function setTab(name, cursel, n) {
    for (i = 1; i <= n; i++) {
        var menu = document.getElementById(name + i);
        var con = document.getElementById("con_" + name + "_" + i);
        menu.className = i == cursel ? "hover" : "";
        con.style.display = i == cursel ? "block" : "none";
    }
}

function opensite(o) {
    win = window.open(o.href, "_blank");
    win.opener = "www.p5w.net";
    return false;
}

function isInnerAD(o) {
    var str = o.href;
    if (str.toLowerCase().indexOf(".p5w") < 0 && str.toLowerCase().indexOf(".cninfo") < 0 && str.toLowerCase().indexOf(".szse") < 0) {
        o.title = '敬请注意：此乃网络广告，广告商的言论与行为，均与全景网无关';
    }
}

function checkform() {
    var f = document.myform;
    if (TrimNull(f.user_name.value) == "") {
        alert("对不起，用户名的内容不能为空！");
        f.user_name.focus();
        return false;
    }

    if (TrimNull(f.use_pwd.value) == "") {
        alert("对不起，密码的内容不能为空！");
        f.use_pwd.focus();
        return false;
    }

    if (TrimNull(f.safecode.value) == "") {
        alert("对不起，验证码的内容不能为空！");
        f.safecode.focus();
        return false;
    }
    return true;

}

function checkdata(f) {
 if (TrimNull(f.username.value) == "") {
        alert("对不起，用户名的内容不能为空！");
        f.username.focus();
        return false;
    }

    if (TrimNull(f.password.value) == "") {
        alert("对不起，密码的内容不能为空！");
        f.password.focus();
        return false;
    }

    if (TrimNull(f.vcode.value) == "") {
        alert("对不起，验证码的内容不能为空！");
        f.vcode.vcode();
        return false;
    }
    return true;
}

function TrimNull(s) {
    var count = s.length;
    var st = 0;       // start
    var end = count - 1; // end

    if (s == "") return s;
    while (st < count) {
        if (s.charAt(st) == " ")
            st++;
        else
            break;
    }
    while (end > st) {
        if (s.charAt(end) == " ")
            end--;
        else
            break;
    }
    return s.substring(st, end + 1);
}

function tdate() {
    calendar = new Date();
    day = calendar.getDay();
    month = calendar.getMonth();
    date = calendar.getDate();
    year = calendar.getYear();
    month++;
    if (date < 10) date = "0" + date;
    if (month < 10) month = "0" + month;
    if (year <= 1000) year = 1900 + year;
    switch (day) {
        case 1: tweek = "星期一";
            break;
        case 2: tweek = "星期二";
            break;
        case 3: tweek = "星期三";
            break;
        case 4: tweek = "星期四";
            break
        case 5: tweek = "星期五";
            break;
        case 6: tweek = "星期六";
            break;
        case 0: tweek = "星期日";
            break;
    }
    document.write("　<b>" + month + "月" + date + "日　");
    document.write(tweek + "</b>　");
}