Se t'interessa puoi ottenere il risultato che cerchi solo con i CSS:
codice:
<!doctype html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Esempio</title>
<style type="text/css">
#gallery-container {
position: relative;
width: 500px;
height: auto;
padding-top: 350px;
padding-bottom: 15px;
margin-left: auto;
margin-right: auto;
text-align: center;
border: 1px #aaaaaa solid;
}
img.gallery-fullsize {
position: absolute;
top: 15px;
left: 50px;
display: none;
}
div.gallery-item {
display: inline-block;
}
img.gallery-preview:hover ~ img.gallery-fullsize {
display: block;
}
</style>
</head>
<body>
<h1>Galleria con CSS</h1>
<div id="gallery-container">
<div class="gallery-item">
[img]images/1s.jpg[/img]
[img]images/1.jpg[/img]
</div>
<div class="gallery-item">
[img]images/2s.jpg[/img]
[img]images/2.jpg[/img]
</div>
<div class="gallery-item">
[img]images/3s.jpg[/img]
[img]images/3.jpg[/img]
</div>
<div class="gallery-item">
[img]images/4s.jpg[/img]
[img]images/4.jpg[/img]
</div>
</div>
</body>
</html>