if (Array.prototype.indexOf === undefined) {
    $.extend(Array.prototype, (function () {
        function indexOf(item) {
            for (var i = 0; i < this.length; i++) {
                if (this[i] === item) {
                    return i;
                }
            }
            return -1;
        }

        return {
            indexOf: indexOf
        };
    })());
}

groupingRender: function(c, b) {
            return this.each(function() {
                var a = this, d = a.p.groupingView, e = "", g = "", j, m = "", n = [], q, k;
                if (!d.groupDataSorted) {
                    d.sortitems[0].sort();
                    d.sortnames[0].sort();
                    if (d.groupOrder[0].toLowerCase() == "desc") {
                        d.sortitems[0].reverse();
                        d.sortnames[0].reverse()
                    }
                }
                m = d.groupCollapse ? d.plusicon : d.minusicon;
                m += " tree-wrap-" + a.p.direction;
                for (k = 0; k < b; ) {
                    if (a.p.colModel[k].name == d.groupField[0]) {
                        q = k;
                        break
                    }
                    k++
                }
                f.each(d.sortitems[0], function(h, l) {
                    j = a.p.id + "ghead_" + h;
                    g = "<span style='cursor:pointer;' class='ui-icon " + m + "' onclick=\"jQuery('#" + a.p.id + "').jqGrid('groupingToggle','" + j + "');return false;\"></span>";
                    try {
                        n.push(d.groupText[0]);
                        jQuery(d.groupField).each(function(index, field) {
                            n.push($($('td', $(c[l][0].join()))[a.p.colNames.indexOf(field)]).text());
                        });
                    } catch (u) {
                        n = [d.groupText[0], d.sortnames[0][h]];
                    }
                    n.push(c[l].length);
                    e += '<tr id="' + j + '" role="row" class= "ui-widget-content jqgroup ui-row-' + a.p.direction + '"><td colspan="' + b + '">' + g + f.jgrid.format.apply(this, n) + "</td></tr>";
                    for (h = 0; h < c[l].length; h++)
                        e += c[l][h].join("");
                    if (d.groupSummary[0]) {
                        h = "";
                        if (d.groupCollapse && !d.showSummaryOnHide)
                            h = ' style="display:none;"';
                        e += "<tr" + h + ' role="row" class="ui-widget-content jqfoot ui-row-' + a.p.direction + '">';
                        h = d.summaryval[0][l];
                        for (var o = a.p.colModel, p, r = c[l].length, i = 0; i < b; i++) {
                            var s = "<td " +
                            a.formatCol(i, 1, "") + ">&#160;</td>", t = "{0}";
                            f.each(h, function() {
                                if (this.nm == o[i].name) {
                                    if (o[i].summaryTpl)
                                        t = o[i].summaryTpl;
                                    if (this.st == "avg")
                                        if (this.v && r > 0)
                                            this.v /= r;
                                    try {
                                        p = a.formatter("", this.v, i, this)
                                    } catch (v) {
                                        p = this.v
                                    }
                                    s = "<td " + a.formatCol(i, 1, "") + ">" + f.jgrid.format(t, p) + "</td>";
                                    return false
                                }
                            });
                            e += s
                        }
                        e += "</tr>"
                    }
                    n = [];
                });
                f("#" + a.p.id + " tbody:first").append(e);
                e = null;
            }