纯CSS实现的多级下拉鼠标点击显示导航菜单代码
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Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>纯CSS实现的多级下拉鼠标点击显示导航菜单代码</title> <style type="text/css"> /* for this demo only */ #backgroundHolder { width:750px; height:490px; background:url(ulmulti4/pic.jpg); padding-top:10px; 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 */ .nav a { background:url(ulmulti4/box.gif) no-repeat right center; } .nav a.top { background:url(ulmulti4/box.gif) no-repeat right top; } .nav a.top2 { background:url(ulmulti4/box2.gif) no-repeat right top; } .nav a.bottom { background:url(ulmulti4/box.gif) no-repeat right bottom; } .right ul ul a { background:url(ulmulti4/box3.gif) no-repeat right center; } .right ul ul a.top2 { background:url(ulmulti4/box3.gif) no-repeat right top; } .right ul ul a.bottom { background:url(ulmulti4/box3.gif) no-repeat right bottom; } /* style the <b> element so that is does not affect the size of the link */ .nav a b { color:#600; font-weight:normal; display:block; padding:5px 10px 5px 15px; } .nav .fly .main b { background: transparent url(ulmulti4/arrow.gif) no-repeat 117px 9px; } .nav .down b { background: transparent url(ulmulti4/arrow2.gif) no-repeat 115px 11px; } .nav .right ul b { text-align:right; } .nav .right ul ul b { padding: 5px 15px 5px 10px; } .nav .right ul .main b { background: transparent url(ulmulti4/arrow3.gif) no-repeat 15px 9px; text-align:right; } .nav .right ul ul .main b { background: transparent url(ulmulti4/arrow3.gif) no-repeat 5px 9px; text-align:right; } /* HEIGHT */ .nav ul ul { top:-22px; } /* position the top of the flyout first sub menus */ .nav ul ul ul { top:-25px; } /* position the top of the flyout second and third sub menus */ .nav ul.two { top:-40px; } /* position the top of the flyout sub menus with previous text on two lines */ /* WIDTH change this WITH CARE to suit your requirements */ /*set the link width here*/ .nav .drop, .nav a { width:130px; } .nav ul li { max-width:130px; } /* fix for IE8 */ /* set the left flyout position here */ .nav ul ul { left:130px; } /* set the right flyout positions here */ .nav li.right ul ul { left:auto; right:120px; } .nav li.right ul ul ul { left:auto; right:130px; } /* make this WIDTH - 1px */ /* or WIDTH - 0.063em if using em sizing */ .nav a { margin-right:-129px; } /* ---------------------------------------------------------------------------- */ /* DO NOT CHANGE ANYTHING BELOW */ .nav li { float:left; } /* fixes IE 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 bits that do ALL the work to bring the sub menus into view */ /* .nav a:hover, */ /* un-comment this style if you want the menu to work on 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:#060; cursor:pointer; } /* this is for keyboard tabbing color change */ /* OPERA fix */ .nav ul:hover, .nav ul ul:hover { clear:left; } /* to stop intermittent sub link :hover problems */ /* ---------------------------------------------------------------------------- */ </ul></b></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 level */ a:active {} /* requires a blank style for :active to stop it being buggy */ .nav ul:hover, .nav ul ul:hover {clear:none;} /* to stop intermittent sub link :hover problems */ </style> < ![endif]--> </head> <body> <div id="backgroundHolder"> <ul class="nav"> <li class="drop"><a class="main top" href="#url"><b>Home</b></a></li> <li class="drop"><a class="main down top" href="#url"><b>Equipment</b></a> <ul> <li class="fly"><a class="main" href="#url"><b>Cameras</b></a> <ul> <li><a class="top2" 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> 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受教了！呵呵！