iewImg');
  let overflowNodePreviewImgData = null;
  let overflowNodeName = document.getElementById('overflowNodeName');
  let overflowNodeId = "";
  let overflowModal = document.getElementById("overflowModal");

  let jsonInputFile = document.getElementById('jsonInputFile');
  let currentSelection = null;
  let autolayoutAlignmentId = "alignmentTopLeft";
  let autolayoutAlignment = "topleft";
  let formatTab = "layout";

  window.onclick = function(event) {
    if (event.target == overflowModal) {
      ov