code: function(elem) {
  			var convert = function(value) {
  				return {thin: 1, medium: 3, thick: 5}[value] || value;
  			};
  			return [parseFloat(convert(elem.css('border-left-width'))),
  				parseFloat(convert(elem.css('border-top-width')))];
  		}
docs: Retrieve the size of left and top borders for an element.
  @memberof CalendarsPicker
  @private
  @param elem {jQuery} The element of interest.
  @return {number[]} The left and top borders.