code: function dimensions(el, width, height) {
          var el_width = Embedo.utils.compute(el, 'width');
          width = width ?
            width :
            el_width > 0 ?
            el_width :
            Embedo.utils.compute(el.parentNode, 'width');
          height = height ?
            height :
            el_width > 0 ?
            el_width / 1.5 :
            Embedo.utils.compute(el.parentNode, 'height');
          return {
            width: width,
            height: height
          };
        }
docs: @function dimensions
  
  @param {HTMLElement} el
  @param {string} width
  @param {string} height
  
  @returns {object{width,height}}