         addEventListener(MouseEvent.MOUSE_DOWN, mouseUpDownMoveHandler);
         
         // Stop hover highlighting on rows underneath the editor.
-        addEventListener(MouseEvent.MOUSE_MOVE, mouseUpDownMoveHandler);
+        addEventListener(MouseEvent.MOUSE_MOVE, mouseMoveHandler);
     }
     
     /**

        clearErrorStringFromContainer(this);
        removeEventListener(MouseEvent.MOUSE_UP, mouseUpDownMoveHandler);
        removeEventListener(MouseEvent.MOUSE_DOWN, mouseUpDownMoveHandler);
        removeEventListener(MouseEvent.MOUSE_MOVE, mouseUpDownMoveHandler);
    }
    
    /**

import spark.components.gridClasses.GridColumn;
import spark.components.DataGrid;
import spark.components.Group;
import flash.geom.Point;

use namespace mx_internal;

