I am the owner of a website (forum). I had a company to make the design (purchased the design). I have noticed the following problem:

When I browse it using Internet Explorer, it looks 'ok'. However, when I open it up using Mozilla it doesn't look correctly 'calibrated'. The image location and size is not correctly connected. I can provide the link if its ok.

Who can tell me what are the possible reasoning behind this?

ps: sorry for my english, I am not English :P