一个很通用的javascript的下拉菜单
类别: JavaScript教程 
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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