mindplot.nlayout.GridSorter = new Class({
    Extends: mindplot.nlayout.SymetricSorder,

    toString:function() {
        return "Grid Sorter";
    }

});

mindplot.nlayout.GridSorter.GRID_HORIZONTAR_SIZE = 50;
mindplot.nlayout.GridSorter.INTER_NODE_VERTICAL_DISTANCE = 50;