title: Putting jQuery popup window in the center of page always?
body: <p>I got this code that allows a nice pop up window when clicked on a particular image. This brings out a larger image for a gallery I made. However for some reason I can't get it to appear at the center of the user's window, as all the images are different sizes, they move depending on the image shown.</p>
  
  <p>The link is at:</p>
  
  <p><a href="http://zeendesign.co.uk/cherrieimogen/cherrieimogen/cherrieImogen/portfolio.html" rel="nofollow">http://zeendesign.co.uk/cherrieimogen/cherrieimogen/cherrieImogen/portfolio.html</a></p>
  
  <p>(the css is called reveal.css)</p>
  
  <p>Any help would be greatly appreciated. Thank you!</p>