code: function() {
      // Keep track of selected rows
      var allSelectedRows = this.getSelectedRows();
      // Keep track of selected cells
      var allSelectedCells = this.getSelectedCells();
      // Anything to select?
      if((allSelectedRows.length>0) || (allSelectedCells.length > 0)) {
          var oColumnSet = this._oColumnSet,
              el;
          // Loop over each row
          for(var i=0; i<allSelectedRows.length; i++) {
              el = Dom.get(allSelectedRows[i]);
              if(el) {
                  Dom.addClass(el, DT.CLASS_SELECTED);
              }
          }
          // Loop over each cell
          for(i=0; i<allSelectedCells.length; i++) {
              el = Dom.get(allSelectedCells[i].recordId);
              if(el) {
                  Dom.addClass(el.childNodes[oColumnSet.getColumn(allSelectedCells[i].columnKey).getKeyIndex()], DT.CLASS_SELECTED);
              }
          }
      }       
  }
docs: Assigns the class DT.CLASS_SELECTED to TR and TD elements.
  
  @method _setSelections
  @private