The thing is, if your visitor wants to open a page and stay there so they can read and come back to it without having to keep their mouse over the nav item, they may get frustrated. I think it would be far better to have each link open a new page within the site so people can come and go as they please.
For example, http://www.iconeden.com/contact/about . You don't have to keep your mouse over the links to view the content.