var TopLevel = {
  "offsetX": function() {},
  "offsetY": function() {},
  "nativeEvent": function() {},
  "target": function() {},
  "dataTransfer": function() {},
  "dropEffect": function() {},
  "value": function() {},
  "offsetHeight": function() {},
  "offsetWidth": function() {},
  "scrollTop": function() {},
  "scrollLeft": function() {},
  "refs": function() {},
  "ctrlKey": function() {},
  "shiftKey": function() {},
  "keyCode": function() {},
  "currentTarget": function() {},
  "createObjectURL": function() {},
  "URL": function() {},
  "innerHTML": function() {},
  "getElementById": function() {},
  "clientX": function() {},
  "clientY": function() {},
  "href": function() {},
  "value": function() {},
  "identifier": function() {},
  "getBoundingClientRect": function() {},
  "getBBox": function() {},
  "addEventListener": function() {},
  "postMessage": function() {},
  "data": function() {}
};
