title: Use a UITabBar without UITabBarController to control a UIWebView
body: <p>I want to use a <code>UITabBar</code> to let the user navigate a single <code>UIWebView</code>. Is this possible or would I be better off using a <code>UIToolbar</code>? If better off using a <code>UIToolbar</code>, how would I simulate the "selected" visual state of a button, the way <code>UITabBar</code> natively does?</p>