纯CSS实现的导航菜单，带有多级下拉列表功能
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在网页<head>区添加以下代码
<style type="text/css">
#backgroundHolder {width:750px; height:440px; padding-top:10px; background:url(ulmultitwo/photo.jpg); margin:0 auto;}
/* ---------------------------------------------------------------------------- */
/* default styling */
.nav,
.nav ul{list-style-type:none; margin:0; padding:0;}
.nav a {text-decoration:none;}
.nav {font-family: arial, sans-serif; font-size:12px; width:650px; margin:0 auto;}
/* style the links */
/* needs a background for IE6 - can be a color or a transparent gif */
.nav a {background:url(ulmultitwo/tab2.png);}
/* style the <b> element so that is does not affect the size of the link */
.nav a b {font-weight:normal; display:block; padding:5px 10px 10px 10px; color:#fff;}
.nav a:hover b {color:#000; cursor:pointer;}
.nav .fly .main b {background:url(ulmultitwo/arrow.gif) no-repeat 105px 9px;}
.nav .down b {background:url(ulmultitwo/arrow2.gif) no-repeat 103px 11px;}
.nav .right ul b {text-align:right;}
.nav .right ul .main b {background:url(ulmultitwo/arrow3.gif) no-repeat 10px 9px; text-align:right;}
/* HEIGHT */
.nav ul ul {top:-30px;} /* position the top of the flyout sub menus */
/* WIDTH change this WITH CARE to suit your requirements */
/*set the link width here*/
.nav .drop,
.nav a {width:120px;}
.nav ul li {max-width:120px;} /* fix for IE8 */
/* set the left flyout position here */
.nav ul ul {left:120px;}
/* set the right flyout position here */
.nav li.right ul ul {left:auto; right:120px;}
/* make this WIDTH - 1px */ /* or WIDTH - 0.063em if using em sizing */
.nav a {margin-right:-119px;}
/* ---------------------------------------------------------------------------- */
/* DO NOT CHANGE ANYTHING BELOW */
.nav li {float:left;} /* fixes several IE related bugs, and allows for clearing */
.nav ul {float:left; position:relative; z-index:20;} /* necessary for float drop and to stack the <ul>s */
.nav ul li {clear:left;} /* must clear the floated list item inside sublist */
.nav a {position:relative; display:block;} /* needs to have a position, to be above the rest */
.nav a.main {float:left; /* necessary for float drop */
margin-top:10000px;} /* bring the top level links back into view */
.nav .drop,
.nav .fly {margin-top:-10000px;} /* hide the sub links and their containers, opera has low upper limits */
.nav ul {margin-bottom:-5000px;} /* avoid any interaction between the subs, can be any large size */
/* The bit that does ALL the work to bring the sub menus into view */
.nav a:hover,
.nav a:focus,
.nav a:active {margin-right:0; z-index:10; outline:0;}
.nav a:hover b,
.nav a:focus b,
.nav a:active b {color:#000}
/* OPERA fix */
.nav ul:hover,
.nav ul ul:hover {clear:left;} /* to stop intermittent sub link :hover problems */
/* ---------------------------------------------------------------------------- */
</style>
<!--[if lte IE 7]>
<style type="text/css">
/* bug fixes for IE7 and lower - DO NOT CHANGE */
.nav .fly {width:99%;} /* make each flyout 99% of the prevous flyout */
a, a:hover, a:active, a:focus {} /* requires a blank style for :active to stop it being buggy */
.nav a {background:none; cursor:pointer; filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='ulmultitwo/tab2.png', sizingMethod='scale');
}
</style>
<![endif]-->
在网页<body>区添加以下代码
<div id="backgroundHolder"> <ul class="nav"> <li class="drop"><a class="main" href="#url"><b>Home</b></a></li> <li class="drop"><a class="main down" href="#url"><b>Equipment</b></a> <ul class="sub1"> <li class="fly"><a class="main" href="#url"><b>Cameras</b></a> <ul> <li><a href="#url"><b>Film Type</b></a></li> <li><a href="#url"><b>Compact</b></a></li> <li><a href="#url"><b>Polaroid</b></a></li> <li><a href="#url"><b>Digital</b></a></li> <li class="fly"><a class="main" href="#url"><b>Digital SLR</b></a> <ul> <li><a href="#url"><b>Canon</b></a></li> <li><a href="#url"><b>Nikon</b></a></li> <li><a href="#url"><b>Panasonic</b></a></li> <li><a href="#url"><b>Kodak</b></a></li> </ul> </li> <li><a href="#url"><b>Second Hand</b></a></li> </ul> </li> <li class="fly"><a class="main " href="#url"><b>Video Cameras</b></a> <ul> <li class="fly"><a class="main" href="#url"><b>Latest Models</b></a> <ul> <li><a href="#url"><b>Nikon</b></a></li> <li><a href="#url"><b>Panasonic</b></a></li> <li><a href="#url"><b>Canon</b></a></li> <li><a href="#url"><b>Pentax</b></a></li> <li><a href="#url"><b>Minolta</b></a></li> </ul> </li> <li><a href="#url"><b>Special Offers</b></a></li> <li><a href="#url"><b>Professional</b></a></li> </ul> </li> <li class="fly"><a class="main" href="#url"><b>Lenses</b></a> <ul> <li class="fly"><a class="main" href="#url"><b>Digital</b></a> <ul> <li><a href="#url"><b>Standard</b></a></li> <li><a href="#url"><b>Telephoto</b></a></li> <li><a href="#url"><b>Wide Angle</b></a></li> <li class="fly"><a class="main" href="#url"><b>Zoom</b></a> <ul> <li><a href="#url"><b>Nikon</b></a></li> <li><a href="#url"><b>Pentax</b></a></li> <li><a href="#url"><b>Minolta</b></a></li> <li><a href="#url"><b>Panasonic</b></a></li> </ul> </li> <li class="fly"><a class="main" href="#url"><b>Macro</b></a> <ul> <li><a href="#url"><b>Panasonic</b></a></li> <li><a href="#url"><b>Minolta</b></a></li> <li><a href="#url"><b>Pentax</b></a></li> <li><a href="#url"><b>Canon</b></a></li> <li><a href="#url"><b>Nikon</b></a></li> </ul> </li> <li><a href="#url"><b>Fisheye</b></a></li> <li><a href="#url"><b>x2 converters</b></a></li> </ul> </li> <li class="fly"><a class="main" href="#url"><b>Standard SLR</b></a> <ul> <li><a href="#url"><b>Canon</b></a></li> <li><a href="#url"><b>Nikon</b></a></li> <li><a href="#url"><b>Panasonic</b></a></li> <li><a href="#url"><b>Pentax</b></a></li> <li><a href="#url"><b>Minolta</b></a></li> </ul> </li> <li><a href="#url"><b>Cases</b></a></li> <li class="fly"><a class="main" href="#url"><b>Large Format</b></a> <ul> <li><a href="#url"><b>Hasselblad</b></a></li> <li><a href="#url"><b>Arca-Swiss</b></a></li> <li><a href="#url"><b>Leica</b></a></li> </ul> </li> <li><a href="#url"><b>Lens Hoods</b></a></li> <li><a href="#url"><b>Lens Cleaners</b></a></li> </ul> </li> <li><a href="#url"><b>Tripods</b></a></li> <li><a href="#url"><b>Flashguns</b></a></li> <li><a href="#url"><b>Accessories</b></a></li> <li><a href="#url"><b>Special Offers</b></a></li> <li><a href="#url"><b>Electronics</b></a></li> </ul> </li> <li class="drop"><a class="main down" href="#url"><b>Accessories</b></a> <ul> <li class="fly"><a class="main" href="#url"><b>Flashguns</b></a> <ul> <li class="fly"><a class="main" href="#url"><b>Digital Cameras</b></a> <ul> <li><a href="#url"><b>Nikon</b></a></li> <li><a href="#url"><b>Canon</b></a></li> <li><a href="#url"><b>Panasonic</b></a></li> <li><a href="#url"><b>Pentax</b></a></li> <li><a href="#url"><b>Kpdak</b></a></li> </ul> </li> <li><a href="#url"><b>Film Cameras</b></a></li> <li><a href="#url"><b>Reflectors</b></a></li> <li><a href="#url"><b>Stands</b></a></li> <li><a href="#url"><b>Remote Control</b></a></li> <li><a href="#url"><b>Batteries</b></a></li> </ul> </li> <li class="fly"><a class="main" href="#url"><b>Filters</b></a> <ul> <li><a href="#url"><b>Ultra Violet</b></a></li> <li><a href="#url"><b>Lens protection</b></a></li> <li><a href="#url"><b>Yellow</b></a></li> <li><a href="#url"><b>Red</b></a></li> <li><a href="#url"><b>Orange</b></a></li> <li><a href="#url"><b>Blue</b></a></li> </ul> </li> <li class="fly"><a class="main" href="#url"><b>Remote Control</b></a> <ul> <li><a href="#url"><b>Canon</b></a></li> <li><a href="#url"><b>Nikon</b></a></li> <li><a href="#url"><b>Pentax</b></a></li> </ul> </li> <li class="fly"><a class="main" href="#url"><b>Camera Cases</b></a> <ul> <li><a href="#url"><b>Pentax</b></a></li> <li><a href="#url"><b>Nikox</b></a></li> <li><a href="#url"><b>Canon</b></a></li> <li><a href="#url"><b>Pentax</b></a></li> <li><a href="#url"><b>Kodak</b></a></li> <li><a href="#url"><b>Minolta</b></a></li> </ul> </li> <li><a href="#url"><b>Lens Brush</b></a></li> </ul> </li> <li class="drop right"><a class="main down" href="#url"><b>Outlets</b></a> <ul> <li><a href="#url"><b>Support</b></a></li> <li><a href="#url"><b>Buying</b></a></li> <li><a href="#url"><b>Photographers</b></a></li> <li class="fly"><a class="main" href="#url"><b>Stockist</b></a> <ul> <li><a href="#url"><b>Currys</b></a></li> <li><a href="#url"><b>Dixons</b></a></li> <li><a href="#url"><b>Jessops</b></a></li> <li><a href="#url"><b>Staples</b></a></li> </ul> </li> <li><a href="#5"><b>General</b></a></li> <li class="fly"><a class="main" href="#url"><b>Sales</b></a> <ul> <li><a href="#url"><b>USA</b></a></li> <li><a href="#url"><b>CANADA</b></a></li> <li><a href="#url"><b>South America</b></a></li> <li class="fly"><a class="main" href="#url"><b>Europe</b></a> <ul> <li><a href="#url"><b>Britain</b></a></li> <li><a href="#url"><b>France</b></a></li> <li><a href="#url"><b>Germany</b></a></li> <li><a href="#url"><b>Spain</b></a></li> <li><a href="#url"><b>Italy</b></a></li> </ul> </li> <li><a href="#url"><b>Australia</b></a></li> <li><a href="#url"><b>Asia</b></a></li> </ul> </li> </ul> </li> <li class="drop"><a class="main" href="#url"><b>Privacy Policy</b></a></li> </ul> </div>
