Demo
Images: preview.gif - img1_large.jpg - img1_thumb.jpg - img2_large.jpg - img2_thumb.jpg
Code
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">
body {
font: normal 13px/1.5em arial, sans-serif;
margin: 0;
padding: 0 10px;
background-color: #fff;
}
.gallerywrapper {
margin: 0px auto;
width: 500px;
}
.title {
color: #999;
font-size: 3em;
line-height: 1.1em;
margin: 165px 0 0 10px;
position: absolute;
}
ul.gallery, ul.gallery li { margin: 0; padding: 0; list-style: none; }
ul.gallery {
width: 500px;
height: 375px;
position: relative;
background: transparent url(preview.gif) no-repeat;
}
ul.gallery li {
float: left;
font-size: 0.8em;
display: inline;
line-height: 1.4em;
margin-top: 375px;
}
ul.gallery a { padding: 0; }
ul.gallery a span { display: none; padding: 0; }
ul.gallery a:hover { background: none; z-index: 100; }
ul.gallery a:hover span {
position: absolute;
width: 500px;
height: 375px;
float: left;
top: 0;
left: 0;
display: block;
}
.thumb {
height: 50px;
width: 50px;
}
img { border: 0; }
</style>
</head>
<body>
<div class="gallerywrapper">
<div class="title">My Gallery</div>
<ul class="gallery">
<li><a href="#nogo"><img class="thumb" src="img1_thumb.jpg" alt="gallery thumbnail" /><span><img src="img1_large.jpg" alt="gallery image" /></span></a></li>
<li><a href="#nogo"><img class="thumb" src="img2_thumb.jpg" alt="gallery thumbnail" /><span><img src="img2_large.jpg" alt="gallery image" /></span></a></li>
<li><a href="#nogo"><img class="thumb" src="img1_thumb.jpg" alt="gallery thumbnail" /><span><img src="img1_large.jpg" alt="gallery image" /></span></a></li>
<li><a href="#nogo"><img class="thumb" src="img2_thumb.jpg" alt="gallery thumbnail" /><span><img src="img2_large.jpg" alt="gallery image" /></span></a></li>
<li><a href="#nogo"><img class="thumb" src="img1_thumb.jpg" alt="gallery thumbnail" /><span><img src="img1_large.jpg" alt="gallery image" /></span></a></li>
<li><a href="#nogo"><img class="thumb" src="img2_thumb.jpg" alt="gallery thumbnail" /><span><img src="img2_large.jpg" alt="gallery image" /></span></a></li>
<li><a href="#nogo"><img class="thumb" src="img1_thumb.jpg" alt="gallery thumbnail" /><span><img src="img1_large.jpg" alt="gallery image" /></span></a></li>
<li><a href="#nogo"><img class="thumb" src="img2_thumb.jpg" alt="gallery thumbnail" /><span><img src="img2_large.jpg" alt="gallery image" /></span></a></li>
<li><a href="#nogo"><img class="thumb" src="img1_thumb.jpg" alt="gallery thumbnail" /><span><img src="img1_large.jpg" alt="gallery image" /></span></a></li>
<li><a href="#nogo"><img class="thumb" src="img2_thumb.jpg" alt="gallery thumbnail" /><span><img src="img2_large.jpg" alt="gallery image" /></span></a></li>
</ul>
</div>
</body>
</html>