Foogallery image – description / 60 – 40%

Hi try to explain my question clearly, i try to insert foogallery where every image has relative much description, the problem:

i search for a solution where after click the image the (foo)box opens and the image is left and the description right, but the discription should NOT cover partly the image.
So i guess a (Foo-, Light, …)box as width as the content of website, the image width 60% and the description 40% width of the box….

Please help