网页排版总是比设定长。

看见了吗，下面比上面长！

我设置了192，显示是226，这是为什么？
下面是这个表格的代码：
<table width="900" border="0" align="center" cellpadding="0" cellspacing="0" style="padding-top:2px;">
<tr>
<td valign="top"><table width="192" border="0" cellspacing="0" cellpadding="0" style="border:1px #CCCCCC solid;">
<tr>
<td valign="top"><table width="192" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="192" height="24" background="[!--news.url--]deftempimg/top_18.gif"><div align="center">热门信息</div></td>
</tr>
<tr>
<td height="272">[ecmsinfo]9,12,25,1,0,6,0[/ecmsinfo]</td>
</tr>
</table></td>
</tr>
</table></td>
<td valign="top" style="padding-left:7px; padding-right:4px;"><table width="90%" border="0" cellspacing="0" cellpadding="3" style="border:1px #6DD037 solid;">
<tr>
<td align="center"><script src=/d/js/acmsd/thea1.js></script></td>
</tr>
</table>
<table width="100%" border="0" align="center" cellpadding="0" cellspacing="0" style="margin-top:4px;">
<tr>
<td width="440" height="27" background="[!--news.url--]deftempimg/top_23.gif" style="background-repeat:no-repeat;"><table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="88%">&nbsp;&nbsp;&nbsp;新&nbsp;闻&nbsp;动&nbsp;态</td>
<td width="12%"><a href="[!--news.url--]news/">more</a></td>
</tr>
</table></td>
</tr>
<tr>
<td background="[!--news.url--]deftempimg/top_24.gif" style="background-repeat:repeat-y; padding-left:6px; padding-right:6px;">[ecmsinfo]8,1,40,0,12,11,0[/ecmsinfo]
<table width="98%" border="0" align="center" cellpadding="0" cellspacing="0" style="margin-bottom:3px; margin-top:3px; border-bottom:1px #CCCCCC dashed;">
<tr>
<td height="5"></td>
</tr>
</table></td>
</tr>
<tr>
<td background="[!--news.url--]deftempimg/top_24.gif" style="background-repeat:repeat-y; padding-left:6px; padding-right:6px;">[ecmsinfo]8,4,40,1,0,10,0[/ecmsinfo]</td>
</tr>
<tr>
<td><img src="[!--news.url--]deftempimg/top_25.gif" width="440" height="7" /></td>
</tr>
</table></td>
<td valign="top"><table width="250" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="250" height="25" background="[!--news.url--]deftempimg/top_16.gif" style=" background-repeat:no-repeat;"><img src="[!--news.url--]deftempimg/tjjd.gif" width="250" height="25" /></td>
</tr>
<tr>
<td width="226" style=" border-bottom:1px #A6DA5C solid; border-left:1px #A6DA5C solid; border-right:1px #A6DA5C solid; padding-left:5px; padding-right:5px; padding-bottom:3px; padding-top:3px;">[ecmsinfo]3,10,28,0,2,6,0[/ecmsinfo]</td>
</tr>
</table></td>
</tr>
</table>