version 1.1:
    -new: added options to work with http://imageresizing.net/ server-side effects. 
        View options page here: http://www.garralab.com/nailthumb-options.php 
        or the live demo here: http://www.garralab.com/nailthumb-serverside-demo.php
    -fix: fixed a css problem that prevented IE7 from working correctly. 
        IE7 need the container to have positon:relative for overflow:hidden to work properly.