var _pc_resizeIFrame = function(iframe) {
  iframe.height = iframe.contentDocument.body.scrollHeight;
}

document.querySelectorAll(".pc-iframe").forEach(function(iframe) {
  window.onload = function () {
    _pc_resizeIFrame(iframe);
  };
  window.onresize = function () {
    _pc_resizeIFrame(iframe);
  };
});