纯div+css制作的弹出菜单

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html xmlns="http://www.w3.org/1999/xhtml">
head>
meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
title>二级dropdown弹出菜单--A CROSS BROWSER DROP DOWN CASCADING VALIDATING MENUtitle>
style type="text/css">
/* common styling */
/* set up the overall width of the menu div, the font and the margins */
.menu {
font-family: arial, sans-serif; 
width:750px; 
margin:0; 
margin:50px 0;
}
/* remove the bullets and set the margin and padding to zero for the unordered list */
.menu ul {
padding:0; 
margin:0;
list-style-type: none;
}
/* float the list so that the items are in a line and their position relative so that the drop down list will appear in the right place underneath each list item */
.menu ul li {
float:left; 
position:relative;
}
/* style the links to be 104px wide by 30px high with a top and right border 1px solid white. Set the background color and the font size. */
.menu ul li a, .menu ul li a:visited {
display:block; 
text-align:center; 
text-decoration:none; 
width:104px; 
height:30px; 
color:#000; 
border:1px solid #fff;
border-width:1px 1px 0 0;
background:#c9c9a7; 
line-height:30px; 
font-size:11px;
}
/* make the dropdown ul invisible */
.menu ul li ul {
display: none;
}
/* specific to non IE browsers */
/* set the background and foreground color of the main menu li on hover */
.menu ul li:hover a {
color:#fff; 
background:#b3ab79;
}
/* make the sub menu ul visible and position it beneath the main menu list item */
.menu ul li:hover ul {
display:block; 
position:absolute; 
top:31px; 
left:0; 
width:105px;
}
/* style the background and foreground color of the submenu links */
.menu ul li:hover ul li a {
display:block; 
background:#faeec7; 
color:#000;
}
/* style the background and forground colors of the links on hover */
.menu ul li:hover ul li a:hover {
background:#dfc184; 
color:#000;
}
style>

head>
body>
div class="menu">
ul>
li>a class="hide" href="../menu/index.html">DEMOSa>

    ul>
    li>a href="../menu/zero_dollars.html" title="The zero dollar ads page">zero dollarsa>li>
    li>a href="../menu/embed.html" title="Wrapping text around images">wrapping texta>li>
    li>a href="../menu/form.html" title="Styling forms">styled forma>li>
    li>a href="../menu/nodots.html" title="Removing active/focus borders">active focusa>li>
    li>a href="../menu/shadow_boxing.html" title="Multi-position drop shadow">shadow boxinga>li>
    li>a href="../menu/old_master.html" title="Image Map for detailed information">image mapa>li>
    li>a href="../menu/bodies.html" title="fun with background images">fun backgroundsa>li>
    li>a href="../menu/fade_scroll.html" title="fade-out scrolling">fade scrollinga>li>
    li>a href="../menu/em_images.html" title="em size images compared">em sized imagesa>li>
    ul>

li>
li>a class="hide" href="index.html">MENUSa>

    ul>
    li>a href="spies.html" title="a coded list of spies">spies menua>li>
    li>a href="vertical.html" title="a horizontal vertical menu">vertical menua>li>
    li>a href="expand.html" title="an enlarging unordered list">enlarging lista>li>
    li>a href="enlarge.html" title="an unordered list with link images">link imagesa>li>
    li>a href="cross.html" title="non-rectangular links">non-rectangulara>li>
    li>a href="jigsaw.html" title="jigsaw links">jigsaw linksa>li>
    li>a href="circles.html" title="circular links">circular linksa>li>
    ul>

li>
li>a class="hide" href="../layouts/index.html">LAYOUTSa>

    ul>
    li>a href="../layouts/bodyfix.html" title="Cross browser fixed layout">Fixed 1a>li>
    li>a href="../layouts/body2.html" title="Cross browser fixed layout">Fixed 2a>li>
    li>a href="../layouts/body4.html" title="Cross browser fixed layout">Fixed 3a>li>
    li>a href="../layouts/body5.html" title="Cross browser fixed layout">Fixed 4a>li>
    li>a href="../layouts/minimum.html" title="A simple minimum width layout">minimum widtha>li>
    ul>

li>
li>a class="hide" href="../boxes/index.html">BOXESa>

    ul>
    li>a href="spies.html" title="a coded list of spies">spies menua>li>
    li>a href="vertical.html" title="a horizontal vertical menu">vertical menua>li>
    li>a href="expand.html" title="an enlarging unordered list">enlarging lista>li>
    li>a href="enlarge.html" title="an unordered list with link images">link imagesa>li>
    li>a href="cross.html" title="non-rectangular links">non-rectangulara>li>
    li>a href="jigsaw.html" title="jigsaw links">jigsaw linksa>li>
    li>a href="circles.html" title="circular links">circular linksa>li>
    ul>

li>
li>a class="hide" href="../mozilla/index.html">MOZILLAa>

    ul>
    li>a href="../mozilla/dropdown.html" title="A drop down menu">drop down menua>li>
    li>a href="../mozilla/cascade.html" title="A cascading menu">cascading menua>li>
    li>a href="../mozilla/content.html" title="Using content:">content:a>li>
    li>a href="../mozilla/moxbox.html" title=":hover applied to a div">mozzie boxa>li>
    li>a href="../mozilla/rainbow.html" title="I can build a rainbow">rainbow boxa>li>
    li>a href="../mozilla/snooker.html" title="Snooker cue">snooker cuea>li>
    li>a href="../mozilla/target.html" title="Target Practise">target practisea>li>
    li>a href="../mozilla/splittext.html" title="Two tone headings">two tone headingsa>li>
    li>a href="../mozilla/shadow_text.html" title="Shadow text">shadow texta>li>
    ul>

li>
li>a class="hide" href="../ie/index.html">EXPLORERa>

    ul>
    li>a href="../ie/exampleone.html" title="Example one">example onea>li>
    li>a href="../ie/weft.html" title="Weft fonts">weft fontsa>li>
    li>a href="../ie/exampletwo.html" title="Vertical align">vertical aligna>li>
    ul>

li>
li>a class="hide" href="../opacity/index.html">OPACITYa>

    ul>
    li>a href="../opacity/colours.html" title="colour wheel">opaque coloursa>li>
    li>a href="../opacity/picturemenu.html" title="a menu using opacity">opaque menua>li>
    li>a href="../opacity/png.html" title="partial opacity">partial opacitya>li>
    li>a href="../opacity/png2.html" title="partial opacity II">partial opacity IIa>li>
    ul>

li>
ul>

div class="clear"> div>
div>
body>
html>