Have you ever look through a glass? This demo is exactly that effect of enhancing the image behind the glass, the Fisheye. It's not flash, only pure JavaScript.
<html>
<head>
<base href="http://www.ajaxdaddy.com/web20/jquery/interface-fisheye/">
<style type="text/css">
body {color: white;background: #52616F;}
a { color: white; }
</style>
<meta http-equiv="Content-Language" content="en" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Fisheye - Interface plugin for jQuery</title>
<script type="text/javascript" ...