title: Is there anyway to have jquery BlockUI vertically center on the screen
body: <p>I am using <a href="http://malsup.com/jquery/block/" rel="noreferrer">jquery blockui</a> but the div that is being covered is very long, so the loading message shows up off the screen. </p>
  
  <p>Is there anyway to have jquery blockui loading message vertically center on the visible screen so people can see the message without scrolling down ?</p>