CSS Drop Menu

Here is one example that will do almost everything you would want.
From my old friends: http://www.positioniseverything.net/css-dropdowns.html

Quote

The entire nav is semantically just a set of nested lists, making for reasonable accessibility.

This nav works in IE5, IE5.5, IE6, Op7, Gecko, Konqueror, and Safari. IEmac fails to support the hover method used, and so gets the expanded nav instead. IEwin with scripting disables also gets the expanded nav. Nav 4 does not support this method, or much else for that matter.

css and js in the head section....modify as needed:

Code:

<head>
<script type="text/javascript">if (window.self != window.top) window.top.location = window.self.location; </script>




<style type="text/css">

/*XXXXXXXXXX Generic page styling rules XXXXXXXXXX*/

html, body, ul, li { padding: 0; margin: 0; list-style: none;}

body {
margin: 20px 0;
text-align: center;
font-family: arial, sans-serif;
font-size: 100.01%;
}

#wrapper {
margin: 0 auto;
padding: 79px 0 0;
width: 760px;
border: 1px solid #888;
text-align: left;
background: #fffaee url(images/flyoutbanner.gif) no-repeat;
}

/* Box model hack \*/
* html #wrapper {
width: 762px;
w\idth: 760px;
}
/* */

.textbox {
padding: 1px 1em;
font-size: .9em;
}

.textbox a {color: #000;}

.back {text-align: right; padding: 10px 10px 0 0;}

.alignright {margin: 0 30px 20px 0; text-align: right;}

.small {font-size: .8em;}

h1 {position: absolute; left: -3000px;}

h2 {font-size: 1em;}

p {margin: .8em 1em .8em 1.6em;}

/*XXXXXXXXXXXX Primary top nav rules XXXXXXXXXXX*/

.nav {
position: relative;
background: #def;
border: 1px solid #888; /* borders the bottom of the top nav */
border-width: 1px 0;
width: 100%;
}

.button {
width: 190px;
float: left;
}

.parent {position: relative;}
/* this parent div does not provide "sticky hovering", but instead fixes a
strange bug in Op7. When an element serves as a hovered popup "parent" element,
that element must not also be floated or all heck breaks loose in Opera 7.
To prevent this, we have floated the top level list items, while nesting
hoverable parent divs inside that are then hovered to generate the dropdowns.
Thus the ugly (but interesting) Op7 bug is defeated. */

.floatfix {margin-right: -3px;}
/* this fixes the IE 3px bug that is common in this type of float arrangement */

/*XXXXXXXXXXXX Primary dropdown/flyout rules XXXXXXXXXXX*/

.dropdown { /* rules for dropdown div */
width: 250px;
position: absolute;
left: -3000px;
top: auto; /* puts dropdowns directly under top nav */
text-align: left; /* needed because IE misapplies text centering to boxes */
background: url(images/bgfix.gif);
}

.dropdown div {
width: 220px;
position: absolute;
left: -3000px;
top: 0;
background: url(images/bgfix.gif);
text-align: left; /* needed because IE misapplies text centering to boxes */
}

/* The margins on the UL's replace the div paddings to create "sticky hovering"
zones, and the margins should "fill" the divs, making the IE BG fix unnecessary.
Unfortunately the BG fix is still needed, altho this method does eliminate
possible box model problems */

.dropdown ul {
width: 189px; /* tweaked so that dropdowns appear to "line up" with top links */
margin: 0 30px 30px 30px; /* creates "sticky hovering" zones for dropdowns */
border: 1px solid #888;
border-width: 1px 1px 0;
} /* borders sides and top of the dropdowns and flyouts; links provide the bottom border */

.dropdown div ul {margin: 30px 30px 30px 0;} /* creates "sticky hovering" zones for flyouts */

.four .dropdown ul {width: 190px;} /* modifies width for rightmost "visible" dropdown (tweak) */

.four .dropdown div ul {margin: 30px 0 30px 30px; position: relative;} /* rule reversal for "visible" right drop flyouts */

.nav li {text-align: center;}

.nav a {
display: block;
color: #800;
font-weight: bold;
font-size: .9em;
text-decoration: none;
padding: 6px 0 5px;
border-right: 1px solid #888; /* makes the dividers between the top nav links */
}

.four a {border-right: 0;} /* kills right border on last top link */

.nav ul ul a {
color: #fff;
border-right: 0; /* negates right border for dropdowns and flyouts */
border-bottom: 1px solid #888; /* borders the bottoms of the dropdown and flyout links */
}

.dropdown li {
position: relative;
vertical-align: bottom; /* IE5/win bugfix */
}

.parent:hover {background-image: url(images/bgfix.gif);}
/* this hover calls a transparent GIF only to defeat the IE failed hover bug. Any
background change on hovering div.parent will make IE obey and display the dropdown.
While the call itself will fix the bug, make sure you actually call a real image
file so that your site error logs will not fill with failed image calls. */

.parent:hover div.dropdown {left: -31px;} /* hover rule for dropdowns */
/* extra pixel makes dropdowns "line up" with top links */

.dropdown li:hover div { /* hover rule for flyouts */
left: 180px; /* this value controls the amount of flyout "overlap" */
top: -26px; /* this value controls the amount of flyout vertical offset */
}

.four li:hover div { /* reversed flyout rules for rightmost drop flyouts */
left: -210px;
top: -26px;
}

.nav div.mini-zone { /* special hover zone that covers the "danger corner" */
padding: 0;
width: 15px;
height: 15px;
font-size: 1px;
left: -3000px;
bottom: -15px;
top: auto;
background: url(images/bgfix.gif);
}

.nav .dropdown li:hover div.mini-zone { /* hover rule for mini-zones */
left: auto;
right: 8px;
top: auto;
}

.nav .four li:hover div.mini-zone { /* reversed hover rule for rightmost drop mini-zones */
left: 8px;
}

.dropdown li:hover {background: #235;} /* hover color effect on dropdown links */

.dropdown div li:hover {background: #ff7;} /* hover color effect on flyout links */

/*XXXXXXXXXXX Primary dropdown backgrounds XXXXXXXXXX*/

.one ul {background: #d79b00;}
.two ul {background: #459;}
.three ul {background: #4a3;}
.four ul {background: #790000;}
.dropdown div ul {background: #eda;} /* colors BG of flyouts */
.dropdown div ul a {color: #400;} /* colors text of flyouts */

/*XXXXXXXXXX z-index rules for top nav XXXXXXXXXXX*/

.one {z-index: 10;}
.two {z-index: 20;}
.three {z-index: 30;}
.four {z-index: 40;}
.four:hover {z-index: 20;}
/* this last is a special trick that reverses the stacking order of the rightmost
top link when it or its children are hovered. This, and the previous rules work
together so that when a user is on the top link of any flyout, they can move
vertically to the top link directly above and not have the sticky hoivering zone
on the flyout get in the way of hovering that top link. */

/*XXXXXXXXXXX Special fixes XXXXXXXXXXX*/

/* This is to hide the following from IE/Mac. \*/
* html .button .dropdown li {
height: 1%;
margin-left: -16px;
mar\gin-left: 0;
}
/* */

* html .nav a
{height: 1%;}

/* The first 2 rules above fix "bullet region" problems in IE5.x/win,
and the 2nd is to make all links fully clickable. */

.brclear { /* Use a break with this class to clear float containers */
clear:both;
height:0;
margin:0;
font-size: 1px;
line-height: 0;
}

/*\*/ /*/
.nav .dropdown, .nav .dropdown div {width: 189px;}
.nav .button .dropdown ul {margin: 0px;}
.nav .dropdown, .nav .dropdown div {position: static;}
.nav .dropdown ul {border: 0;}
.mini-zone {display: none;}
/* this rule block "dumbs down" the nav for IEmac */

</style>




</head>

The part within the body where the actual links go:

Code:

<body>

<div id="wrapper">

<h1>Deluxe CSS Dropdowns and Flyouts</h1>

<div class="nav">

<ul>

<li class="button"><div class="parent one"><a href="#">First Link</a>
<div class="dropdown">
<ul>
<li style="z-index: 10;">
<a href="#">Sublink One</a>
<div class="mini-zone"></div>
<div>
<ul>

<li><a href="#">One.One</a></li>
<li><a href="#">One.Two</a></li>
<li><a href="#">One.Three</a></li>
<li><a href="#">One.Four</a></li>
<li><a href="#">One.Five</a></li>
</ul>

</div>
</li>
<li style="z-index: 9;">
<a href="#">Sublink Two</a>
<div class="mini-zone"></div>
<div>
<ul>
<li><a href="#">Two.One</a></li>

<li><a href="#">Two.Two</a></li>
<li><a href="#">Two.Three</a></li>
<li><a href="#">Two.Four</a></li>
<li><a href="#">Two.Five</a></li>
</ul>
</div>
</li>

<li style="z-index: 8;">
<a href="#">Sublink Three</a>
<div class="mini-zone"></div>
<div>
<ul>
<li><a href="#">Three.One</a></li>
<li><a href="#">Three.Two</a></li>

<li><a href="#">Three.Three</a></li>
<li><a href="#">Three.Four</a></li>
<li><a href="#">Three.Five</a></li>
</ul>
</div>
</li>
<li style="z-index: 7;">

<a href="#">Sublink Four</a>
<div class="mini-zone"></div>
<div>
<ul>
<li><a href="#">Four.One</a></li>
<li><a href="#">Four.Two</a></li>
<li><a href="#">Four.Three</a></li>

<li><a href="#">Four.Four</a></li>
<li><a href="#">Four.Five</a></li>
</ul>
</div>
</li>
<li style="z-index: 6;">
<a href="#">Sublink Five</a>

<div class="mini-zone"></div>
<div>
<ul>
<li><a href="#">Five.One</a></li>
<li><a href="#">Five.Two</a></li>
<li><a href="#">Five.Three</a></li>
<li><a href="#">Five.Four</a></li>

<li><a href="#">Five.Five</a></li>
</ul>
</div>
</li>
</ul>
</div></div>
</li>

<li class="button"><div class="parent two"><a href="#">Second Link</a>
<div class="dropdown">

<ul>
<li style="z-index: 10;">
<a href="#">Sublink One</a>
<div class="mini-zone"></div>
<div>
<ul>
<li><a href="#">One.One</a></li>
<li><a href="#">One.Two</a></li>

<li><a href="#">One.Three</a></li>
<li><a href="#">One.Four</a></li>
<li><a href="#">One.Five</a></li>
</ul>
</div>
</li>
<li style="z-index: 9;">

<a href="#">Sublink Two</a>
<div class="mini-zone"></div>
<div>
<ul>
<li><a href="#">Two.One</a></li>
<li><a href="#">Two.Two</a></li>
<li><a href="#">Two.Three</a></li>

<li><a href="#">Two.Four</a></li>
<li><a href="#">Two.Five</a></li>
</ul>
</div>
</li>
<li style="z-index: 8;">
<a href="#">Sublink Three</a>

<div class="mini-zone"></div>
<div>
<ul>
<li><a href="#">Three.One</a></li>
<li><a href="#">Three.Two</a></li>
<li><a href="#">Three.Three</a></li>
<li><a href="#">Three.Four</a></li>

<li><a href="#">Three.Five</a></li>
</ul>
</div>
</li>
<li style="z-index: 7;">
<a href="#">Sublink Four</a>
<div class="mini-zone"></div>
<div>

<ul>
<li><a href="#">Four.One</a></li>
<li><a href="#">Four.Two</a></li>
<li><a href="#">Four.Three</a></li>
<li><a href="#">Four.Four</a></li>
<li><a href="#">Four.Five</a></li>

</ul>
</div>
</li>
<li style="z-index: 6;">
<a href="#">Sublink Five</a>
<div class="mini-zone"></div>
<div>
<ul>

<li><a href="#">Five.One</a></li>
<li><a href="#">Five.Two</a></li>
<li><a href="#">Five.Three</a></li>
<li><a href="#">Five.Four</a></li>
<li><a href="#">Five.Five</a></li>
</ul>

</div>
</li>
</ul>
</div></div>
</li>

<li class="button"><div class="parent three"><a href="#">Third Link</a>
<div class="dropdown">
<ul>
<li style="z-index: 10;">
<a href="#">Sublink One</a>

<div class="mini-zone"></div>
<div>
<ul>
<li><a href="#">One.One</a></li>
<li><a href="#">One.Two</a></li>
<li><a href="#">One.Three</a></li>
<li><a href="#">One.Four</a></li>

<li><a href="#">One.Five</a></li>
</ul>
</div>
</li>
<li style="z-index: 9;">
<a href="#">Sublink Two</a>
<div class="mini-zone"></div>
<div>

<ul>
<li><a href="#">Two.One</a></li>
<li><a href="#">Two.Two</a></li>
<li><a href="#">Two.Three</a></li>
<li><a href="#">Two.Four</a></li>
<li><a href="#">Two.Five</a></li>

</ul>
</div>
</li>
<li style="z-index: 8;">
<a href="#">Sublink Three</a>
<div class="mini-zone"></div>
<div>
<ul>

<li><a href="#">Three.One</a></li>
<li><a href="#">Three.Two</a></li>
<li><a href="#">Three.Three</a></li>
<li><a href="#">Three.Four</a></li>
<li><a href="#">Three.Five</a></li>
</ul>

</div>
</li>
<li style="z-index: 7;">
<a href="#">Sublink Four</a>
<div class="mini-zone"></div>
<div>
<ul>
<li><a href="#">Four.One</a></li>

<li><a href="#">Four.Two</a></li>
<li><a href="#">Four.Three</a></li>
<li><a href="#">Four.Four</a></li>
<li><a href="#">Four.Five</a></li>
</ul>
</div>
</li>

<li style="z-index: 6;">
<a href="#">Sublink Five</a>
<div class="mini-zone"></div>
<div>
<ul>
<li><a href="#">Five.One</a></li>
<li><a href="#">Five.Two</a></li>

<li><a href="#">Five.Three</a></li>
<li><a href="#">Five.Four</a></li>
<li><a href="#">Five.Five</a></li>
</ul>
</div>
</li>
</ul>

</div></div>
</li>

<li class="button floatfix"><div class="parent four"><a href="#">Fourth Link</a>
<div class="dropdown">
<ul>
<li style="z-index: 10;">
<a href="#">Sublink One</a>
<div class="mini-zone"></div>
<div>

<ul>
<li><a href="#">One.One</a></li>
<li><a href="#">One.Two</a></li>
<li><a href="#">One.Three</a></li>
<li><a href="#">One.Four</a></li>
<li><a href="#">One.Five</a></li>

</ul>
</div>
</li>
<li style="z-index: 9;">
<a href="#">Sublink Two</a>
<div class="mini-zone"></div>
<div>
<ul>

<li><a href="#">Two.One</a></li>
<li><a href="#">Two.Two</a></li>
<li><a href="#">Two.Three</a></li>
<li><a href="#">Two.Four</a></li>
<li><a href="#">Two.Five</a></li>
</ul>

</div>
</li>
<li style="z-index: 8;">
<a href="#">Sublink Three</a>
<div class="mini-zone"></div>
<div>
<ul>
<li><a href="#">Three.One</a></li>

<li><a href="#">Three.Two</a></li>
<li><a href="#">Three.Three</a></li>
<li><a href="#">Three.Four</a></li>
<li><a href="#">Three.Five</a></li>
</ul>
</div>
</li>

<li style="z-index: 7;">
<a href="#">Sublink Four</a>
<div class="mini-zone"></div>
<div>
<ul>
<li><a href="#">Four.One</a></li>
<li><a href="#">Four.Two</a></li>

<li><a href="#">Four.Three</a></li>
<li><a href="#">Four.Four</a></li>
<li><a href="#">Four.Five</a></li>
</ul>
</div>
</li>
<li style="z-index: 6;">

<a href="#">Sublink Five</a>
<div class="mini-zone"></div>
<div>
<ul>
<li><a href="#">Five.One</a></li>
<li><a href="#">Five.Two</a></li>
<li><a href="#">Five.Three</a></li>

<li><a href="#">Five.Four</a></li>
<li><a href="#">Five.Five</a></li>
</ul>
</div>
</li>
</ul>
</div></div>
</li>

</ul>
<br class="brclear" />

</div> 
.
.
</body>

ymmv

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