jQuery Grid Plugin - jqGrid

Treegrid is used to present product tree in cart.

If page is initially loaded, previous product group node should be selected in treegrid.

How to open certain node in treegrid if page is loaded ? Node id can be passed to page. How to force treegrid to open this node initially ?

Andrus

            $("#west-grid").jqGrid({
                url: '<%= ResolveUrl("~/Store/GridData")%>',
                datatype: "json",
                mtype: "POST",
                height: "auto",
                loadui: "disable",
                treeGridModel: "adjacency",
                colModel: [
                        { name: "id", width: 1, hidden: true, key: true },
                        { name: "menu" },
                        {name: "url", width: 1, hidden: true }
                    ],
                autowidth: true,
                treeGrid: true,
                ExpandColumn: "menu",
                rowNum: 200,
                ExpandColClick: true,
                treeIcons: { leaf: 'ui-icon-document-b' },

                onSelectRow: function (rowid) {
                    var treedata = $("#west-grid").jqGrid('getRowData', rowid);
                    if (treedata.isLeaf == "true") {
                        window.location = '<%= ResolveUrl("~/")%>' + treedata.url;
                    }
                }

            }
                    );