{
const btns = d3.select(vizContainer).select("#controls");
btns.select("#btn-one-on").on("click", () => {layerToggleOnOff("urban"); buttonToggleOnOff("btn-one-on")});
btns.select("#btn-one-off").on("click", () => layerOff("urban"));
btns.select("#btn-two-on").on("click", () => layerOn("sub"));
btns.select("#btn-two-off").on("click", () => layerOff("sub"));
btns.select("#btn-four-on").on("click", () => layerOn("st"));
btns.select("#btn-four-off").on("click", () => layerOff("st"));
btns.select("#btn-three-on").on("click", () => layerOn("rural"));
btns.select("#btn-three-off").on("click", () => layerOff("rural"));
btns.select("#btn-five-on").on("click", () => layerOn("single"));
btns.select("#btn-five-off").on("click", () => layerOff("single"));
btns.select("#btn-six-on").on("click", () => layerOn("married"));
btns.select("#btn-six-off").on("click", () => layerOff("married"));
btns.select("#btn-seven-on").on("click", () => layerOn("divorced"));
btns.select("#btn-seven-off").on("click", () => layerOff("divorced"));
btns.select("#btn-eight-on").on("click", () => layerOn("widowed"));
btns.select("#btn-eight-off").on("click", () => layerOff("widowed"));
btns.select("#btn-nine-on").on("click", () => layerOn("twe"));
btns.select("#btn-nine-off").on("click", () => layerOff("twe"));
btns.select("#btn-ten-on").on("click", () => layerOn("thir"));
btns.select("#btn-ten-off").on("click", () => layerOff("thir"));
btns.select("#btn-eleven-on").on("click", () => layerOn("four"));
btns.select("#btn-eleven-off").on("click", () => layerOff("four"));
btns.select("#btn-twelve-on").on("click", () => layerOn("fift"));
btns.select("#btn-twelve-off").on("click", () => layerOff("fift"));
btns.select("#btn-thirteen-on").on("click", () => layerOn("six"));
btns.select("#btn-thirteen-off").on("click", () => layerOff("six"));
btns.select("#btn-fourteen-on").on("click", () => layerOn("male"));
btns.select("#btn-fourteen-off").on("click", () => layerOff("male"));
btns.select("#btn-fifteen-on").on("click", () => layerOn("female"));
btns.select("#btn-fifteen-off").on("click", () => layerOff("female"));
btns.select("#btn-sixteen-on").on("click", () => layerOn("nb"));
btns.select("#btn-sixteen-off").on("click", () => layerOff("nb"));
btns.select("#btn-seventeen-on").on("click", () => layerOn("Info"));
btns.select("#btn-seventeen-off").on("click", () => layerOff("Info"));
btns.select("#btn-allOn1").on("click", () => layerGroupToggleOnOff(["urban","sub","st","rural"]));
btns.select("#btn-allOff1").on("click", () => layerOff("urban","sub","st","rural"));
btns.select("#btn-allOn2").on("click", () => layerOn("single","married","divorced","widowed"));
btns.select("#btn-allOff2").on("click", () => layerOff("single","married","divorced","widowed"));
btns.select("#btn-allOn3").on("click", () => layerOn("twe","thir","four","fift","six"));
btns.select("#btn-allOff3").on("click", () => layerOff("twe", "thir", "four", "fift", "six"));
btns.select("#btn-allOn4").on("click", () => layerOn("male", "female", "nb"));
btns.select("#btn-allOff4").on("click", () => layerOff("male", "female", "nb"));
btns.select("#btn-allOn").on("click", allOn);
btns.select("#btn-allOff").on("click", allOff);
}