marvalis on "[Plugin: IE CSS3 Support] Drop down menu hidden after plugin activation"

Hello, after activating the plugin, the drop down menu get hidden behind the content.

I can't explain why.

http://www.starfishstudio.be/jgi/

Deactivating the plugin restores the menu to normal, but does not solve my IE8 compatibility issues.

http://wordpress.org/extend/plugins/ie-css3-support/