title: fancy box work with iframes in beforeShow function?
body: <p>Im trying to dynamically set some values of my Fancybox object based on information stored in tags inside of an iframe which fancy box is loading. the problem is, the only time i can seem to get the CORRECT values out of the content (iv tried virtually every callback combo possible) is on the afterShow method. this causes a jumpy transition of the width and height which are reset after it is shown. </p>
  
  <pre>
  $('.fancybox').fancybox({
              openEffect : 'elastic',
              closeEffect : 'elastic',
              autoSize:true,
              afterShow : function() {
                      var fancy = this;
                      var h = $('.fancybox-iframe').contents().find('html').height();
                      var w = $('.fancybox-iframe').contents().find('html').width();
                      fancy.width = w;
                      fancy.height = (h+50);
              }
          });
  </pre>
  
  <p>nothing outside of the afterShow method gives me correct results, even beforeShow(which is what I am going for). Is there any callback/jquery combo that can achieve this before showing the fancy box? Thanks!</p>