function show01() {
document.getElementById("ry").className = "s01";
document.getElementById("yq").className = "s02";
document.getElementById("sp01").style.display = "block";
document.getElementById("sp02").style.display = "none";
}
function show02() {
document.getElementById("ry").className = "s02";
document.getElementById("yq").className = "s01";
document.getElementById("sp02").style.display = "block";
document.getElementById("sp01").style.display = "none";
}