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' && 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;
}