[Plugin: Transposh WordPress Translation] Drop-down Widget items not accessible

I have just installed Transposh on my site http://www.ikankayak.com/ but when I go to the site after installing the widget the dropdown box in the menu bar shows behind all of the images/text on the site and is not clickable? Is there a solution to this?

Kind Regards

http://wordpress.org/extend/plugins/transposh-translation-filter-for-wordpress/