code: function(workingDate, cell) {
          Dom.addClass(cell, this.Style.CSS_CELL_OOB);
          cell.innerHTML = workingDate.getDate();
          return Calendar.STOP_RENDER;
      }
docs: BEGIN BUILT-IN TABLE CELL RENDERERS 
  Renders a cell that falls before the minimum date or after the maximum date.
  widget class.
  @method renderOutOfBoundsDate
  @param {Date}     workingDate  The current working Date object being used to generate the calendar
  @param {HTMLTableCellElement} cell   The current working cell in the calendar
  @return {String} YAHOO.widget.Calendar.STOP_RENDER if rendering should stop with this style, null or nothing if rendering
  should not be terminated