function getBrowserInfo() {
	var t,v = undefined;
	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' && 7 > 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;
}