code: function(el, oRecord, oColumn, oData) {
          var value = (lang.isValue(oData)) ? oData : "",
              markup = "<textarea>" + value + "</textarea>";
          el.innerHTML = markup;
      }
docs: Formats TEXTAREA elements.
  
  @method DataTable.formatTextarea
  @param el {HTMLElement} The element to format with markup.
  @param oRecord {YAHOO.widget.Record} Record instance.
  @param oColumn {YAHOO.widget.Column} Column instance.
  @param oData {Object} (Optional) Data value for the cell.
  @static