My first instinct is to click the image. So I went and
added this piece of code to index.php in the modules
directory.
echo "<tr valign=\"top\"><td valign=\"top\" rowspan=\"4
\"><a href=\"$book_url\"><img src=\"modules/
$module_name/images/$img\" border=\"0
\"></a></tr></td></table>";
<a href=\"$book_url\"> was added.
The user can now click the image to go to Amazon and
purchase or whereever the webmaster wants to redirect.