加入收藏与设为首页的常用代码

function addfavorite() {
    var url = window.location.href;
    var tname = document.title
    if (document.all) {
        try {
            window.external.addFavorite(url, tname);
        } catch (e) {
            try {
                window.sidebar.addPanel(tname, url, "");
            } catch (e) {
                alert("请使用Ctrl+D键收藏本页");
            }
        }
    } else if (window.sidebar) {
        alert("请使用Ctrl+D键收藏本页");
    }
}
function setHomepage() {
    var url = window.location.href;
    if (document.all) {
        document.body.style.behavior = 'url(#default#homepage)';
        document.body.setHomePage(url);
    }
    else if (window.sidebar) {
        if (window.netscape) {
            try {
                netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
            }
            catch (e) {
                alert("设为首页操作被浏览器拒绝，如果想启用设为首页功能，请选择信任此代码");
            }
        }
        var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);
        prefs.setCharPref('browser.startup.homepage', url);
    }
}