Multi Level CSS DropDownn, DropDown Menu, MiltiLevel menu, DropDown menu using CSS

Tomorrow I found an another Simple menu style which using CSS to create its drop down list and also it works upto 4 four level.

it use different  CSS style for this menu to work in IE6 using conditional CSS.

So I decided to put that complete code here so that my Designer friends can use and learn easily.


Head Code Section

<style type="text/css" media="screen, tv, projection">
/*<![CDATA[*/

/* page styling, unimportant for the menu. only makes the page looks nicer */
body {
 font-family: Calibri, "Trebuchet MS", sans-serif;
 font-size: 100%;
}

h1 {font-size: 2em;}
h2 {font-size: 1.5em;}

.example {
 background: #eee;
 padding: 50px;
}

/* - - - ADxMenu: BASIC styles [ MANDATORY ] - - - */

/* remove all list stylings */
.menu, .menu ul {
 margin: 0;
 padding: 0;
 border: 0;
 list-style-type: none;
 display: block;
}

.menu li {
 margin: 0;
 padding: 0;
 border: 0;
 display: block;
 float: left; /* move all main list items into one row, by floating them */
 position: relative; /* position each LI, thus creating potential IE.win overlap problem */
 z-index: 5;  /* thus we need to apply explicit z-index here... */
}

.menu li:hover {
 z-index: 10000; /* ...and here. this makes sure active item is always above anything else in the menu */
 white-space: normal;/* required to resolve IE7 :hover bug (z-index above is ignored if this is not present)
       see http://www.tanfa.co.uk/css/articles/pure-css-popups-bug.asp for other stuff that work */
}

.menu li li {
 float: none;/* items of the nested menus are kept on separate lines */
}

.menu ul {
 visibility: hidden; /* initially hide all submenus. */
 position: absolute;
 z-index: 10;
 left: 0; /* while hidden, always keep them at the top left corner, */
 top: 0;  /*   to avoid scrollbars as much as possible */
}

.menu li:hover>ul {
 visibility: visible; /* display submenu them on hover */
 top: 100%; /* 1st level go below their parent item */
}

.menu li li:hover>ul { /* 2nd+ levels go on the right side of the parent item */
 top: 0;
 left: 100%;
}

/* -- float.clear --
 force containment of floated LIs inside of UL */
.menu:after, .menu ul:after {
 content: ".";
 height: 0;
 display: block;
 visibility: hidden;
 overflow: hidden;
 clear: both;
}
.menu, .menu ul { /* IE7 float clear: */
 min-height: 0;
}
/* -- float.clear.END --  */

/* -- sticky.submenu --
 it should not disappear when your mouse moves a bit outside the submenu
 YOU SHOULD NOT STYLE the background of the ".menu UL" or this feature may not work properly!
 if you do it, make sure you 110% know what you do */
.menu ul {
 background-image: url(empty.gif); /* required for sticky to work in IE6 and IE7 - due to their (different) hover bugs */
 padding: 10px 30px 30px 30px;
 margin: -10px 0 0 -30px;
 /*background: #f00;*/ /* uncomment this if you want to see the "safe" area.
        you can also use to adjust the safe area to your requirement */
}
.menu ul ul {
 padding: 30px 30px 30px 10px;
 margin: -30px 0 0 -10px;
}
/* -- sticky.submenu.END -- */






/* - - - ADxMenu: DESIGN styles [ OPTIONAL, design your heart out :) ] - - - */

.menu, .menu ul li {
 color: #eee;
 background: #234;
}

.menu ul {
 width: 11em;
}

.menu a {
 text-decoration: none;
 color: #eee;
 padding: .4em 1em;
 display: block;
 position: relative;
}

.menu a:hover, .menu li:hover>a {
 color: #fc3;
}

.menu li li { /* create borders around each item */
 border: 1px solid #ccc;
}
.menu ul>li + li { /* and remove the top border on all but first item in the list */
 border-top: 0;
}

.menu li li:hover>ul { /* inset 2nd+ submenus, to show off overlapping */
 top: 5px;
 left: 90%;
}

/* special colouring for "Main menu:", and for "xx submenu" items in ADxMenu
 placed here to clarify the terminology I use when referencing submenus in posts */
.menu>li:first-child>a, .menu li + li + li li:first-child>a {
 color: #567;
}

/* Fix for IE5/Mac \*//*/
.menu a {
 float: left;
}
/* End Fix */

/*]]>*/
</style>



<!--  Conditional CSS for IE6 -->


<!--[if lte IE 6]>
<style type="text/css" media="screen, tv, projection">
/*<![CDATA[*/

/* - - - ADxMenu: IE6 BASIC styles [MANDATORY] - - - */

/*
 this rules improves accessibility - if Javascript is disabled, the entire menu will be visible
 of course, that means that it might require different styling then.
 in which case you can use adxie class - see: aplus.co.yu/adxmenu/examples/ie6-double-style/
 */
.menu ul {
 visibility: visible;
 position: static;
}

.menu, .menu ul { /* float.clear */
 zoom: 1;
}

.menu li.adxmhover {
 z-index: 10000;
}

.menu .adxmhoverUL { /* li:hover>ul selector */
 visibility: visible;
}

.menu .adxmhoverUL { /* 1st-level submenu go below their parent item */
 top: 100%;
 left: 0;
}

.menu .adxmhoverUL .adxmhoverUL { /* 2nd+ levels go on the right side of the parent item */
 top: 0;
 left: 100%;
}

/* - - - ADxMenu: DESIGN styles - - - */

.menu ul a { /* fix clickability-area problem */
 zoom: 1;
}

.menu li li { /* fix white gap problem */
 float: left;
 width: 100%;
}

.menu li li { /* prevent double-line between items */
 margin-top: -1px;
}

.menu a:hover, .menu .adxmhoverA {  /* li:hover>a selector */
 color: #fc3;
}

.menu .adxmhoverUL .adxmhoverUL { /* inset 2nd+ submenus, to show off overlapping */
 top: 5px;
 left: 90%;
}

/*]]>*/
</style>

<script type="text/javascript" src="ADxMenu.js"></script>
<![endif]-->

HTML Source Code

<div class="example">
        <ul class="adxm menu">
            <li><a href="#">Main menu:</a></li>
            <li><a href="#" title="My writings">Blog</a>
                <ul>
                    <li><a href="#">Home</a></li>
                    <li><a href="#feeds/">Feeds</a></li>
                    <li><a href="#archive/">Archive</a></li>
                </ul>
            </li>
            <li><a href="#adxmenu/" title="Nested fly-out menu, standard-compliant">ADxMenu</a>
                <ul>
                    <li><a href="#">1st submenu</a></li>
                    <li><a href="#adxmenu/">Overview</a></li>
                    <li><a href="#adxmenu/instructions/">Instructions</a></li>
                    <li><a href="#adxmenu/examples/">Examples</a>
                        <ul>
                            <li><a href="#">2nd submenu</a></li>
                            <li><a href="#adxmenu/examples/htb/">Top to bottom</a></li>
                            <li><a href="#adxmenu/examples/hbt/">Bottom to top</a>
                                <ul>
                                    <li><a href="#">3rd submenu</a></li>
                                    <li><a href="#">Item 2</a></li>
                                    <li><a href="#">Item 3</a></li>
                                    <li><a href="#">Item 4</a></li>
                                </ul>
                            </li>
                            <li><a href="#adxmenu/examples/vlr/">Left to right</a></li>
                            <li><a href="#adxmenu/examples/vrl/">Right to left</a></li>
                        </ul>
                    </li>
                    <li><a href="#adxmenu/trouble/">Troubleshooting</a></li>
                </ul>
            </li>
            <li><a href="#wch/" title="Windowed Controls Hider, for Win IE">WCH</a>
                <ul>
                    <li><a href="#wch/">Overview</a></li>
                    <li><a href="#wch/instructions/">Instructions</a></li>
                    <li><a href="#wch/examples/">Examples</a></li>
                    <li><a href="#wch/trouble/">Troubleshooting</a></li>
                </ul>
            </li>
            <li><a href="#lab/" title="Reusable web techniques">Lab</a>
                <ul>
                    <li><a href="#css/z-pos">z-index tutorial</a></li>
                    <li><a href="#css/forms/">Styling forms</a></li>
                    <li><a href="#css/cfl/">Centered frame layout</a></li>
                    <li><a href="#css/tabs2/">Tabs with variable height</a></li>
                    <li><a href="#css/nestedtabs2/">2-level navigation</a></li>
                    <li><a href="#css/ow/">Tabs: Overlapping Windows</a></li>
                    <li><a href="#scripts/windowopen/">Unobtrusive window.open</a></li>
                    <li><a href="#scripts/fif/">Floating iFrame</a></li>
                </ul>
            </li>
            <li><a href="#deliver/" title="Various sites I (co-)did">Delivered</a>
                <ul>
                    <li><a href="#deliver/sites/">Sites &amp; proof of concepts</a></li>
                    <li><a href="#deliver/wp/">WordPress goodies</a></li>
                </ul>
            </li>
            <li><a href="#about/" title="Relevant info about me">Colophon</a></li>
            <li><a href="#about/contact/">Contact me</a></li>
        </ul>
    </div>

JavaScript link

ADxMenu.js