I am trying to figure out how Apple makes their menus slide over each other on most of their pages. For example, in the support tab, you see "Latest in Support: Popular Discussions, Popular How-To's, Top Searches" As you hover over each section the menu slides out of the way to show you the sub menu. How is this done? I think it is CSS but I cant figure out what is causing it to work. If anyone can lead me to a tutorial or even tell me what the command is called, I would really appreciate it.