function getBrowserInfo() {

    var t,v = undefined;

    

    if (window.chrome) t = 'Chrome';

    else if (window.opera) t = 'Opera';

    else if (document.all) {

        t = 'IE';

        var nv = navigator.appVersion;

        var s = nv.indexOf('MSIE')+5;

        v = nv.substring(s,s+1);

    } 

    else if (navigator.appName) t = 'Netscape';

    

    return {type:t,version:v};

}



function bookmark(a){

    var url = window.document.location;

    var title = window.document.title;

    var b = getBrowserInfo();

    

    if (b.type == 'IE' && 8 >= b.version && b.version >= 4) window.external.AddFavorite(url,title);

    else if (b.type == 'Opera') {

        a.href = url;

        a.rel = "sidebar";

        a.title = url+','+title;

        return true;

    }

    else if (b.type == "Netscape") window.sidebar.addPanel(title,url,"");

    else alert("Нажмите CTRL-D, чтобы добавить страницу в закладки.");

    return false;

}