// JavaScript Document
function bd1() {
document.getElementById("ts").className="ts1";
document.getElementById("bd1").style.display="block";
document.getElementById("bd2").style.display="none";
document.getElementById("bd3").style.display="none";
}

function bd2() {
document.getElementById("ts").className="ts2";
document.getElementById("bd2").style.display="block";
document.getElementById("bd3").style.display="none";
document.getElementById("bd1").style.display="none";
}

function bd3() {
document.getElementById("ts").className="ts3";
document.getElementById("bd3").style.display="block";
document.getElementById("bd1").style.display="none";
document.getElementById("bd2").style.display="none";
}