Calculate equal height based on content

equalizer.js

function heightEqualizer($row) {
  var $columns = $row.find('> *');

  function calculateHeight($el) {
    var height = 0;

    $el.each(function() {
      var heightVal = $(this).css('height');

      $(this).css('height', '');

      height = height + $(this).outerHeight(true);

      $(this).css('height', heightVal);
    });

    return height;
  }

  function calculateMaxHeight($elems) {
    var maxHeight = 0;

    $elems.each(function() {
      var currentHeight = calculateHeight($(this));

      if (currentHeight > maxHeight) {
        maxHeight = currentHeight;
      }
    });

    return maxHeight;
  }

  function setMaxHeight($elems) {
    $elems.css('height', calculateMaxHeight($elems) + 'px');
  }

  setMaxHeight($columns);

  if ($row.find('img').length) {
    var imgLoaded = 0;

    $row.find('img').each(function() {
      $(this).on('load', function() {
        imgLoaded++

        if (imgLoaded === $row.find('img').length) {
          setMaxHeight($columns);
        }
      });
    });
  }
}