code: function getPixelHeight(element) {
  
          var heightString = getStyleOrAttrib(element, 'height');
  
          var heightNumber = parseInt(heightString, 10);
  
          if (isPercentageBasedSize(heightString)) {
            heightNumber = 0;
          }
  
          return !isNaN(heightNumber) && heightNumber > 0 ?
            heightNumber : getComputedStyleSize(element, 'height');
        }
docs: Attempt to get the pixel height from a cell.