所谓的lightbox，就是比如在看相册时，当点某张相时，然后突出显示该相片的一个很COOL的效果，
其实是用到了prototype，scriptaculous，lightbox.js等类库的，一个小DEMO
<html>
<head>
<link rel="stylesheet" href="css/lightbox.css" type="text/css" media="screen" />
<script src="js/prototype.js" type="text/javascript"></script>
<script src="js/scriptaculous.js?load=effects" type="text/javascript"></script>
<script src="js/lightbox.js" type="text/javascript"></script>
</head>
<body>
<a href="images/megan1_400_320.jpg" rel="lightbox"><img src="images/megan1_400_320.jpg" width="100" height="80" alt="Megan" border="0" /></a>
</body>
</html>