I came across this: http://idevrecipes.com/2010/12/16/raised-center-tab-bar-button/, but I don't really know how to implement it into my app.
I have the UITabBarController as my app delegate, but I don't know how I can add a raised button item like in the link.
In my .xib file, I have the tabBarController set up with three tabBarItems. I would like to have the middle one raised, but I am not sure how to do that.