CSS.menu {font-family: arial, sans-serif; width:750px; position:relative; margin:0; font-size:11px; margin:50px 0;}.menu ul li a, .menu ul li a:visited {display:block; text-decoration:none; color:#000;width:104px; height:20px; text-align:center; color:#fff; border:1px solid #fff; background:#710069; line-height:20px; font-size:11px; overflow:hidden;}.menu ul {padding:0; margin:0;list-style-type: none; }.menu ul li {float:left; margin-right:1px; position:relative;}.menu ul li ul {display: none;}.menu ul li:hover a {color:#fff; background:#36f;}.menu ul li:hover ul {display:block; position:absolute; top:21px; left:0; width:105px;}.menu ul li:hover ul li a.hide {background:#6a3; color:#fff;}.menu ul li:hover ul li:hover a.hide {background:#6fc; color:#000;}.menu ul li:hover ul li ul {display: none;}.menu ul li:hover ul li a {display:block; background:#ddd; color:#000;}.menu ul li:hover ul li a:hover {background:#6fc; color:#000;}.menu ul li:hover ul li:hover ul {display:block; position:absolute; left:105px; top:0;}.menu ul li:hover ul li:hover ul.left {left:-105px;}
实现代码：
<div class="menu"><ul><li><a class="hide" href="">68ecshop</a><!–[if lte IE 6]><a href="../menu/index.html">DEMOS<table><tr><td><![endif]–> <ul> <li><a href="" title="The zero dollar ads page">zero dollars</a></li> <li><a href="" title="Wrapping text around images">wrapping text</a></li> <li><a href="" title="Styling forms">styled form</a></li> <li><a href="" title="Removing active/focus borders">active focus</a></li> <li><a class="hide" href="" title="">68ecshop教程 ></a> <!–[if lte IE 6]> <a class="sub" href="../menu/hover_click.html" title="Hover/click with no active/focus borders">HOVER/CLICK > <table><tr><td> <![endif]–> <ul> <li><a href="" title="Styling forms">视频教程</a></li> <li><a href="" title="Removing active/focus borders">图文教程</a></li> </ul> <!–[if lte IE 6]> </td></tr></table> </a> <![endif]–> </li> <li><a href="" title="Multi-position drop shadow">shadow boxing</a></li> <li><a href="" title="Image Map for detailed information">image map</a></li> <li><a href="" title="fun with background images">fun backgrounds</a></li> <li><a href="" title="fade-out scrolling">fade scrolling</a></li> <li><a href="" title="em size images compared">em sized images</a></li> </ul><!–[if lte IE 6]></td></tr></table></a><![endif]–></li><li><a class="hide" href="index.html">MENUS</a><!–[if lte IE 6]><a href="index.html">MENUS<table><tr><td><![endif]–> <ul> <li><a href="" title="a coded list of spies">spies menu</a></li> <li><a href="" title="a horizontal vertical menu">vertical menu</a></li> <li><a href="" title="an enlarging unordered list">enlarging list</a></li> <li><a href="" title="an unordered list with link images">link images</a></li> <li><a href="" title="non-rectangular links">non-rectangular</a></li> <li><a href="" title="jigsaw links">jigsaw links</a></li> <li><a href="" title="circular links">circular links</a></li> </ul><!–[if lte IE 6]></td></tr></table></a><![endif]–></li><li><a class="hide" href="">LAYOUTS</a><!–[if lte IE 6]><a href="../layouts/index.html">LAYOUTS<table><tr><td><![endif]–> <ul> <li><a href="" title="Cross browser fixed layout">Fixed 1</a></li> <li><a href="" title="Cross browser fixed layout">Fixed 2</a></li> <li><a href="" title="Cross browser fixed layout">Fixed 3</a></li> <li><a href="" title="Cross browser fixed layout">Fixed 4</a></li> <li><a href="" title="A simple minimum width layout">minimum width</a></li> </ul><!–[if lte IE 6]></td></tr></table></a><![endif]–></li><li><a class="hide" href="">BOXES</a><!–[if lte IE 6]><a href="../boxes/index.html">BOXES<table><tr><td><![endif]–> <ul> <li><a href="" title="a coded list of spies">spies menu</a></li> <li><a href="" title="a horizontal vertical menu">vertical menu</a></li> <li><a href="" title="an enlarging unordered list">enlarging list</a></li> <li><a href="" title="an unordered list with link images">link images</a></li> <li><a href="" title="non-rectangular links">non-rectangular</a></li> <li><a href="" title="jigsaw links">jigsaw links</a></li> <li><a href="" title="circular links">circular links</a></li> </ul><!–[if lte IE 6]></td></tr></table></a><![endif]–></li><li><a class="hide" href="">MOZILLA</a><!–[if lte IE 6]><a href="../mozilla/index.html">MOZILLA<table><tr><td><![endif]–> <ul> <li><a href="" title="A drop down menu">drop down menu</a></li> <li><a href="" title="A cascading menu">cascading menu</a></li> <li><a href="" title="Using content:">content:</a></li> <li><a href="" title=":hover applied to a div">mozzie box</a></li>
耿耿于怀着过去和忐忑不安着未来的人，也常常挥霍无度着现在。
