设为首页和收藏代码自动适用IE 其他浏览器弹出提示手动操作

<a href="javascript:;" onclick="setHomepage('http://www.webape.net');">
    设为首页
</a>
<a
    href="http://www.webape.net"
    onclick="addFavorite(this.href, '网猿建站');return false;"
>
    收藏本站
</a>

<script>
    function browserVersion(types) {
        var other = 1;
        for (i in types) {
            var v = types[i] ? types[i] : i;
            if (USERAGENT.indexOf(v) != -1) {
                var re = new RegExp(v + "(\\/|\\s|:)([\\d\\.]+)", "ig");
                var matches = re.exec(USERAGENT);
                var ver = matches != null ? matches[2] : 0;
                other = ver !== 0 && v != "mozilla" ? 0 : other;
            } else {
                var ver = 0;
            }
            eval("BROWSER." + i + "= ver");
        }
        BROWSER.other = other;
    }
    var BROWSER = {};
    var USERAGENT = navigator.userAgent.toLowerCase();
    browserVersion({
        ie: "msie",
        firefox: "",
        chrome: "",
        opera: "",
        safari: "",
        mozilla: "",
        webkit: "",
        maxthon: "",
        qq: "qqbrowser",
        rv: "rv",
    });
    if (BROWSER.safari || BROWSER.rv) {
        BROWSER.firefox = true;
    }
    BROWSER.opera = BROWSER.opera ? opera.version() : 0;
    function setHomepage(sURL) {
        if (BROWSER.ie) {
            document.body.style.behavior = "url(#default#homepage)";
            document.body.setHomePage(sURL);
        } else {
            alert("非 IE 浏览器请手动将本站设为首页", "notice");
        }
    }
    function addFavorite(url, title) {
        try {
            window.external.addFavorite(url, title);
        } catch (e) {
            try {
                window.sidebar.addPanel(title, url, "");
            } catch (e) {
                alert("请按 Ctrl+D 键添加到收藏夹");
            }
        }
    }
</script>