Can Selenium or any other automated tool check for the proper positioning of elements on a web page?

For example, when you look at OnStartups.com in IE 6, the main content that is supposed to be to the right of the menu is below it instead and you have to scroll down to read it. Can you query and get the coordinates of the div as they are actually displayed, and can you get the coordinates of the viewport to verify that the top left corner is actually within the viewable area?