title: iPhone - Create a semi transparent rectangle with opaque text
body: <p>I have a MapView and I want to display a black semi transparent rectangle on top with a text inside. Not over the entire map only on section of it (maybe on the top corner) just as an info box (like the one in the iPod player that appears on double tap and displays the Mute and skip buttons).</p>
  
  <p>I tried google but I'm not getting any clear answers. How is the best way to accomplish this?</p>
  
  <p>Thanks in advance</p>