ช่วยดูโค๊ต ปุ่มคำสั่งให้อัพเดทข้อมูลใน database ครับ

<?php
include("connectDB.php");
  $sql = "select * from visitor_idcard WHERE TimeOut=''";
  $rel = mysql_query($sql);
  if(!$rel)
  {
    echo "no".mysql_error();
  }
  else
  {
    echo "<font color=#6633FF size=4>บุคคลที่ยังอยู่ในโรงงาน</font><font color=red></font><BR>&nbsp";
    echo "<table width=100% border=1 bordercolor=#FF9933 cellpadding cellspacing=3 align=center>";
    echo "<tr bgcolor=#FFFF33>";
    echo "<td align=center width=10%>ID Card</td><td align=center width=15%>ชื่อ สกุล</td><td align=center width=5%>เลขบัตรผ่าน</td><td align=center width=5%>ทะเบียนรถ</td><td align=center width=10%>ผู้ติดต่อ</td><td align=center width=15%>ติดต่อเรื่อง</td><td align=center width=10%>เวลาเข้า</td><td align=center width=15%>ชื่อบริษัท</td><td align=center width=10%>วันที่</td><td align=center width=10%>บันทึกออก</td>";
    echo "</tr>";
    while($rs = mysql_fetch_array($rel))
    {
        $id = $rs[PassID];
        $name = $rs[NameVisitor];
        $idcard = $rs[IdCard];
        $idcar = $rs[IdCar];
        $nameemployer = $rs[NameEmployer];
        $purpose = $rs[PurPose];
        $timein = $rs[TimeIN];
        $description = $rs[Description];
        $date = $rs[Date];
    echo "<tr>";
    echo"<td  align=center>&nbsp;$id</td>
         <td  align=center>&nbsp;$name</td>
         <td  align=center>&nbsp;$idcard</td>
         <td  align=center>&nbsp;$idcar</td>
         <td  align=center>&nbsp;$nameemployer</td>
         <td  align=center>&nbsp;$purpose</td>
         <td  align=center>&nbsp;$timein</td>
         <td  align=center>&nbsp;$description</td>
         <td  align=center>&nbsp;$date</td>
         <td>
         <input type='submit' name='action' value='Update'/>
         <input type='hidden' name='id' value=$id/>";
    echo "</td></tr>";
    }
    echo "</table>&nbsp";
    echo "<hr color=\"#FF0033\">";
  }
if ($_POST["action"] && $_POST["id"]) 
    {
      if ($_POST["action"] == 'Update') 
	  {
         mysql_query("UPDATE visitor_idcard SET TimeOut = CURRENT_TIME
         WHERE PassID = '"$_POST["id"]"' 
         AND TimeOut = '';" );
      }
    }
?>