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 = 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;
}  

function bookmark_title(a,title){
	var url = window.document.location;
	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 = 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;
}  

function checkEmail(email){
	var return_value = true;
	var error_msg = "Введите корректно E-Mail";
	var reg_mail = /^([a-z0-9_\-]+\.)*[a-z0-9_\-]+@([a-z0-9][a-z0-9\-]*[a-z0-9]\.)+[a-z]{2,4}$/i;
//	var reg_mail = /[0-9a-z_]+@[0-9a-z_^.]+.[a-z]{2,3}/i;

	if(reg_mail.exec(email) == null) return_value = false;

	if(!return_value) alert(error_msg);
	return return_value;
}