เมื่อมี text ที่กำหนด onblur อยู่ 2 text ไม่สามารถกด enter ได้ เพราะอะไรหรอคับเเล้วจะแก้ไขยังไงหรอคับถึงจะกด enter ได้

<form id="form3" name="form3" method="post" action="edit_item_order.php" >
      <tr>
       <td bgcolor="#BECDBE"><? echo $sumlist;?><input name="numf" type="hidden" value="<? echo $numf;?>" /></td>
        <td bgcolor="#DFE6DF"><? echo $barcode_item;?><input name="barcode_item" type="hidden" value="<? echo $barcode_item;?>" /></td>
        
        <td bgcolor="#DFE6DF"><h6>&nbsp;<? echo $name_item ;?></h6><input name="UserID" type="hidden" value="<? echo $UserID;?>" /></td> <td bgcolor="#DFE6DF"><? echo $color;?></td>
          <td bgcolor="#DFE6DF"><? echo $size;?></td>
        <td bgcolor="#DFE6DF">
		
		 <input name="discout" type="text" id="discout" value="<? echo $discout_item;?>" size="1" style="background:  #F2F2F2" onblur="document.forms[<? echo $sumlist;?>+1].submit()" onkeypress = check_number(); /> % 
		</td>
        <td bgcolor="#DFE6DF"><input name="number_item_order" type="hidden" value="<? echo $number_item;?>" /><input name="number_order_edit" type="text" id="number_order_edit" size="1" value="<? echo $number_item;?>" onblur="document.forms[<? echo $sumlist;?>+1].submit()" style=" font-size:12px;text-align:center;background:#F2F2F2;" onkeypress = check_number();  /></td>
        <td bgcolor="#DFE6DF"><? echo number_format($sell_price);?></td>
        <td bgcolor="#DFE6DF"><? echo $sumprice;?></td>
        <td bgcolor="#DFE6DF"><a href="del_item_order.php?numf=<? echo $numf;?>&discout=<? echo $discout_item;?>&barcode_item=<? echo $barcode_item;?>" ><img src="images/b_drop.png" width="16" height="16" /></a></td>
      </tr></form>