function showWeek() {
    var now = new Date();
    var a = now.getYear();
    var b = now.getMonth() + 1;
    var c = now.getDate();
    var getYearWeek = function() {
        var date1 = new Date(a, parseInt(b) - 1, c),
        date2 = new Date(a, 0, 1),
        d = Math.round((date1.valueOf() - date2.valueOf()) / 86400000);
        return Math.ceil((d + ((date2.getDay() + 1) - 1)) / 7)
    };
    document.write(a + " 年第 " + getYearWeek() + " 周")
}
function scrollDoor(menus, divs, current, notCurrent, show, hide) {
    for (var i = 0; i < menus.length; i++) {
        document.getElementById(menus[i]).value = i;
        document.getElementById(menus[i]).onmouseover = function() {
            for (var j = 0; j < menus.length; j++) {
                document.getElementById(menus[j]).className = notCurrent;
                document.getElementById(divs[j]).className = hide
            }
            document.getElementById(menus[this.value]).className = current;
            document.getElementById(divs[this.value]).className = show
        }
    }
}
window.onload = function() {
    scrollDoor(["b1", "b2", "b3", "b4", "b5", "b6"], ["d1", "d2", "d3", "d4", "d5", "d6"], "current", "", "show2", "hide")
}