I'm using this great plugin on a WordPress site I'm building, but for some reason it won't work proplery in IE6 or 7.
When linking to a Youtube video it'll open the Shadowbox but it will just stay blank. Linking to images is no problem.
It works fine in every other browser out there. Oddly enough it works once every 100 times or so in IE without me changing anything to the site, post or link.
A testversion can be found at http://www.tesslowenhardt.nl/wordtest/ . It's the only link in the content area, fittingly labelled "youtube test".
Thanks in advance.
( <?php wp_footer(); ?> is in the footer as required ;) )