Hi everyone

I am trying to make something on my own to publish my drawings online... My webpage is "www.ideagrapher.com" I have few problems about getting things right... While I see the background as it should be on Chrome, IE shows me white background instead of my background-image. What am I doing wrong?

Second, I dont like how I placed the navigation buttons. When I visit my webpage with the 10' notebook, icons are jumping around and website looses it's symmetry. How can I accomplish viewing it the same on every screen size?

With my "0" knowledge of web design, I will appreciate for any kind of help.