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 这是css文件css.css的内容 .close{visibility:hidden;
 cellPadding=0; cellSpacing=0 ;
 height:21px;font:9pt;text-align:center
 
 }
 .open{
 visibility:visible;
 cellPadding=0; cellSpacing=0 ;
 height:24px;font:9pt;text-align:center;
 BORDER-TOP: #000000 1px solid;
 BORDER-BOTTOM: #000000 1px solid
    }.openleft{
 visibility:visible;
 cellPadding=0; cellSpacing=0 ;
 height:24px;font:9pt;text-align:center;
 BORDER-TOP: #000000 1px solid;
 BORDER-LEFT:#000000 1px solid ;
 BORDER-BOTTOM: #000000 1px solid
 }
 .openright{
 visibility:visible;
 cellPadding=0; cellSpacing=0 ;
 height:24px;font:9pt;text-align:center;
 BORDER-TOP: #000000 1px solid ;
 BORDER-RIGHT:#000000 1px solid ;
 BORDER-BOTTOM: #000000 1px solid
 }
 利用鼠标对象和表格的属性很容易实现下拉菜单! <HTML><HEAD><TITLE>最后还是笑笑/情感</TITLE><META http-equiv=Content-Type content="text/html; charset=gb2312">
 <LINK href="CssFiles/css.css"  type=text/css rel=stylesheet>
 <BODY bgColor=#dedfde leftMargin=0 marginwidth="0" topmargin="0">
 <TABLE width="80%"  align="center" cellPadding=0 cellSpacing=0  id="thelast" class=bian>
 <TR  height="67">
 <TD valign="top" width="9%" align=center >
 <table width="100%" class=close
 onMouseOut="this.style.visibility='hidden'";
 onMouseOver="this.style.visibility='visible'" cellpadding="0" cellspacing="0">
 <tr>
 <td valign="center" title="本人本站的介绍" background="pic/back.jpg" height=23 class=openleft><a href='#'> 笑 笑</a></td>
 </tr>
 <tr>
 <td valign="center" background="pic/back2.jpg"><a href="bzjs.html"  target="_blank">本 站</a></td>
 </tr>
 <tr>
 <td valign="center" background="pic/back2.jpg"><a href="grjj.html"  target="_blank">本 人</a></td>
 </tr>
 <tr>
 <td valign="center" background="pic/back2.jpg"><a href="jl.html"  target="_blank">简 历</a></td>
 </tr>
 </table>
 </TD></TR> </TABLE> </BODY> </HTML> 
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