图片排列问题

从数据库读出的图片路径显示图片,想每行排3个图片,然后另起一行,怎能么排!
for ($i=0;$i<31;$i=$i+3)
{
    echo $i;
    echo $i+1;
    echo $i+2;
    echo "<br />";    
}这种方法不行，我是在表格里的td里再放一个表格，
如果循环td里的表格，是一直竖着排下去！
如果循环td，但是td的表格不会换行排列的，会横向拉的很长!注意：图片是放在td里的表格里的，因为还要显示图片的一些信息，只能td里再放一个表格把图片和图片信息放里面了！现在只要设置每行显示图片的个数，比如设置2个，就是每行显示2个图片和图片信息，然后另起一行，
比如设置3个，就是每行显示3个图片和图片信息，然后另起一行，依此类推！不管什么方法，只要显示如上所述就可以了,我谢! <table width="540" height="127" border="0" cellpadding="0" cellspacing="0" >
        <tr>
          <td width="114">&nbsp;</td>
          <td width="138">&nbsp;</td>
          <td width="128">&nbsp;</td>
          <td width="160">&nbsp;</td>
        </tr>
        <tr>
          <td
  <?
while($arr=mysql_fetch_array($result))
{ $j++;
  $username=$arr['username'];
  $email=$arr['email'];
  
        
  ?> 
           
          <?
           if($j%3!=0){           ?>
          
       
           <td colspan="4" align="left">
           
           
            <table width="250" border="0" cellpadding="0" cellspacing="0" onmouseover=this.style.backgroundColor='#FFC1C1' onmouseout=this.style.backgroundColor='' >
              <tr  >
                <td width="117" rowspan="7"><img src="../image/she_user.png" alt="" width="114" height="128"></td>
                <td width="148">&nbsp;</td>
              </tr>
              <tr>
           <td><font size="2">用戶名</font><font size="2" color="#FF6666"><b><? echo $username; ?></b></font></td>
              </tr>
              <tr>
                <td>&nbsp;</td>
              </tr>
              <tr>
                <td>&nbsp;</td>
              </tr>
              <tr>
                <td><font size="2">郵件</font><font size="2" color="#FF6666"><? echo $email; ?></font></td>
              </tr>
              <tr>
                <td>&nbsp;</td>
              </tr>
              <tr>
                <td>
                  <font size="2" color="#FF6666">
                  <a onClick="location.href='user.php?action=update&id=<?=$arr['id']?>';">修改</a> | <a onClick="if(confirm('确定删除吗!')==true){location.href='usermange.php?action=del&id=<?=$arr['id']?>';}">刪除</a>
                  </font>
                </td>
              </tr>
              <tr>
                <td colspan="2"><img src="../image/line_02.gif" width="265" height="6"></td>
              </tr>
            </table>
            
           </td>
               
           
            <? 



}else if(($j>=3)&&($j%3==0||$j%4==0)){ 
           ?>      <tr>    
 <td colspan="4" align="left">
 
            <table width="250" border="0" cellpadding="0" cellspacing="0" onmouseover=this.style.backgroundColor='#FFC1C1' onmouseout=this.style.backgroundColor='' >
              <tr  >
                <td width="117" rowspan="7"><img src="../image/she_user.png" alt="" width="114" height="128"></td>
                <td width="148">&nbsp;</td>
              </tr>
              <tr>
               <td><font size="2">用戶名</font><font size="2" color="#FF6666"><b><? echo $username; ?></b></font></td>
              </tr>
              <tr>
                <td>&nbsp;</td>
              </tr>
              <tr>
                <td>&nbsp;</td>
              </tr>
              <tr>
                <td><font size="2">郵件</font><font size="2" color="#FF6666"><? echo $email; ?></font></td>
              </tr>
              <tr>
                <td>&nbsp;</td>
              </tr>
              <tr>
                <td>
                  <font size="2" color="#FF6666">
                  <a onClick="location.href='user.php?action=update&id=<?//=$arr['id']?>';">修改</a> | <a onClick="if(confirm('确定删除吗!')==true){location.href='usermange.php?action=del&id=<?//=$arr['id']?>';}">刪除</a>
                  </font>
                </td>
              </tr>
              <tr>
                <td colspan="2"><img src="../image/line_02.gif" width="265" height="6"></td>
              </tr>
            </table>
          
          
          </td>  
          </tr>
               <? } ?>
 
            
            <? } ?>
            </td>
           </tr>
        
      </table>