« »

This free JavaScript code drops down the container that has a lot of the menu, along with very very very numberous items when users click the indicated link. This effect will be useful and appropriate if your website has a huge list of categories, up to hundreds, need to be shown, like jsB@nk version 8.

Label: mega, navigation, onmouseover, indicated link, useful, huge list, 8

Report to us error of this JavaScript

Demo
Enlarge
Reload
New window

Code
CSS
JavaScript
HTML
Print

Copy All x2

<style type="text/css">
.megamenu{
position: absolute;
display: none;
left: 0;
top: 0;
background: white;
border: 1px solid #f06b24;
border-width: 5px 1px;
padding: 10px;
font: normal 12px Verdana;
z-index: 100;

}

.megamenu .column{
float: left;
width: 180px; /*width of each menu column*/
margin-right: 5px;
}

.megamenu .column ul{
margin: 0;
padding: 0;
list-style-type: none;
}

.megamenu .column ul li{
padding-bottom: 5px;
}

.megamenu .column h3{
background: #e0e0e0;
font: bold 13px Arial;
margin: 0 0 5px 0;
}

.megamenu .column ul li a{
text-decoration: none;
}

.megamenu .column ul li a:hover{
color: red;
}
</style>

Copy All x2

<script type="text/javascript" src="/javascript/jquery.js"></script>

<script type="text/javascript" name="jkmegamenu.js">

/***********************************************
* jQuery Mega Menu- by JavaScript Kit (www.javascriptkit.com)
* This notice must stay intact for usage
* Visit JavaScript Kit at http://www.javascriptkit.com/ for full source code
***********************************************/

/* jQuery Mega Menu v1.02
* Last updated: June 29th, 2009. This notice must stay intact for usage 
* Author: JavaScript Kit at http://www.javascriptkit.com/
* Visit http://www.javascriptkit.com/script/script2/jScale/ for full source code
*/

jQuery.noConflict();

var jkmegamenu={

effectduration: 300, //duration of animation, in milliseconds
delaytimer: 200, //delay after mouseout before menu should be hidden, in milliseconds

//No need to edit beyond here
megamenulabels: [],
megamenus: [], //array to contain each block menu instances
zIndexVal: 1000, //starting z-index value for drop down menu
$shimobj: null,

addshim:function($){
	$(document.body).append('<IFRAME id="outlineiframeshim" src="'+(location.protocol=="https:"? 'blank.htm' : 'about:blank')+'" style="display:none; left:0; top:0; z-index:999; position:absolute; filter:progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)" frameBorder="0" scrolling="no"></IFRAME>')
	this.$shimobj=$("#outlineiframeshim")
},

alignmenu:function($, e, megamenu_pos){
	var megamenu=this.megamenus[megamenu_pos]
	var $anchor=megamenu.$anchorobj
	var $menu=megamenu.$menuobj
	var menuleft=($(window).width()-(megamenu.offsetx-$(document).scrollLeft())>megamenu.actualwidth)? megamenu.offsetx : megamenu.offsetx-megamenu.actualwidth+megamenu.anchorwidth //get x coord of menu
	//var menutop=($(window).height()-(megamenu.offsety-$(document).scrollTop()+megamenu.anchorheight)>megamenu.actualheight)? megamenu.offsety+megamenu.anchorheight : megamenu.offsety-megamenu.actualheight
	var menutop=megamenu.offsety+megamenu.anchorheight  //get y coord of menu
	$menu.css({left:menuleft+"px", top:menutop+"px"})
	this.$shimobj.css({width:megamenu.actualwidth+"px", height:megamenu.actualheight+"px", left:menuleft+"px", top:menutop+"px", display:"block"})
},

showmenu:function(e, megamenu_pos){
	var megamenu=this.megamenus[megamenu_pos]
	var $menu=megamenu.$menuobj
	var $menuinner=megamenu.$menuinner
	if ($menu.css("display")=="none"){
		this.alignmenu(jQuery, e, megamenu_pos)
		$menu.css("z-index", ++this.zIndexVal)
		$menu.show(this.effectduration, function(){
			$menuinner.css('visibility', 'visible')
		})
	}
	else if ($menu.css("display")=="block" && e.type=="click"){ //if menu is hidden and this is a "click" event (versus "mouseout")
		this.hidemenu(e, megamenu_pos)
	}
	return false
},

hidemenu:function(e, megamenu_pos){
	var megamenu=this.megamenus[megamenu_pos]
	var $menu=megamenu.$menuobj
	var $menuinner=megamenu.$menuinner
	$menuinner.css('visibility', 'hidden')
	this.$shimobj.css({display:"none", left:0, top:0})
	$menu.hide(this.effectduration)
},

definemenu:function(anchorid, menuid, revealtype){
	this.megamenulabels.push([anchorid, menuid, revealtype])
},

render:function($){
	for (var i=0, labels=this.megamenulabels[i]; i<this.megamenulabels.length; i++, labels=this.megamenulabels[i]){
		if ($('#'+labels[0]).length!=1 || $('#'+labels[1]).length!=1) //if one of the two elements are NOT defined, exist
			return
		this.megamenus.push({$anchorobj:$("#"+labels[0]), $menuobj:$("#"+labels[1]), $menuinner:$("#"+labels[1]).children('ul:first-child'), revealtype:labels[2], hidetimer:null})
		var megamenu=this.megamenus[i]	
		megamenu.$anchorobj.add(megamenu.$menuobj).attr("_megamenupos", i+"pos") //remember index of this drop down menu
		megamenu.actualwidth=megamenu.$menuobj.outerWidth()
		megamenu.actualheight=megamenu.$menuobj.outerHeight()
		megamenu.offsetx=megamenu.$anchorobj.offset().left
		megamenu.offsety=megamenu.$anchorobj.offset().top
		megamenu.anchorwidth=megamenu.$anchorobj.outerWidth()
		megamenu.anchorheight=megamenu.$anchorobj.outerHeight()
		$(document.body).append(megamenu.$menuobj) //move drop down menu to end of document
		megamenu.$menuobj.css("z-index", ++this.zIndexVal).hide()
		megamenu.$menuinner.css("visibility", "hidden")
		megamenu.$anchorobj.bind(megamenu.revealtype=="click"? "click" : "mouseenter", function(e){
			var menuinfo=jkmegamenu.megamenus[parseInt(this.getAttribute("_megamenupos"))]
			clearTimeout(menuinfo.hidetimer) //cancel hide menu timer
			return jkmegamenu.showmenu(e, parseInt(this.getAttribute("_megamenupos")))
		})
		megamenu.$anchorobj.bind("mouseleave", function(e){
			var menuinfo=jkmegamenu.megamenus[parseInt(this.getAttribute("_megamenupos"))]
			if (e.relatedTarget!=menuinfo.$menuobj.get(0) && $(e.relatedTarget).parents("#"+menuinfo.$menuobj.get(0).id).length==0){ //check that mouse hasn't moved into menu object
				menuinfo.hidetimer=setTimeout(function(){ //add delay before hiding menu
					jkmegamenu.hidemenu(e, parseInt(menuinfo.$menuobj.get(0).getAttribute("_megamenupos")))
				}, jkmegamenu.delaytimer)
			}
		})
		megamenu.$menuobj.bind("mouseenter", function(e){
			var menuinfo=jkmegamenu.megamenus[parseInt(this.getAttribute("_megamenupos"))]
			clearTimeout(menuinfo.hidetimer) //cancel hide menu timer
		})
		megamenu.$menuobj.bind("click mouseleave", function(e){
			var menuinfo=jkmegamenu.megamenus[parseInt(this.getAttribute("_megamenupos"))]
			menuinfo.hidetimer=setTimeout(function(){ //add delay before hiding menu
				jkmegamenu.hidemenu(e, parseInt(menuinfo.$menuobj.get(0).getAttribute("_megamenupos")))
			}, jkmegamenu.delaytimer)
		})
	} //end for loop
	if(/Safari/i.test(navigator.userAgent)){ //if Safari
		$(window).bind("resize load", function(){
			for (var i=0; i<jkmegamenu.megamenus.length; i++){
				var megamenu=jkmegamenu.megamenus[i]
				var $anchorisimg=(megamenu.$anchorobj.children().length==1 && megamenu.$anchorobj.children().eq(0).is('img'))? megamenu.$anchorobj.children().eq(0) : null
				if ($anchorisimg){ //if anchor is an image link, get offsets and dimensions of image itself, instead of parent A
					megamenu.offsetx=$anchorisimg.offset().left
					megamenu.offsety=$anchorisimg.offset().top
					megamenu.anchorwidth=$anchorisimg.width()
					megamenu.anchorheight=$anchorisimg.height()
				}
			}
		})
	}
	else{
		$(window).bind("resize", function(){
			for (var i=0; i<jkmegamenu.megamenus.length; i++){
				var megamenu=jkmegamenu.megamenus[i]	
				megamenu.offsetx=megamenu.$anchorobj.offset().left
				megamenu.offsety=megamenu.$anchorobj.offset().top
			}
		})
	}
	jkmegamenu.addshim($)
}

}

jQuery(document).ready(function($){
	jkmegamenu.render($)
})
/*
     This script downloaded from www.JavaScriptBank.com
     Come to view and download over 2000+ free javascript at www.JavaScriptBank.com
*/
</script>

<script type="text/javascript">

//jkmegamenu.definemenu("anchorid", "menuid", "mouseover|click")
jkmegamenu.definemenu("megaanchor", "megamenu1", "mouseover")

</script>

Copy All x2

<!--Mega Menu Anchor-->
<p align="center">
<a href="http://www.javascriptkit.com" id="megaanchor">Tech Links</a>
</p>



<!--Mega Drop Down Menu HTML. Retain given CSS classes-->
<div id="megamenu1" class="megamenu">

<div class="column">
	<h3>Web Development</h3>
	<ul>
	<li><a href="http://www.javascriptkit.com">JavaScript Kit</a></li>
	<li><a href="http://www.dynamicdrive.com/">Dynamic Drive</a></li>
	<li><a href="http://www.javascriptbank.com">JavaScript Bank</a></li>
	<li><a href="http://www.cssdrive.com">CSS Drive</a></li>
	<li><a href="http://www.codingforums.com">Coding Forums</a></li>
	<li><a href="http://www.javascriptkit.com/domref/">DOM Reference</a></li>
	</ul>
</div>

<div class="column">
	<h3>News Related</h3>
	<ul>
	<li><a href="http://www.cnn.com/">CNN</a></li>
	<li><a href="http://www.msnbc.com">MSNBC</a></li>
	<li><a href="http://www.google.com">Google</a></li>
	<li><a href="http://news.bbc.co.uk">BBC News</a></li>
	</ul>
</div>

<div class="column">
	<h3>Technology</h3>
	<ul>
	<li><a href="http://www.news.com/">News.com</a></li>
	<li><a href="http://www.slashdot.com">SlashDot</a></li>
	<li><a href="http://www.digg.com">Digg</a></li>
	<li><a href="http://www.techcrunch.com">Tech Crunch</a></li>
	</ul>
</div>

<br style="clear: left" /> <!--Break after 3rd column. Move this if desired-->

<div class="column">
	<h3>Web Development</h3>
	<ul>
	<li><a href="http://www.javascriptkit.com">JavaScript Kit</a></li>
	<li><a href="http://www.dynamicdrive.com/">Dynamic Drive</a></li>
	<li><a href="http://www.javascriptbank.com">JavaScript Bank</a></li>
	<li><a href="http://www.cssdrive.com">CSS Drive</a></li>
	<li><a href="http://www.codingforums.com">Coding Forums</a></li>
	<li><a href="http://www.javascriptkit.com/domref/">DOM Reference</a></li>
	</ul>
</div>

<div class="column">
	<h3>News Related</h3>
	<ul>
	<li><a href="http://www.cnn.com/">CNN</a></li>
	<li><a href="http://www.msnbc.com">MSNBC</a></li>
	<li><a href="http://www.google.com">Google</a></li>
	<li><a href="http://news.bbc.co.uk">BBC News</a></li>
	</ul>
</div>

<div class="column">
	<h3>Technology</h3>
	<ul>
	<li><a href="http://www.news.com/">News.com</a></li>
	<li><a href="http://www.slashdot.com">SlashDot</a></li>
	<li><a href="http://www.digg.com">Digg</a></li>
	<li><a href="http://www.techcrunch.com">Tech Crunch</a></li>
	</ul>
</div>

</div>