title: Fancybox 2: auto resize the iFrame height for tabbed content
body: <p>I use Fancybox2 to open an iFrame popup window (content comes from the same website). Within this popup, I have tabbed content (Bootstrap tabs). Each tab has content of different heights. </p>
  
  <p>I am hoping that Fancybox can resize its height accordingly when I click tabs to see content on different heights. </p>
  
  <p>I tried different combinations of autoSiz, autoHeight, etc. Got no success. Googled, and it seems many people asked related questions.</p>
  
  <p>Am I missing something? Or is it doable? I feel this should be an easy configuration.</p>
  
  <p>Thanks!</p>