function trim(str) {
    return str.replace(/\s+/g, "").replace(/\u3000/g, ""); //(全角空格符号是\u3000)
}

function selectCheckBox(sender, name) {
    var jSender = $(sender);
    var jCheckBoxes = $("input:checkbox[name='" + name + "']");
    if (jSender.attr("checked"))
        jCheckBoxes.attr("checked", "checked");
    else
        jCheckBoxes.removeAttr("checked");

}

function addFav() {   // 加入收藏夹
    if (document.all) {
        window.external.addFavorite(window.location.href, document.title);
    } else if (window.sidebar) {
        window.sidebar.addPanel(document.title, window.location.href, "");
    }
}

function setHomepage() {   // 设置首页
    if (document.all) {
        document.body.style.behavior = 'url(#default#homepage)';
        document.body.setHomePage(window.location.href);
    } else if (window.sidebar) {
        if (window.netscape) {
            try {
                netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
            } catch (e) {
                alert("该操作被浏览器拒绝，如果想启用该功能，请在地址栏内输入 about:config,然后将项 signed.applets.codebase_principal_support 值该为true");
            }
        }
        var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);
        prefs.setCharPref('browser.startup.homepage', window.location.href);
    }
}

function IsInstall(id) {
    try {//支持
        var xmlhttp = new ActiveXObject("IMInteface.UstcOriWebLab");
        window.navigate('Bedoing://susu?im=' + id);  //打开客户端
    } catch (e) {//不支持   
        alert("您未安装客户端程序！");
        return false;
    }
    return false;
}