code: function(column) {
          if(YAHOO.lang.isString(column)) {
              var allColumns = this.flat;
              for(var i=allColumns.length-1; i>-1; i--) {
                  if(allColumns[i]._sId === column) {
                      return allColumns[i];
                  }
              }
          }
          return null;
      }
docs: Returns Column instance with given ID.
  
  @method getColumnById
  @param column {String} Column ID.
  @return {YAHOO.widget.Column} Column instance.