[SOLVED] Problem with ie 8 but no problem with other browsers

Hello,
First, I love this theme. The best customizable theme...ever! Now, I had no problem with my new site until my client sent me an e-mail and complaint.
The site works perfectly with Safari 5, Firefox, Chrome, and Opera. I didn't check it on Explorer. I'm using Mac, WP 3.01, ATP 3.52. My client, of course, uses Windows IE 8. Checking my previous site on IE8...no problem.

My new site uses 3 languages with WPML Multilingual CMS.
Gallery with Lightbox Plus and AWSOM PixGallery.

Please take a look at the website via IE 8 and compare to Firefox or Safari.
http://www.marsifoundation.org/

Please help !
op2545