
          <td align="left" nowrap><?php echo $recQuery['detail'];?></td>
          
        </tr>   
		   <?php 
		   $i++;
		   }?>
        
  </table>
  </center>

<?php
require_once "config.php";
$q = strtolower($_GET["q"]);
if (!$q) return;

$sql = "select DISTINCT post_job as post_job from job_post where post_job LIKE '%$q%'";
$rsd = mysql_query($sql);
while($rs = mysql_fetch_array($rsd)) {
	$cname = $rs['post_job'];
	echo "$cname\n";
}
?>

<?php
$host_name = 'localhost';
$user_name = 'root';
$pass_word = 'wattana';
$database_name = 'jobfair';

$conn = mysql_connect($host_name, $user_name, $pass_word) or die ('Error connecting to mysql');
mysql_select_db($database_name);

mysql_query("SET character_set_results=utf8");


?>