问一个DIV+CSS问题?
<!DOCTYPE   HTML   PUBLIC    "-//W3C//DTD   HTML   4.01   Transitional//EN "    "http://www.w3c.org/TR/1999/REC-html401-19991224/loose.dtd ">  
  <!--   saved   from   url=(0027)http://localhost/MyWeb/BBS/   -->  
  <HTML   xmlns= "http://www.w3.org/1999/xhtml ">  <HEAD>  <TITLE> xx论坛 </TITLE>  
  <META   http-equiv=Content-Type   content= "text/html;   charset=gb2312 ">  <LINK    
 href= "MyCss.css "   type=text/css   rel=stylesheet>    
  <META   content= "MSHTML   6.00.3790.2858 "   name=GENERATOR>  </HEAD>  
  <BODY>  
  <DIV   class=HEADER>  
  <UL>  
        <LI   onclick=javascript:> 博客      </LI>  
        <LI   onclick=javascript:Default()> 默认版面 |     </LI>  
        <LI   onClick= "javascript:location.href= 'Search.html ' "> 资源搜索 |     </LI>  
        <LI   onClick= "location.href= 'Register.html ' "> 用户注册 |     </LI>  
        <LI   onClick= "location.href= 'Register.html ' "> 用户登陆 |     </LI>  
        <LI   onClick= "location.href= '../Index1.html ' "> MyWeb首页 |     
  </LI>  </UL>  </DIV>  
  <DIV   class=MODULE   id=1>  
  <DIV   class=MODULE_TITLE   onMouseDown= "DragStart(event, '1 ') "   id=1_Title>  <SPAN    
 class=TITLE_LEFT> ≡商友俱乐部≡ </SPAN>     <SPAN   class=TITLE_RIGHT>  <IMG   id=1_Lock   title=锁定    
 style= "CURSOR:   pointer "   onClick= "ck( '1 ') "   height=13   src= "xx论坛_files/unlock.gif "    
 width=13>     <IMG   id=1_Size   title=最小化   style= "CURSOR:   pointer "   onClick= "cm( '1 ') "    
 height=13   src= "xx论坛_files/max.gif "   width=13>     <IMG   style= "CURSOR:   pointer "    
 onclick= "ce( '1 ') "   height=13   src= "xx论坛_files/icon_close.gif "   width=13>     
  </SPAN>  </DIV>  
  <DIV   class=MODULE_CONTENT   id=1_Content>  
  <DIV   class=FORUMLIST_TITLE>  
  <UL>  
        <LI   style= "PADDING-LEFT:   70px;   WIDTH:   700px;   TEXT-ALIGN:   left "> 论坛    </LI>  
        <LI   style= "WIDTH:   40px "> 主题    </LI>  
        <LI   style= "WIDTH:   40px "> 贴数    </LI>  
        <LI   style= "WIDTH:   90px "> 最后发表    </LI>  
        <LI   style= "WIDTH:   88px "> 版主    </LI>  </UL>  </DIV>  
  <DIV   class=FORUMLIST>  
  <UL>  
        <LI    
       style= "PADDING-RIGHT:   10px;   PADDING-LEFT:   10px;   WIDTH:   30px;   PADDING-TOP:   4px ">  <IMG    
       title=有新的贴子   height=24   src= "xx论坛_files/forumNew.gif "   width=22>     </LI>  
        <LI &