IT61/it61-rails

function fileReaderSupported() {
  return window.File && window.FileReader && window.FileList && window.Blob;
}

function showImageOnLoad($imageInput, $image, onLoadCallback) {
  if (!$imageInput) {
    return;
  }

  $imageInput.onchange = function () {
    var reader = new FileReader();
    reader.onload = function (e) {
      $image.attr('src', e.target.result);
      if (onLoadCallback)
        onLoadCallback();
    };
    if (this.files.length !== 0) {
      reader.readAsDataURL(this.files[0]);
    }
  };
}