$.extend($.fn.datagrid.defaults.editors, {

                numberbox: {

                    init: function (container, options) {

                        var input = $('<input type="text">').appendTo(container);

                        if (options && options.ratio) {

                            input.data("ratio", options.ratio);

                        }

                        return input.numberbox(options);;

                    },

                    destroy: function (target) {

                        $(target).numberbox('destroy');

                    },

                    getValue: function (target) {

                        var value = $(target).numberbox('getValue');

                        var ratio = $(target).data("ratio");

                        if (ratio) {

                            value = value*ratio;

                        }

                        return value;

                    },

                    setValue: function (target, value) {

                        var ratio = $(target).data("ratio");

                        if (ratio) {

                            value = value / ratio;

                        }

                        return $(target).numberbox('setValue',value);

                    },

                    resize: function (target, width) {

                        $(target).numberbox("resize", width);

                    }

                }

            });