My iframe won't fit in Facebook

I am making a basic website to use as an iframe on facebook, but for some reason my page won't fit. Despite its 510pixel width, facebook cuts it off and and adds a vertic开发者_Go百科al scroll bar. Here is what it should look like: http://missinglinksocialmedia.com/thecody/codyfeature.html. Here is what facebook turns it into: http://www.facebook.com/pages/Your-Business/158309827551078?sk=app_218960891469608

Probably because of spacing between the pictures. Try it with a few pixels less.