function findTechLayout(city) {
                for (var k in city) {
                    //console.log(typeof(city[k]), "1.city[", k, "]", city[k])
                    if ((typeof (city[k]) == "object") && city[k] && 0 in city[k] && 8 in city[k]) {
                        if ((typeof (city[k][0]) == "object") && city[k][0] && city[k][0] && 0 in city[k][0] && 15 in city[k][0]) {
                            if ((typeof (city[k][0][0]) == "object") && city[k][0][0] && "BuildingIndex" in city[k][0][0]) {
                                return city[k];
                            }
                        }
                    }
                }
                return null;
            }