 (o) {
              o.className += o.record.get('classes')[o.column.key];
              return o.record.get(o.column.key + '_html');
          }
        },
          defaultFormatter = function (o) {
              o.className += o.record.get('classes')[o.column.key];
              return o.value;
          };

        function getColumns(theadNode) {
            var colNodes = theadNode.all('tr th'),
                cols = [],
                col;
            colNodes.each(function (colNode) {
            