function xianshi() {
    var abc = document.getElementById("erji");
    abc.style.display = "block";


}
function buxianshi() {
    var abc = document.getElementById("erji");
    abc.style.display = "none";


}
function xianshi1() {
    var abc = document.getElementById("erji3");
    abc.style.display = "block";


}
function buxianshi1() {
    var abc = document.getElementById("erji3");
    abc.style.display = "none";
}
function xianshi2() {
    var abc = document.getElementById("Ul1");
    abc.style.display = "block";


}
function buxianshi2() {
    var abc = document.getElementById("Ul1");
    abc.style.display = "none";
}
function xianshi3() {
    var abc = document.getElementById("Ul2");
    abc.style.display = "block";


}
function buxianshi3() {
    var abc = document.getElementById("Ul2");
    abc.style.display = "none";
}
function xianshi4() {
    var abc = document.getElementById("Ul3");
    abc.style.display = "block";


}
function buxianshi4() {
    var abc = document.getElementById("Ul3");
    abc.style.display = "none";
}
function xianshi5() {
    var abc = document.getElementById("erji4");
    abc.style.display = "block";


}
function buxianshi5() {
    var abc = document.getElementById("erji4");
    abc.style.display = "none";
}