title: How can I make a jQuery UI Dialog Modal during the show-effect?
body: <p>I have a jQuery UI Dialog, it is Modal and shows with a Bounce effect. I use a Theme where the background is dimmed with a striped image.
  The first time the Dialog is opened, the striped background also covers the dialog during the bounce effect. Once the bounce effect has finished, the dialog becomes modal and appears in front of the striped background.
  On the next opening, the dialog bounces in front of the background right away.</p>
  
  <p>How can I make the dialog appear in front of the background right away?</p>