게시판에서 dhtml로 테이블작성했는데 공간을 많이 나두고 바닥에깔리는데 원인이 무엇일까요?

엔터가 들어가던지.. 암튼 <br>이 여러번 들어가 잇네요.

<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><table valign="top" cellpadding="0" cellspacing="0" border="1" width="100%">  
<tbody>
<tr>    
<td width="16%"><center><strong> 거래처</strong></center></td>    
<td width="20%"><center><strong>품명</strong></center></td>    
<td width="16%"><center><strong>절수</strong></center></td>    
<td width="16%"><center><strong>톰슨수량</strong></center></td>    
<td width="8%"><center><strong>벤딩</strong></center></td>    
<td width="8%"><center><strong>접착구분</strong></center></td>    
<td width="16%"><center><strong>비고</strong></center></td>  </tr> 
<tr>    
<td width="16%"><center><strong> 거래처</strong></center></td>    
<td width="20%"><center><strong>품명</strong></center></td>    
<td width="16%"><center><strong>절수</strong></center></td>    
<td width="16%"><center><strong>톰슨수량</strong></center></td>    
<td width="8%"><center><strong>벤딩</strong></center></td>    
<td width="8%"><center><strong>접착구분</strong></center></td>    
<td width="16%"><center><strong>비고</strong></center></td>  </tr>       </tbody></table>