function hideAll() {
document.getElementById('content1').style.display = "none";
document.getElementById('content2').style.display = "none";
document.getElementById('content3').style.display = "none";
document.getElementById('content4').style.display = "none";
document.getElementById('content5').style.display = "none";
document.getElementById('content6').style.display = "none";
document.getElementById('content7').style.display = "none";
document.getElementById('content8').style.display = "none";
document.getElementById('content9').style.display = "none";
document.getElementById('content10').style.display = "none";
document.getElementById('content11').style.display = "none";
document.getElementById('content12').style.display = "none";
document.getElementById('content13').style.display = "none";
document.getElementById('content14').style.display = "none";
document.getElementById('content15').style.display = "none";
document.getElementById('content16').style.display = "none";
document.getElementById('content17').style.display = "none";
document.getElementById('content18').style.display = "none";
document.getElementById('content19').style.display = "none";
document.getElementById('content20').style.display = "none";
document.getElementById('content21').style.display = "none";
document.getElementById('content22').style.display = "none";
document.getElementById('content23').style.display = "none";
document.getElementById('content24').style.display = "none";
document.getElementById('content25').style.display = "none";
document.getElementById('content26').style.display = "none";
document.getElementById('content27').style.display = "none";
}

function div1() {
hideAll();
document.getElementById('content1').style.display = "";
}

function div2() {
hideAll();
document.getElementById('content2').style.display = "";
}

function div3() {
hideAll();
document.getElementById('content3').style.display = "";
}

function div4() {
hideAll();
document.getElementById('content4').style.display = "";
}

function div5() {
hideAll();
document.getElementById('content5').style.display = "";
}

function div6() {
hideAll();
document.getElementById('content6').style.display = "";
}

function div7() {
hideAll();
document.getElementById('content7').style.display = "";
}

function div8() {
hideAll();
document.getElementById('content8').style.display = "";
}

function div9() {
hideAll();
document.getElementById('content9').style.display = "";
}

function div10() {
hideAll();
document.getElementById('content10').style.display = "";
}

function div11() {
hideAll();
document.getElementById('content11').style.display = "";
}

function div12() {
hideAll();
document.getElementById('content12').style.display = "";
}

function div13() {
hideAll();
document.getElementById('content13').style.display = "";
}

function div14() {
hideAll();
document.getElementById('content14').style.display = "";
}

function div15() {
hideAll();
document.getElementById('content15').style.display = "";
}

function div16() {
hideAll();
document.getElementById('content16').style.display = "";
}

function div17() {
hideAll();
document.getElementById('content17').style.display = "";
}

function div18() {
hideAll();
document.getElementById('content18').style.display = "";
}

function div19() {
hideAll();
document.getElementById('content19').style.display = "";
}

function div20() {
hideAll();
document.getElementById('content20').style.display = "";
}

function div21() {
hideAll();
document.getElementById('content21').style.display = "";
}

function div22() {
hideAll();
document.getElementById('content22').style.display = "";
}

function div23() {
hideAll();
document.getElementById('content23').style.display = "";
}

function div24() {
hideAll();
document.getElementById('content24').style.display = "";
}

function div25() {
hideAll();
document.getElementById('content25').style.display = "";
}

function div26() {
hideAll();
document.getElementById('content26').style.display = "";
}

function div27() {
hideAll();
document.getElementById('content27').style.display = "";
}