This makes use of the imgPreview jquery plugin provided by James Padolsey

To get it to work, add a widged at the bottom of the page. Select "Other", and paste this code:

<script type="text/javascript" src=""> </script><script language="JavaScript" type="text/javascript"> //<![CDATA[ <!-- jQuery('a').imgPreview({ imgCSS: { width: 200 } }); jQuery('#imgPreviewWithStyles').css('cssText','display: none; position: absolute;background-color:#222;padding:15px;-moz-border-radius:10px;-webkit-border-radius:10px;z-index:999;border:none;'); //--> //]]> </script>

An image preview should show up for any external link.
The Sun
New York