พอดีจะทำตารางของครู อ่าครับ สร้างมาการแสดงผลไม่ตรงตามตารางสอนจริง

 <? $id_th=$_SESSION['userid'];?>
<?
function ScheduleShow($day)
{
	include("config.php");  
	//$da= if($day=="MON") echo "จันทร์";else if($day=="TUE") echo "อังคาร";else if($day=="WED") echo "พุธ";else if($day=="THU") echo "ฟฤหัส";else if($day=="FRI") echo "ศุกร์";
	echo "<tr><td  align='center'>";
	 if($day=="MON") echo "จันทร์";
	 else if($day=="TUE") echo "อังคาร";
	 else if($day=="WED") echo "พุธ";
	 else if($day=="THU") echo "พฤหัสบดี";
	 else if($day=="FRI") echo "ศุกร์";
	 echo "</td>";
	   
	$con=mysql_connect($host,$user,$pass) or die ("ติดต่อฐานข้อมูลไม่ได้");
	$str="select * from  plans,(SELECT schedule.*,groub.level,groub.room FROM schedule,groub  WHERE schedule.id_group=groub.id_group) AS schedule   where  plans.id_sub=schedule.id_sub and day='$day'  and  id_th='".$_SESSION['userid']."'";
	
	
	
	$result=mysql_query($str,$con);
	$numrow=mysql_num_rows($result);
	$defultStart="08:00:00";
	while($rs=mysql_fetch_array($result))
	{
		
		
		$startpos=$rs[time_start]-$defultStart;
		$hour=$rs[time_end]-$rs[time_start];
	
			if($startpos==0)
			{
?>

 <a href="check.php?id_group=<?=$rs[id_group];?>&id_sub=<?=$rs[id_sub];?>&classroom=<?=$rs[classroom];?>&time_start=<?=$rs[time_start];?>&time_end=<?=$rs[time_end];?>">	<td   colspan="<?=$hour;?>"  align="center"  class="stylebgc"><?=$rs[subjects];?><br /><? if($rs[level]=='vocational') echo 'ปวช.'; else echo 'ปวส.'?><?=$rs[room];?>&nbsp;&nbsp;&nbsp;ห้อง&nbsp;<?=$rs[classroom];?></td></a>
    
<span >
                <?
				$cols+=$hour;
			}
			else if($startpos>0)
			{
				if($cols==0)
				{
					for($i=1;$i<=$startpos;$i++)
					{
						echo '<td>&nbsp;</td>';
						$cols+=1;
				
					}
?>
</span>
<a href="check.php?id_group=<?=$rs[id_group];?>&id_sub=<?=$rs[id_sub];?>&classroom=<?=$rs[classroom];?>&time_start=<?=$rs[time_start];?>&time_end=<?=$rs[time_end];?>">	<td  colspan="<?=$hour;?>"  align="center"  class="stylebgc" ><?=$rs[subjects];?><br /><? if($rs[level]=='vocational') echo 'ปวช.'; else echo 'ปวส.'?><?=$rs[room];?>&nbsp;&nbsp;&nbsp;ห้อง&nbsp;<?=$rs[classroom];?></td></a>
                <span class="style5" >
                <?	
					$cols+=$hour;
				}
				else
				{	

					if(($startpos-$cols)==0)
					{	
?>
                </span>
 <a href="check.php?id_group=<?=$rs[id_group];?>&id_sub=<?=$rs[id_sub];?>&classroom=<?=$rs[classroom];?>&time_start=<?=$rs[time_start];?>&time_end=<?=$rs[time_end];?>">	<td colspan="<?=$hour;?>"  align="center"  class="stylebgc" ><?=$rs[subjects];?><br /><? if($rs[level]=='vocational') echo 'ปวช.'; else echo 'ปวส.'?><?=$rs[room];?>&nbsp;&nbsp;&nbsp;ห้อง&nbsp;<?=$rs[classroom];?></td></a>
<span >
                <?		
						$cols+=$hour;
					}
					else
					{
						$freecols=$startpos-$cols;
						for($i=1;$i<=$freecols;$i++)
						{
							echo  '<td>&nbsp;</td>';
							$cols+=1;
						}
?>
</span>
  <a href="check.php?id_group=<?=$rs[id_group];?>&id_sub=<?=$rs[id_sub];?>&classroom=<?=$rs[classroom];?>&time_start=<?=$rs[time_start];?>&time_end=<?=$rs[time_end];?>">	<td colspan="<?=$hour;?>"  align="center"  class="stylebgc" ><?=$rs[subjects];?><br /><? if($rs[level]=='vocational') echo 'ปวช.'; else echo 'ปวส.'?><?=$rs[room];?>&nbsp;&nbsp;&nbsp;ห้อง&nbsp;<?=$rs[classroom];?></td>
</a>
<span >
                <?	
					$cols=$cols+$hour;
					}
				}
			}
			
		
	}
		$freecols=10-$cols;
		for($i=1;$i<=$freecols;$i++)
		{
				echo  '<td>&nbsp;</td>';
				$cols+=1;
		}
	echo "</tr>";
}
?>
</span>