请教：我做了一个滚动显示图片的代码，放在主页文件中．但放置位置始终不对，不能达到显示在页面底端的目的，麻烦各位帮忙看看吧！急！
在主页index.asp中，我将滚动显示图片的代码include进来，但现的问题是：图片将原本显示集团单位信息的内容覆盖了
<td height="14" colspan="3" valign="top">
                                                        <P><FONT size="2" color="#330066"><STRONG></STRONG></FONT>&nbsp;</P>
                                                        <P><FONT color="#330066" size="2"><STRONG>后勤集团单位:.</STRONG></FONT></P>
                                                 </td>
                                          </tr>
                                          <tr>
                                                 <td height="168" width="19">&nbsp;</td>
                                                 <td height="168" width="3">&nbsp;</td>
                                                 <td valign="top" height="168">
                                                        <table width="100%" border="1" cellpadding="0" cellspacing="0" bordercolor="#cc99cc" height="140"> <!--DWLayoutTable-->
                                                               <tr>
                                                                      <td>
                                                                      
                                                                             <table width="100%" border="0" height="100%">
                                                  <%showintroduction() %>
                                                                             </table>
                                                                             <tr>
                                                 
                                          </tr>
                                                                             <!--#include file="gundong.html"-->
                                                                      </td>
                                                               </tr>
                                                        </table>
                                                 </td>
                                          </tr> <!--       -->
                                          
                                   </table>
                                   <!--#include file="bottom.htm"--></td>
                                   
                     </tr>
                     
              </table>
</html>