Mobil site cropping weirdly

http://www.playbackrecordreinforce.net/portfolio/shows/trumpery/

I’m using the Twenty Eleven 1.2 theme and the oQey image slide show plugin. On my side on a computer it looks fine but when I view my site on my iPhone the width of the page is half the screen size and the image gallery is the full width of the screen. The page width is also only half its size when there isn’t an image gallery.

Any help would be great.