iframe.js

$(document).ready(function() {
        if(window.self !== window.top) {
          var padding = 200;
          var currentHeight = window.ApplicationHelpers.pageHeight() + padding;
          var resizeIframeTracker = setInterval(function() {
            $(document).ready(function() {
              var height = window.ApplicationHelpers.pageHeight() + padding;
              if(currentHeight !== height) {
                message = JSON.stringify({"frameHeight": height});
                window.parent.postMessage(message, "*");
                currentHeight = height;
              }
            });
          }, 200)
        }
      });