// JavaScript Document

function tab1() {
document.getElementById("tabdiv").className="tabdiv";
document.getElementById("tab1").style.display="block";
document.getElementById("tab2").style.display="none";
}

function tab2() {
document.getElementById("tabdiv").className="tabdiv2";
document.getElementById("tab2").style.display="block";
document.getElementById("tab1").style.display="none";
}

function tab3() {
document.getElementById("tabdiv2").className="tabdiv_2";
document.getElementById("imgdiv1").style.display="block";
document.getElementById("imgdiv2").style.display="none";
document.getElementById("imgurl1").style.display="block";
document.getElementById("imgurl2").style.display="none";
}

function tab4() {
document.getElementById("tabdiv2").className="tabdiv_2_2";
document.getElementById("imgdiv2").style.display="block";
document.getElementById("imgdiv1").style.display="none";
document.getElementById("imgurl2").style.display="block";
document.getElementById("imgurl1").style.display="none";
}

function tab1_en() {
document.getElementById("tabdiv_en").className="tabdiv_en";
document.getElementById("tab1").style.display="block";
document.getElementById("tab2").style.display="none";
}

function tab2_en() {
document.getElementById("tabdiv_en").className="tabdiv2_en";
document.getElementById("tab2").style.display="block";
document.getElementById("tab1").style.display="none";
}