function hiddenLayer() {
document.getElementById("descr").style.display = "none";
}

function showLayer() {
document.getElementById("descr").style.display = "block";
}

function hiddenLayer2() {
document.getElementById("descr2").style.display = "none";
}

function showLayer2() {
document.getElementById("descr2").style.display = "block";
}

function hiddenLayer3() {
document.getElementById("descr3").style.display = "none";
}

function showLayer3() {
document.getElementById("descr3").style.display = "block";
}

function hiddenLayer4() {
document.getElementById("descr4").style.display = "none";
}

function showLayer4() {
document.getElementById("descr4").style.display = "block";
}

function hiddenLayer5() {
document.getElementById("descr5").style.display = "none";
}

function showLayer5() {
document.getElementById("descr5").style.display = "block";
}

function hiddenLayer6() {
document.getElementById("descr6").style.display = "none";
}

function showLayer6() {
document.getElementById("descr6").style.display = "block";
}

function hiddenLayer7() {
document.getElementById("descr7").style.display = "none";
}

function showLayer7() {
document.getElementById("descr7").style.display = "block";
}