title: Using bootbox the show event is not fired
body: <p>I'm not able to catch the show event for the bootbox.confirm dialog in order to do some css adjustments to the dialog before showing it.</p>
  
  <p>I tried things like the followings but didn't succeed:</p>
  
  <pre><code>$(document).on("show.bs.modal", function (event) {...});
  $(document).on("show", function (event) {...});
  $(document).on("show", ".bootbox", function (event) {...});
  </code></pre>