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06.15.2008 at 11:05PM PDT, ID: 23487193
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9.5

Preloading of rollover images in a Dropdown menu

Asked by eastwop in Cascading Style Sheets (CSS), JavaScript, Dynamic HTML (DHTML)

I have a CSS dropdown menu that uses rollover images for the top level of navigation. The dropdown menus work fine but when the page is loading, the hover" images display on screen for a second and then the "unhovered" or default images load in their place.  The hover image is loaded into the <li> tag and the unhovered image in the <a> tag.

I would prefer to only have the "hover" images display when you mouseover them and not while the page is loading. Is there a workaround?
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<style type="text/css">
/* ================================================================ 
This copyright notice must be kept untouched in the stylesheet at 
all times.
 
The original version of this stylesheet and the associated (x)html
is available at http://www.cssplay.co.uk/menu/pro_drop4.html
Copyright (c) 2005-2007 Stu Nicholls. All rights reserved.
This stylesheet and the associated (x)html may be modified in any 
way to fit your requirements.
=================================================================== */
 
.menu, .menu ul {list-style-type:none; padding:0; margin:0; font-family:verdana,arial, sans-serif;}
 
/* Set up the top level list items and float left to place inline */
.menu li.top {display:block; float:left; position:relative;}
 
/* Style and position the table so it takes no part in the menu function. The font size is necessary for IE5.5 */
.menu table {border-collapse:collapse; width:0; height:0; position:absolute; top:0; left:0;}
 
/* Default top link link styling */
.menu li.top a.top_link {display:block; float:left; height:36px;}
.menu li.top a span {position:absolute; left:-9999px; top:0; z-index:0; font-size:10px;} /* move the link text off screen */
 
/* pre-load the hover images into the lists */
.menu li.p1 {width:44px; background:url(images/fmenu_home2.gif) no-repeat;;}
.menu li.p2 {width:49px; background:url(images/fmenu_news2.gif) no-repeat;;}
.menu li.p3 {width:81px; background:url(images/fmenu_contact2.gif) no-repeat;;}
 
/* set up the normal unhovered images in the links */
.menu li a#home {width:44px; background:url(images/fmenu_home.gif) no-repeat;}
.menu li a#news {width:49px; background:url(images/fmenu_news.gif) no-repeat;}
.menu li a#contact {width:81px; background:url(images/fmenu_contact.gif) no-repeat;}
 
/* make the links transparent on hover so that the hover images in the lists show through (no flicker) */
.menu li a#home:hover, .menu li:hover a#home,
.menu li a#news:hover, .menu li:hover a#news,
.menu li a#contact:hover, .menu li:hover a#contact	{background:transparent;}
 
/* Style the list OR link hover. Depends on which browser is used */
.menu a:hover {visibility:visible;} /* for IE6 */
.menu li:hover { position:relative; z-index:200;} /* for IE7 */
 
/* keep the 'next' level invisible by placing it off screen. */
.menu ul, 
.menu :hover ul ul, 
.menu :hover ul :hover ul ul,
.menu :hover ul :hover ul :hover ul ul,
.menu :hover ul :hover ul :hover ul :hover ul ul {position:absolute; left:-9999px; top:-9999px; width:0; height:0; margin:0; padding:0; list-style:none;}
 
.menu :hover ul {left:0; top:36px; background: #b9d3fb; padding:0px; border:1px solid #3a93d2; border-width:0 1px 1px; white-space:nowrap; height:auto; z-index:300;}
.menu :hover ul li {display:block; height:20px; position:relative; font-weight:normal; width:auto;}
.menu :hover ul li a {display:block; font-size:11px; height:20px; line-height:20px; width:auto; padding:0 10px; color:#000; text-decoration:none;}
.menu :hover ul li a:hover {background:#3a93d2; color:#fff;}
 
.menu ul.sub1 {width:150px;}
.menu ul.sub2 {width:185px;}
 
</style>
</head>
<body>
<ul class="menu">
	<li class="top p1"><a href="#" id="home" class="top_link"><span>Home</span></a></li>
	<li class="top p2"><a href="#" id="news" class="top_link"><span>News</span><!--[if gte IE 7]><!--></a><!--<![endif]-->
		<!--[if lte IE 6]><table><tr><td><![endif]-->
		<ul class="sub1">
			<li><a href="#">First Item</a></li>
			<li><a href="#">Second Item</a></li>
		</ul>
		<!--[if lte IE 6]></td></tr></table></a><![endif]-->
	</li>
	<li class="top p3"><a href="#" id="contact" class="top_link"><span>Contact</span><!--[if gte IE 7]><!--></a><!--<![endif]-->
		<!--[if lte IE 6]><table><tr><td><![endif]-->
		<ul class="sub2">
			<li><a href="#">Item 1</a></li>
			<li><a href="#">Item2</a></li>
                   </ul>
		<!--[if lte IE 6]></td></tr></table></a><![endif]-->
	</li>
</ul>
 
Keywords: Preloading of rollover images in a Drop…
Title
1 Rollover Hyperlink Underlining
2 CSS rollover button
3 hover on an input submit button
4 Preload a mouseover/rollover
5 Rollovers
6 Displaced Rollover
 
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[+][-]06.16.2008 at 04:14AM PDT, ID: 21792417

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About this solution

Zones: Cascading Style Sheets (CSS), JavaScript, Dynamic HTML (DHTML)
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Solution Provided By: bluefezteam
Participating Experts: 1
Solution Grade: A
 
 
[+][-]06.16.2008 at 04:15AM PDT, ID: 21792425

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[+][-]06.21.2008 at 01:58PM PDT, ID: 21838752

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