function extensionnavs(id) {
    for (var i = 1; i < 7; i++) {
        var v = document.getElementById("extensionnav" + i);
        if (id != v) {
            v.className = "nav2";
            v.style.color = "White";
        } else {
            v.className = "nav1";
            v.style.color = "d40101";
        }
    }
}
function topnavs(id) {
    for (var i = 1; i < 11; i++) {
        var v = document.getElementById("topnav" + i);
        if (id != v) {
            v.className = "navmain1";
            v.style.color = "Black";
        } else {
            v.className = "navmain2";
            v.style.color = "White";
        }
    }
}
function tion(id) {
    for (var i = 1; i < 10; i++) {
        var v = document.getElementById("xueke" + i);
        if (id != v) {
            v.style.backgroundColor = "White";
            v.style.color = "Gray";
        } else {
            v.style.backgroundColor = "red";
            v.style.color = "White";
        }
    }
}
function ji(id) {
    for (var i = 1; i < 4; i++) {
        var v = document.getElementById("nianji" + i);
        if (id != v) {
            v.style.backgroundColor = "White";
            v.style.color = "Gray";
        } else {
            v.style.backgroundColor = "red";
            v.style.color = "White";
        }
    }
}
function ban(id) {
    for (var i = 1; i < 3; i++) {
        var v = document.getElementById("banben" + i);
        if (id != v) {
            v.style.backgroundColor = "White";
            v.style.color = "Gray";
        } else {
            v.style.backgroundColor = "red";
            v.style.color = "White";
        }
    }
}
function sheng(id) {
    for (var i = 1; i < 31; i++) {
        var v = document.getElementById("shengfen" + i);
        if (id != v) {
            v.style.backgroundColor = "White";
            v.style.color = "Gray";
        } else {
            v.style.backgroundColor = "red";
            v.style.color = "White";
        }
    }
}